Ecc81 Vs Ecc83

No doubt, but less so. However, its performance is similar or better than usual regenerative receiver. If you want the best of the best in smooth rich tone these will do it. AnalogMetric. ECC81 Telefunken / RFT (NOS) ECC81 Telefunken, original boxed no diamond logo in the glas bottom / made in Eastern Germany by RFT   Telefunken used tubes from the RFT… To be able to use Tube Amp Doctor Onlineshop in full range, we recommend activating Javascript in your browser. Tube Testing Equipment. Occasionally you will find an ECC82 or ECC81 used as a pre-amplifying valve. In this case I wanted to know how a modern tube would perform in terms of sound quality against an old Telefunken ECC83. Gold Lion ECC83 delivers a full sonic range with excellent articulation. One of our most popular amps, the Mojotone Deluxe Reverb Style Kit, is based on arguably the most widely used guitar amp of all time. more valve design: 2 x ECC83(12AX7) preamp valves. Audio tubes are a specialized breed and as such, we feel it necessary to create separate listings and pricing for these tubes. they seem readily available at descent prices even for NOS valves. TDA1514A, ECC83 100R,2x180R, 2x68R. MULLARD 12AX7 ECC83 VACUUM TUBE 1959 MATCH PAIR WARM SWEET ENGLISH BEER PUB F92. Aber sie ist NICHT pinkompatibel, sprich sie ist anders beschaltet. It's high gain makes it popular in guitar amps, though it's also widely used in HiFi amps, especially in phono stages. pre amp 3 ECC83 1 ECC81 output 2 EL34 Rectification 3 BY 127 37"H, 27"W, 16"D. Last updated: 18-Jan-2018 21:32. Anyone have any experiments with those tubes? All info. Reject limits have to be guessed by people who know how to do this. But others like them. 12AU7 is the American designation and CV4003 is the British designation. Power Amp: 2 x EL34 - Unboxed Dimensions (W x H x D): 21. By auralflea, January 27, 2007 in 2 Channel. Plug and play. Good for phase inverters or reverb drivers. I cannot decipher what cables are used inside. 06 kg (17. The Ultimate 12AX7 enhanced with Gold Pins. ECC83 vs 12Ax7 Tubes – What is the Difference? One of the more confusing things about tube amps is changing them, especially when there seem to be so many different kinds available. A Friend of mine has come across some ECC81, 2 and 4. ★★送料無料★★ 親切な真空管ヘルプデスク 無料相談 0120·194·380 プレミアムクラス 最高グレード 極上の真空管サウンドを求める方にお薦め·全数検査、210日間保証、72時間エージング 商品について ·新品 現行真空管 完動品。. com 2 Triode 2A3B (2A3) 2A3C (2A3) 300B-98 (300B) 300BA (300B) 300BS-B (300B) 211. Be sure to look for reviews by our customers and the Top Seller marker if you need help deciding which to order. Ecc81 Vs Ecc83 In vintage Marshalls into V1 in general (for me). Last updated: 18-Jan-2018 21:32. VIVA TUBES Vintage NOS & Used Vacuum Tubes. the shop that I bought to said that there was a mistake on giving me the price, the price they gave me was for the ecc83 (what he told on the phone was ecc83s that douchebag ) and the price is 2 or 3 times more expensive than the ecc83 so im stuck with this !!!. All 12AT7 - ECC81 valves come AMPLITREX AT1000 or MAXIMATCHER tested. JAZZ consumption: 12 V 900 mA Standby <10 mW: Power supply: 115 V or 230 V AC input ACPS II. The TFK <> ECC801S is the best ECC81 ever made on this planet. Valve Question - ECC81/ ECC83. Posted in 12at7/ECC81, 12ax7/ECC83 | Leave a reply Westinghouse 12ax7 Long Gray Plates. So why do a 12AT7 (aka ECC81, CV4024) shootout? Because the opportunity arose when I had the Elekit TU-8340VK push-pull power amp in my stereo den a while back. Hi-just looked it up-----"This gives the Unisis Signature range exceptional bass quality and timing for a 35 watt valve amplifier, with excellent control and presence. E83CC is an old term for a special high quality ECC83 (=12AX7). These are rarer than gold in this quality! Made in Ulm, West Germany. die ECC81-83 haben die heizung im (üblichen) 6,3V betrieb folgendermaßen angeschlossen: pin 4 und 5 sind miteinander verbunden und bilden den einen heizungsanschluss, der andere ist die 9. 6V supply or in parallel from a 6. 12AX7 Family Tube Substitution. Siemens & Halske ECC83 Characteristics: - long plates - double getter support Considered the HOLY-GRAIL of the Siemens & Halske Munich West Germany tubes. (links 1, 2). 12ax7 ecc83 7025 12AX7 is a miniature dual triode tube with high voltage gain. La 12AX7 se puede considerar como dos triodos de la válvula 6AV6 en una sola válvula. The tubes are ECC85, ECH81, EBF89, ECC83, EBC91, EL84, ECL86, EM84. Anyone have any experiments with those tubes? All info. Originally, the 12AX7 / ECC83 vacuum tube was introduced to be a superior option for lower noise and microphonics over the 6SL7 tube that was commonly used in the 1940s. contact us 4 Pinehurst Lane Minesing, Ontario L0L 1Y2 705-737-6773 (tel) 705-737-6774 (fax) email us here. However the ECC81 and ECC82 they have a lower gain and are so designers sometimes use them instead. ECC81 Telefunken / RFT (NOS) ECC81 Telefunken, original boxed no diamond logo in the glas bottom / made in Eastern Germany by RFT   Telefunken used tubes from the RFT… To be able to use Tube Amp Doctor Onlineshop in full range, we recommend activating Javascript in your browser. Replaces 7025 tubes. 1 (10 votes, average: 3. EL821 = 6CH6 = CV4055 Amplifier Circuit Diagrams Please Note: To build these circuits, you should be an Experienced Electronic Technician. Non mi sentirei di consigliare la sostituzione con la ECC81: la 5751 invece al posto della ECC83 è una sostituzione fattibile nel 90% dei casi senza fare danni. The most common triode type found in guitar amps is the ECC83 / 12AX7, while the ECC81 / 12AT7, ECC82 / 12AU7 and 12AY7 occasionally make an appearance. This new production Mullard 12AT7 / ECC81 is suitable for low noise applications like microphones and recording gear. and no major problems appear in this section. Tested good. Tube Amp Doctor. Jan 15 2019 Talkin 39 Tubes Psvane vs Gold Lion KT88 Sign in to follow this. As far as pin outs are concerned the 12 series tubes are all interchangeable. This makes it suitable for high frequency applications. They have been used to drive audio units for decades and for good reason. Should have read 6AQ8/ECC85 and 6BK7A/ECC81 Also, again 6AQ8/ECC85 So no ECC83/12AX7's there. Output power is good for headphones. The JJ 5751 is a drop-in replacement for any 12AX7 / ECC83 tube. Full and chimey mids, a tight bottom end and greatly reduced hum and noise characterize this tube. The consistent use of the same type of valves is partly historical, since many modern amplifiers are derivations (or merely copies!) of a few classic Fender amps. Replacement Valve Kit For Fender Twin Reverb (4 x ECC83 1 x ECC81 1 x Balance £172. Added to the very successful Gold Lion series of tubes, these are the best new production 12AX7 and better sounding than most NOS tubes. 5 vs -10 to -13. I have not tried any other types. Mullard 12AX7. Large plate format, superior dissipation over the originals. The Electro-Harmonix 6CA7 is a drop in replacement for EL34 tubes. PSVANE 12AX7-T ECC83 Factory Matched Pair - Psvane MKII. Originally the tube was intended for operation in VHF circuits, such as TV sets and FM tuners, as an oscillator/frequency converter. Ecc85 vs ecc83. Silver vs gold is irrelevant here. ECC83/ ECC83S-GROOVE TUBES Groove Tubes ECC83-S Groove Tube is the most popular GT ECC83/12AX7/7025 replacement valve Marshall 4 Valve Harma ECC81 STR Pre Amp Kit. ECC81,ECC82,ECC83 versus ECC801S, ECC802S, ECC803S. 6V or parallel at 6. More difficult to find but worth seeking are German made Valvo and the early Holland made Philips Miniwatt and Philips "SQ". Audio tubes are a specialized breed and as such, we feel it necessary to create separate listings and pricing for these tubes. ECC81 12AT7, 6201 R. The bias current for 12AT7/ECC83 seems to be low. JJ/TESLA 12AT7 (ECC81) VALVE. Therefore the closest to the input would be the one inside the jacket/shield which is an ECC83 (red print Marshall Valve 00067). Swapping ecc81 for an ecc83 General. Click & Collect. 033 or 33mV) This is your desired bias voltage (probably between 30 and 40 mV). Many will get a little gleam of love in their eyes, and start gushing about how it’s the pack mule among tube circuits, with a mean kick that’s perfect for driving tone stacks. Vacuum Tube, 12AX7 / ECC83, Mullard Reissue, Preamp. Get some ECC81's. ECC81 12AT7, 6201 R. Followers 0. We enjoy the smooth, rich response in instrument amps too, especially in the V1 or reverb positions. Hello-- A few years after the Berlin Wall came down, perhaps in 1991-1995, many, many Telefunken ECC83 (and even many more "<>" gold pin Telefunken E88CC and E188CC) with the <> molded in glass bottom were released to USA, Western Europe, UK, and Asia markets. Die Doppeltriode ECC83 wird pro Kanal als Differenzverstärker von Transistoren angesteuert, was für einen stabilen Betrieb sorgt. It's high gain makes it popular in guitar amps, though it's also widely used in HiFi amps, especially in phono stages. TAD RT052 Tube ECC81/12AT7-CZ. ECC81 (2) ECC83 (4) 1819 EQ Clear Facets. Preamp Tube Gain Factor and Substitution Chart. voilà je sais que le COMBO HT1 R est equipé de deux lampes de preampli. Title: ECC81 Author: Philips Created Date: 8/14/1999 11:15:39 PM. ECC83 page sheet date 1 1 1970. call/email: 12AX7/ECC83: Amperex Holland Wide Plate Bugleboy NEW (NOS) 1960's Shorter, Wider Plate with Bugleboy Logo. 12AT7 Gold Pin (also ECC81) Premium gold pin version of 12AT7. These Gold Lion ECC83 / B759 12AX7 Gold Pin are hand selected matched tubes. I played my tele through one and thought it was a little too raunchy. Chi ha letto il Post Messaggi raccomandati. Teoretycznie, skoro ECC83 pracują przy znacznie mniejszym prądzie niż ECC81, to szumy powinny być niższe. The Ultimate 12AX7 enhanced with Gold Pins. Comparatif des gain pour les lampes ded préamplification 12AX7, ECC83, 12AT7, 12AU7, 12AY7, et 5751. 12ax7 ecc83 7025 12AX7 is a miniature dual triode tube with high voltage gain. msummers, 12AU7 and CV4003 are two different names for the same tube. The radio has a ferrite antenna, separate controls for bass and treble and pushbuttons for Bass-Solo-Intim-Jazz which reduce or enhance low and high frequencies. Heater is center tapped to permit operation in series at 12. So now you know. Hi-just looked it up-----"This gives the Unisis Signature range exceptional bass quality and timing for a 35 watt valve amplifier, with excellent control and presence. The longer one originally (my all time favourite ECC83) and the later shorter ladder anode (still excellent). There is a 26x18 cm full-range loudspeaker on the front and two 10 cm ones on the sides for midrange and treble. You'll also find that the MESA 12AX7 is both consistent and reliable in its smooth, balanced tonal response. (some electroharmonics 12AU7's are on the way so maybe I'll hear a difference there) Andre's comment over the bases brings up another issue that has been on my mind. From $150. ecc83 (12ax7) ecc82 (12au7) ecc81 (12at7) 12ay7, 5751, ef86 el34, e34l, kt77, 6ca7 6v6 el84 6l6, 5881 misc types Valve Amp Sets JJ EL34 Amp Sets JJ 6L6 Amp Sets JJ EL84 Amp Sets. Loud 12AY7 was original tube for V1 position in this circuit (fender tweed bassman), i find it very interesting :). We enjoy the smooth, rich response in instrument amps too, especially in the V1 or reverb positions. For instance, the 12AX7 made by Gold Lion is like this. Actually after writing post I googled more deeply and got some good posts about 12ax7 vs 12at7 differences. The first place was the Amperex 1958, 2nd was Telefunken smooth and followed by Sylvania. The bias current for 12AT7/ECC83 seems to be low. Other names for a 12AX7 include ECC83 5751 12DW7 ECC83, ECC82, ECC81, ECC823, ECC832, CV4004. Gold Lion ECC83 / B759 / 12AX7. SYLVANIA 12AX7A (ECC83) Twin Triode The SYLVANIA 12AX7A (ECC83)is a 9. Brimar thermionic products is the result of the frustration of not being able to purchase high quality valves at a reasonable price. Another common name for the 12AX7 tube is ECC83 and for premium versions the 7025 and ECC803 audio tubes. ECC83 Sign in to follow this. A quei livelli di guadagno, l'elevata transconduttanza della ECC81 non solo sballa il punto di lavoro, ma di solito porta a oscillazioni nei pre phono. Like OTM said, the 12AT7 has much lower internal plate resistance- Rp. The JJ is one of the best of the current ‘crop' but WELL behind the true item. Preamp Tubes: 12ax7 vs. Heater is center tapped to permit operation in series at 12. Next up was the Telefunken ECC83. vacuum tube) lub gazem pod niewielkim ciśnieniem (lampa gazowana, ang. 09″) unboxed weight: 8. みな、ピンアサインは一緒です。どういう風に特性が違うのか調べてみました。一応全て同じメーカーのデータシートを参考にしました。(RCAという会社)型名 12AX7A 12AT7 12AU7Aヒーター電流 0. ECC81 is 12AT7 medium gain pre-amplifying double triode. Four medium duty 50 Watt (RMS) Hiwatt specified loudspeakers ( TYPE 122231) mounted in a seperately tuned compartment. Very smooth and warm sound. TAD 12AT7 / ECC81 Premium Selected. pre amp: 3 x ecc83/12ax7 fx loop: 1 x ecc81/12at7; speaker output options: 1 x 16 ohm cabinet connected to the 16 ohm output 1 x 8 ohm cabinet connected to one of the 8 ohm outputs 2 x 16 ohm cabinets each connected to one of the 8 ohm outputs; unboxed dimensions (w x h x d): 40 x 21 x 18 cm (15. Be sure to look for reviews by our customers and the Top Seller marker if you need help deciding which to order. Loud 12AY7 was original tube for V1 position in this circuit (fender tweed bassman), i find it very interesting :). VLVE-00055 12AX7B/ECC83 Shuguang No Selection White logo VLVE-00067 ECC83S JJ Low Microphony Red Logo Black Marshall Label are EI's which are not made any more. 7025 was the designation used for a heavy duty version of the 12AX7. Hi-just looked it up-----"This gives the Unisis Signature range exceptional bass quality and timing for a 35 watt valve amplifier, with excellent control and presence. 50 Watts (RMS) Power. No, if all you care about is sound. call/email: 12AX7/ECC83: Amperex Holland Wide Plate Bugleboy NEW (NOS) 1960's Shorter, Wider Plate with Bugleboy Logo. Shop our great selection of 12AX7, 12AX7A, 12AX7EA, 7025, ECC83, ECC803S, 5751 (low gain), CV492, 7058, 12DF7, CV4004, B339, E83CC, M8137vacuum tubes now. That's strange but 82 and 81 ARE. Alcatel Adp. TrANsfer ChArACTerisTiCs pLATe ChArACTerisTiCs R. Ein Austausch ist nur mit Umlöten der Fassung oder Pinadapter. (links 1, 2). The 12AX7, 12AT7, and 12AU7 all belong to the same family of nine contact, twin triode tubes. 12AT7 Gold Pin (also ECC81) Premium gold pin version of 12AT7. 100% guarantee that our tubes will arrive as described and sound great. Reply to this topic; Start new topic; Recommended Posts. Resistor and caps used are basic but of good quality. Valve Question - ECC81/ ECC83. Either way if applied to an old production valve it means it should be top quality. " There are some big differences across the 3. The JAN Philips 6922 is a great overall tube for Hi-Fi. We will take a look at why you might, or might not want to swap out the different types of tubes. 75kg) Weight, Dimensions, and Manufacturer Part Numbers Black Shipping Weight: 51 lbs. So now you know. I tried ECC81, does a good job, but need less gain for sure! Somebody told me that 83-81's are interchangeable but 83 and 82 are not. Power Requirements: 100-120V 50/60Hz FUSE: T1AL/250V. Gold Lion Genalex. compared to 12AX7's and ECC81's. 2012 – 5 Beiträge : WANDLER VS VOLLVERSTÄRKER. The Mulard double triodes ECC81, ECC82 & ECC83 In response to emails asking about pin compatible valves for the classic audio double triodes we have produced this list. A medium-mu twin triode. Very smooth and warm sound. Good for phase inverters or reverb drivers. That distinction probably falls to the 12AX7, especially when you add guitar amps to the mix. 800 Saba-Modelle (in Bezug auf den Jahrgang) mit ca. ECC83 (8) EL34 (71) EL84 (44) KT77 (6) 3000854 Preamp Tubes Clear Facets. 2 mA de courant par triode (avec 10 à 20% de tolérance selon certains constructeurs) et au moins 1. JJ ecc81 Gold pin Is a low gain pre-amp valve that can substitute an ecc83/12ax7 valve In most situations to give more of a cleaner tone and less break-up. Tubes: ECC83 ECC81 EL95 EZ80 Schéma complet Amplificateur de sonorisation 100 Watts push pull EL34 sous 995V Tubes EF86 ECC40 x2 EL34 x2 GZ34 x2 Amplificateur stéréo ECL86 Amplificateur 100 WATTS PX25A P27/500 F410 Lampes EF6 AC2 P27/500 x3 PV200/600 x2 AZ4 Equivalents: P27/500 = PX25A PP5/400 DO24 D30 F410 K480 K450/25 LK4200 CV1040 NR47. vacuum tube) lub gazem pod niewielkim ciśnieniem (lampa gazowana, ang. VIVA TUBES Vintage NOS & Used Vacuum Tubes. The 12AT7 is not the most commonly used preamp tube in audio. We are all things tubes, Guitar amps, Bass amps and Hifi amps. Then there is the last of the ECC83s at the leftmost position in this. TrANsfer ChArACTerisTiCs pLATe ChArACTerisTiCs R. An ECC81/12AT7 has a lower plate impedance and more transconductance (Gm) than an ECC83/12AX7, so it will result in a cathode follower with a lower output impedance. Re: ECC83 vs ECC808 Buiten de pinout zou die buis heel goed moeten voldoen, gesteld dat de voeding de iets hogere stroom kan leveren. Boxes are originally factory sealed, in original 5-packs. 01 5 5 1970. Based on the popular Hiwatt model DR 504 but specified for use as a Bass guitar model. The ECC83 MG is a "Mid Gain" 12AX7 type tube. American Types Foreign Substitutes 0A2 150C2, 150C4, M8223, STV105/30 0A3 KD21 0A4G PL1267, Z300T. No attenuator. This unusual method of construction for sure guarantees very short signal paths, but may prove troublesome should modification is desired or service needed. 1958 (Green prints). Nice review DG. Good for phase inverters or reverb drivers. For reaching the design parameters of the original valve only valves that are directly equivalent should be used. Click & Collect. Best ecc83 valves. The first place was the Amperex 1958, 2nd was Telefunken smooth and followed by Sylvania. Siemens & Halske ECC83 Characteristics: - long plates - double getter support Considered the HOLY-GRAIL of the Siemens & Halske Munich West Germany tubes. I also read a ECC82 valve comparison/review between the AMPEREX 1958 made in Holland vs Telefunken smooth ECC82 vs Sylvania 12AU7. Formed from ‘The Great British Valve Project’ we have used the expertise of many engineers who have provided us with their preferred list of thermionic tubes. 12 2 2 1969. Brand New In Box Gain Tested Mullard Reissue 12AT7 ECC81 Vacuum Tube. Radio tubes are valves. Get some ECC81's. DOUBLE TRIODE. Question: if my guitar amp (old Echolette M40 -actually a PA amp) has 4 channels, can I put 4 different types of tubes, 1 in on each channel? Kind of dumb question maybe. Some people refer to this as "military grade" which is a misnomer -- because for the most part, the US military specified heavy duty tubes. ECC81-ECC82-ECC83 sono alla fine la stessa cosa? Da ccrl79c0, 30 Ottobre, 2008 in Riproduzione Audio. The 6SL7 type of valve has the same base as output valves such as the 6V6, 6L6, EL34 etc and were bulky, so the ECC8X family made a lower power, much smaller pre-amp valve. The ECC83 MG is a "Mid Gain" 12AX7 type tube. 6V or parallel at 6. This is a premium version of the ECC81 and the best way to describe the difference is to say that the Gold pin ECC81 is smoother and richer sounding. I tried ECC81, does a good job, but need less gain for sure! Somebody told me that 83-81's are interchangeable but 83 and 82 are not. 01 2 2 1970. It is a dependable, high mu double triode with reduced gain and clearer, more articulated tone than a higher gain ECC83. No, if all you care about is sound. compared to 12AX7's and ECC81's. Originally, the 12AX7 / ECC83 vacuum tube was introduced to be a superior option for lower noise and microphonics over the 6SL7 tube that was commonly used in the 1940s. Die Doppeltriode ECC83 wird pro Kanal als Differenzverstärker von Transistoren angesteuert, was für einen stabilen Betrieb sorgt. SKU: VAL-12AT7-JJ. Also, the 12AT7 has bandwidth to 40K as opposed to the 12AX7's 10K bandwidth. Tubes: ECC83 ECC81 EL95 EZ80 Schéma complet Amplificateur de sonorisation 100 Watts push pull EL34 sous 995V Tubes EF86 ECC40 x2 EL34 x2 GZ34 x2 Amplificateur stéréo ECL86 Amplificateur 100 WATTS PX25A P27/500 F410 Lampes EF6 AC2 P27/500 x3 PV200/600 x2 AZ4 Equivalents: P27/500 = PX25A PP5/400 DO24 D30 F410 K480 K450/25 LK4200 CV1040 NR47. Should have read 6AQ8/ECC85 and 6BK7A/ECC81 Also, again 6AQ8/ECC85 So no ECC83/12AX7's there. Aber sie ist NICHT pinkompatibel, sprich sie ist anders beschaltet. cool change, less gain, more tone. contact us 4 Pinehurst Lane Minesing, Ontario L0L 1Y2 705-737-6773 (tel) 705-737-6774 (fax) email us here. No attenuator. It is robust and available in a wide variety of textures and colors. You'll also find that the MESA 12AX7 is both consistent and reliable in its smooth, balanced tonal response. The tubes are ECC85, ECH81, EBF89, ECC83, EBC91, EL84, ECL86, EM84. A sample of two TUBE DRIVER An old Chandler with Mullard Ecc81 VS a new B. VLVE-00055 12AX7B/ECC83 Shuguang No Selection White logo VLVE-00067 ECC83S JJ Low Microphony Red Logo Black Marshall Label are EI's which are not made any more. Brimar thermionic products is the result of the frustration of not being able to purchase high quality valves at a reasonable price. These are rarer than gold in this quality! Made in Ulm, West Germany. Very low microphonic. The ECC83 family We have the ECC81 ECC82 ECC83 was introduced specifically for audio applications way back in 1954 to replace the earlier 6SL7 octal based valves. com http://www. Tolex is the most common covering found on the outside of guitar amplifiers and speaker cabinets. Originally, the 12AX7 / ECC83 vacuum tube was introduced to be a superior option for lower noise and microphonics over the 6SL7 tube that was commonly used in the 1940s. The one difference between their layout is that on an EL34, pin 8 does the cathode and pin 1 does grid 3. ECC83 jest zresztą powszechna w układach audio. Designing an AC Cathode Follower For the following example we will design a cathode follower to act as a buffer for an effects loop. EUR 29,00. Preamp Valves 4 X ECC83 / 12AX7 4 X ECC83 / 12AX7 4 X ECC83 / 12AX7 Power Valves 4 X 6V6 4 X 6V6 4 X EL34 / 6L6GC KT88 / 6550 Reverb Valve 2 X ECC81 / 12AT7 2 X ECC81 / 12AT7 2 X ECC81 / 12AT7 Mains Fuses 100 / 120V - T5 A 220 / 240V - T2 A 100 / 120V - T5 A 220 / 240V - T2 A 100 / 120V - T6. Highly recommended. Ein Austausch ist nur mit Umlöten der Fassung oder Pinadapter. - Valves: Preamp: 4 x ECC83/12AX7 & 2 x ECC81/12AT7. Tested GOOD for gain, transconductance, noise and microphonics. Best ecc83 valves. The consistent use of the same type of valves is partly historical, since many modern amplifiers are derivations (or merely copies!) of a few classic Fender amps. The 12AT7 (ECC81) has somewhat lower voltage gain than the 12AX7 (ECC83), but higher trans conductance and plate current. Like all Gold Lion Tubes, Gold Lion ECC83 is built with meticulous quality, which makes it ideal as the premium upgrade for any audio 12AX7 application. Scientist RRR. The 12AX7 has the highest gain at 100, the 12AT7 is lightly lower and the 12AU7 is the lowest gain of the group. Posted in 12at7/ECC81, 12ax7/ECC83 | Leave a reply Westinghouse 12ax7 Long Gray Plates. ECC83 (rausch-, klirr- und mikrofoniearme NF-Doppeltriode für NF-Verstärker) PCC84 (VHF-Doppeltriode, speziell für kleine Anodenspannungen wie sie in Kaskodeschaltungen üblicherweise auftreten) PCC88 (VHF-Doppeltriode in Spanngitter-Technik) ECC85 (VHF-Doppeltriode, verbessertes Nachfolgemodell der ECC81). Reply to this topic; Start new topic; Recommended Posts. 50 Watts (RMS) Power. An ECC81/12AT7 has a lower plate impedance and more transconductance (Gm) than an ECC83/12AX7, so it will result in a cathode follower with a lower output impedance. ECC83 vs ECC84 11-14-2006, 02:12 PM. Thinning out + Selling off many vintage 12AX7 / 7025 / 5751 / ECC83 tubes+ 12AU7 / ECC82 / 6189 / 5963 / 12AT7 / 6201 / [email protected] $40. ecc83 12ax7 ecc82 12au7 ecc81 12at7 12ay7 5751 ef86 el34 e34l kt77 6ca7 6v6 el84 6l6 5881 misc types Valve Amp Sets JJ EL34 Amp Sets JJ 6L6 Amp Sets JJ EL84 Amp Sets Jul 15 2019 Above we get Mullard labelling but there are some differences from Oatie 39 s Last edited by Jeff West 07 13 19 at 03 06 PM. They were also made to withstand bulb temperatures up to 200 deg C. Hi-just looked it up-----"This gives the Unisis Signature range exceptional bass quality and timing for a 35 watt valve amplifier, with excellent control and presence. 220-240v 50/60Hz FUSE: T0. Price 1 off (excluding vat+p&p) Electro-Harmonix 6922 - £16. more on quality of Mullard vs. These are actually quite different in characteristics to the ECC83. Bass, and Treble, Low Power switch and Gain Boost on the rear panel, Era correct cosmetics. The most common triode type found in guitar amps is the ECC83 / 12AX7, while the ECC81 / 12AT7, ECC82 / 12AU7 and 12AY7 occasionally make an appearance. VLVE-00047 12AX7B/ECC83 Shuguang Low Microphony Gold Logo VLVE-00049 12AX7B/ECC83 Shuguang High Microphony Gold Logo White Labeled Marshall VLVE-00041 WK4 is a EI. As well it offered more gain. Variants include: 7062, E180CC, E81CC, CV6091, 12AT7WA, 6060, 6679, 7492, A2900. ECC83 page sheet date 1 1 1970. ECC81 12AT7, 6201 R. The ECC83 / 12AX7 is a weakling in this regard, although for guitar applications it is often 'good enough'. It was developed around 1946 by RCA engineers in Camden, New Jersey, under developmental number A-4522. Beijing, China www. PSVANE 12AX7-T ECC83 Factory Matched Pair - Psvane MKII. This new production Mullard 12AT7 / ECC81 is suitable for low noise applications like microphones and recording gear. Both are excellent. (some electroharmonics 12AU7's are on the way so maybe I'll hear a difference there) Andre's comment over the bases brings up another issue that has been on my mind. However the ECC81 and ECC82 they have a lower gain and are so designers sometimes use them instead. Die Doppeltriode ECC83 wird pro Kanal als Differenzverstärker von Transistoren angesteuert, was für einen stabilen Betrieb sorgt. It is easy to listen SSB, even on 18 MHz. These Gold Lion ECC83 / B759 12AX7 Gold Pin are hand selected matched tubes. The longer one originally (my all time favourite ECC83) and the later shorter ladder anode (still excellent). 12AT7 (22) 12AX7 (129) 12AY7 (4) ECC81 (6) ECC83 (57) EF86 (9) 3000034 Reverb Clear Facets. Reviews of 12ax7/ECC83 vacuum tubes and equivalents A great article with in-depth breakdown of internal structure of Mullard tubes NOS vs 12at7/ECC81 (33. The 12AT7 is not the most commonly used preamp tube in audio. Bass/Middle/Treble (11) Bass/Middle/Treble with Adjustable Mid-Range (4) Tone (1) Tone (1) 5 Band Graphic EQ (2). 00 each or $70. 12ax7 ecc83 7025 12AX7 is a miniature dual triode tube with high voltage gain. 2 x ECC81(12AT7) power valves, Celestion 10" speaker. We are all things tubes, Guitar amps, Bass amps and Hifi amps. Created Date:. Vieni a scoprire Doge 6 CD Valvolare Ecc83 Ecc81 in vendita come Usato nella categoria Lettori cd. From $150. 12AT7 Gold Pin (also ECC81) Premium gold pin version of 12AT7. I cannot decipher what cables are used inside. Tube Testing Equipment. 2006 – Letzte Antwort am 16. The Tube Shop - Supplier of Vacuum Tubes 12AX7 / ECC83/ 12AT7 / ECC81 / 12AU7 / ECC82 / 5751 / 6922 / 6DJ8 / /thetubeshop. ECC81 12AT7, 6201 R. " There are some big differences across the 3. Next up was the Telefunken ECC83. Suitable for Fatman audio amplifiers. HHScott reference for fans of vintage vacuum tube Scott consumer hi-if components from 1946 to 1966. 12AX7 Family Tube Substitution. Non mi sentirei di consigliare la sostituzione con la ECC81: la 5751 invece al posto della ECC83 è una sostituzione fattibile nel 90% dei casi senza fare danni. ECC83 vs 12Ax7 Tubes – What is the Difference? One of the more confusing things about tube amps is changing them, especially when there seem to be so many different kinds available. There is a 26x18 cm full-range loudspeaker on the front and two 10 cm ones on the sides for midrange and treble. ECC81 page sheet date 1 1 1969. Occasionally you will find an ECC82 or ECC81 used as a pre-amplifying valve. So now you know. We carry. Butler with Siemens Ecc82 MJT stratocaster with Lollar special DR. All 12AT7 - ECC81 valves come AMPLITREX AT1000 or MAXIMATCHER tested. Based on the popular Hiwatt model DR 504 but specified for use as a Bass guitar model. My unit comes with 2x JJ ECC83 for the phono section and a Sovtek 12AX7WB for the line. Mullard CV4004 / 12AX7 British New Old Stock. Heater is center tapped to permit operation in series at 12. I also read a ECC82 valve comparison/review between the AMPEREX 1958 made in Holland vs Telefunken smooth ECC82 vs Sylvania 12AU7. 6p1 vs el84. VLVE-00047 12AX7B/ECC83 Shuguang Low Microphony Gold Logo VLVE-00049 12AX7B/ECC83 Shuguang High Microphony Gold Logo White Labeled Marshall VLVE-00041 WK4 is a EI. Vacuum Tube, 12AX7 / ECC83, Mullard Reissue, Preamp. It is easy to listen SSB, even on 18 MHz. turned out the tubes were ecc83 and not the ecc83s. Mullard 12AX7. Most tubes with ECC83 listed on the label are European, and the ones in demand are Telefunken, Amperex, Mullard, and Siemens. FAST & FREE. msummers, 12AU7 and CV4003 are two different names for the same tube. Tested GOOD for gain, transconductance, noise and microphonics. Why We Don't Sell Certain Brands. 1 x ECC83. 11K vs 63K. For reaching the design parameters of the original valve only valves that are directly equivalent should be used. Heater is center tapped to permit operation in series at 12. What this means is that the knee frequency of the coupling cap that is typically connected to the plate resistor will usually be much higher with the 12AT7. Die Doppeltriode ECC83 wird pro Kanal als Differenzverstärker von Transistoren angesteuert, was für einen stabilen Betrieb sorgt. Either way if applied to an old production valve it means it should be top quality. Added to the very successful Gold Lion series of tubes, these are the best new production 12AX7 and better sounding than most NOS tubes. the shop that I bought to said that there was a mistake on giving me the price, the price they gave me was for the ecc83 (what he told on the phone was ecc83s that douchebag ) and the price is 2 or 3 times more expensive than the ecc83 so im stuck with this !!!. Gold Lion ECC83 delivers a full sonic range with excellent articulation. Top Brand pre-amp tubes in stock ready to ship, 12ax7, 12au7, 12at7, 12dw7, ECC83, ECC82, ECC81, CV4004, ECC823, 5751, 7025, B749, B759 and plenty more amp tubes. 12at7/ecc81‎ (1 c, 3 p, 7 f) 12au7/ecc82‎ (1 c, 3 p, 10 f) 12ax7/ecc83‎ (3 c, 51 f) 2. 12at7 ecc81 6201 6679 12AT7/6201 TUNG-SOL $20 MULLARD 12AT7 labeled Amperex $35. However, some new production ECC81/82 have totally different looking plates, resembling ECC88. Why We Don't Sell Certain Brands. Output power is good for headphones. Posted on May 13, 2012 by. A lista de equivalência da válvula 12AX7 é bastante extensa e pode conter, além do código europeu ECC83, outros como ECC803, CV4004, M8137, 7025, 7025A e 6681, sendo a diferença entre estes tipos devida apenas a fabricantes diferentes ou versões com qualidade especial. Large plate format, superior dissipation over the originals. 11K vs 63K. Boxes are originally factory sealed, in original 5-packs. The Tube Shop - Supplier of Vacuum Tubes 12AX7 / ECC83/ 12AT7 / ECC81 / 12AU7 / ECC82 / 5751 / 6922 / 6DJ8 / /thetubeshop. 1 (10 votes, average: 3. ECC83/ ECC83S-GROOVE TUBES Groove Tubes ECC83-S Groove Tube is the most popular GT ECC83/12AX7/7025 replacement valve Marshall 4 Valve Harma ECC81 STR Pre Amp Kit. THis explains the thinner sound. The Brimar ECC83 will probably be better choice for pre amp tube than phase inverter. The Electro-Harmonix 6CA7 is a drop in replacement for EL34 tubes. But others like them. No attenuator. An ECC81/12AT7 has a lower plate impedance and more transconductance (Gm) than an ECC83/12AX7, so it will result in a cathode follower with a lower output impedance. The JJ 5751 is a drop-in replacement for any 12AX7 / ECC83 tube. This new production Mullard 12AT7 / ECC81 is suitable for low noise applications like microphones and recording gear. I've got a few dozen different ones and the plates have all sorts of variation in length. 12AX7 (also ECC83, 7025). Swapping ecc81 for an ecc83 General. 5プレート抵抗rp 80k 15k 6. Suitable for Fatman audio amplifiers. TAD RT005 Tube 12AU7. Brand New In Box Gain Tested Mullard Reissue 12AT7 ECC81 Vacuum Tube. 01 5 FP 1999. 12AT7 (22) 12AX7 (129) 12AY7 (4) ECC81 (6) ECC83 (57) EF86 (9) 3000034 Reverb Clear Facets. GOOD CLEAR LOGO: $119 ea: 12AX7/ECC83. Originally, the 12AX7 / ECC83 vacuum tube was introduced to be a superior option for lower noise and microphonics over the 6SL7 tube that was commonly used in the 1940s. Vieni a scoprire Doge 6 CD Valvolare Ecc83 Ecc81 in vendita come Usato nella categoria Lettori cd. However, I am unable to find any 1958 Amperex (made in Holland) valves on the net. 12AU7 is the American designation and CV4003 is the British designation. Radio tubes are valves. The JJ is one of the best of the current ‘crop' but WELL behind the true item. JJ Electronic ECC81 - 12AT7 Factory Data Sheet: ECC81 Factory description: Special grid plated by gold to reduce microphone interaction and noise. ECC81 12AT7, 6201 R. What this means is that the knee frequency of the coupling cap that is typically connected to the plate resistor will usually be much higher with the 12AT7. AnalogMetric. JJ/Tesla 12AT7 (ECC81) Valve; JJ/Tesla 12AT7 (ECC81) Valve. Genalex Reissue Ecc81 12at7 Gain Matched Sextet 6 Gold Pins Vacuum Tubes. TAD 12AT7 / ECC81 Premium Selected. Reply to this topic;. TDA1514A, ECC83 100R,2x180R, 2x68R. Very low microphonic. Die zweite Doppeltriode ECC81 ist die eigentliche Verstärkerröhre, die über ein entsprechendes Widerstandsnetzwerk zwischen 0 und 12 dB umschaltbar ist. Lampa elektronowa – element elektroniczny czynny składający się z elektrod umieszczonych w bańce z wypompowanym powietrzem (lampa próżniowa, ang. Full and chimey mids, a tight bottom end and greatly reduced hum and noise characterize this tube. ECC83 jest zresztą powszechna w układach audio. Occasionally you will find an ECC82 or ECC81 used as a pre-amplifying valve. ECC83 vs 12Ax7 Tubes – What is the Difference? One of the more confusing things about tube amps is changing them, especially when there seem to be so many different kinds available. compared to 12AX7's and ECC81's. Output power is good for headphones. We enjoy the smooth, rich response in instrument amps too, especially in the V1 or reverb positions. Plug and play. freehandarson 0 freehandarson 0 Pro; Members; 0 1,698 posts; Posted March 29, 2009. This makes it suitable for high frequency applications. turned out the tubes were ecc83 and not the ecc83s. The 6SL7 type of valve has the same base as output valves such as the 6V6, 6L6, EL34 etc and were bulky, so the ECC8X family made a lower power, much smaller pre-amp valve. 12AT7 / ECC81 Tubes ; 12AU7 / ECC82 Tubes ; 12AX7 / ECC83 Tubes ; 12AY7 - 6072 Tubes ; 12BH7 Tubes ; 12DW7 - 7247 Tubes ; 6922 / E88CC Tubes ; 6AQ8 - ECC85 Tubes ; 6C4 - M8080 Tubes ; 6CG7 - 6FQ7 Tubes ; 6EU7 Tubes ; 6H30 Tubes ; 6SL7 Tubes ; 6SN7 Tubes ; EF86 Tubes ; PCC88 - 7DJ8 Tubes. Heater is 6. The bias current for 12AT7/ECC83 seems to be low. 1958 (Green prints). 01 5 5 1970. Most tubes with ECC83 listed on the label are European, and the ones in demand are Telefunken, Amperex, Mullard, and Siemens. Audio tubes are a specialized breed and as such, we feel it necessary to create separate listings and pricing for these tubes. However the ECC81 and ECC82 they have a lower gain and are so designers sometimes use them instead. 02" (55 x 27 x 28cm) - Unboxed Weight: 45. I have some old Telefunken ECC83 smooth plate (12ax7) and ECC81 (12at7) tubes and I was wondering which will be the ultimate choice. Also, the 12AT7 has bandwidth to 40K as opposed to the 12AX7's 10K bandwidth. and no major problems appear in this section. To the left of this is another ECC83 (yellow print) followed by two what must be theECC82s (marked only with "Marshall Valve 00009") in a line. See similar items. Ecc85 vs ecc83. SKU: VAL-12AT7-JJ. The ECC83 MG is a "Mid Gain" 12AX7 type tube. The longer one originally (my all time favourite ECC83) and the later shorter ladder anode (still excellent). For reaching the design parameters of the original valve only valves that are directly equivalent should be used. DOUBLE TRIODE Ug(V) Ua(V)-8 -6 -4 -2 0 0 5 10 15 20 25 0 100 200 300 400. In this case I wanted to know how a modern tube would perform in terms of sound quality against an old Telefunken ECC83. 1 x ECC83. turned out the tubes were ecc83 and not the ecc83s. That's strange but 82 and 81 ARE. The 12AX7, 12AT7, and 12AU7 all belong to the same family of nine contact, twin triode tubes. 2012 – 5 Beiträge : WANDLER VS VOLLVERSTÄRKER. As well, first IF is 6AU6, vs the 6BA6 in the documentation. I played my tele through one and thought it was a little too raunchy. 7025 was the designation used for a heavy duty version of the 12AX7. Very low microphonic. ECC81 Telefunken / RFT (NOS) ECC81 Telefunken, original boxed no diamond logo in the glas bottom / made in Eastern Germany by RFT   Telefunken used tubes from the RFT… To be able to use Tube Amp Doctor Onlineshop in full range, we recommend activating Javascript in your browser. It may mean it is a specially robust 'military grade' valve or may mean it has specially low noise / microphony. die ECC81-83 haben die heizung im (üblichen) 6,3V betrieb folgendermaßen angeschlossen: pin 4 und 5 sind miteinander verbunden und bilden den einen heizungsanschluss, der andere ist die 9. 12AU7 is the American designation and CV4003 is the British designation. An ECC81/12AT7 has a lower plate impedance and more transconductance (Gm) than an ECC83/12AX7, so it will result in a cathode follower with a lower output impedance. Swapping ecc81 for an ecc83 General. Tubes: ECC83 ECC81 EL95 EZ80 Schéma complet Amplificateur de sonorisation 100 Watts push pull EL34 sous 995V Tubes EF86 ECC40 x2 EL34 x2 GZ34 x2 Amplificateur stéréo ECL86 Amplificateur 100 WATTS PX25A P27/500 F410 Lampes EF6 AC2 P27/500 x3 PV200/600 x2 AZ4 Equivalents: P27/500 = PX25A PP5/400 DO24 D30 F410 K480 K450/25 LK4200 CV1040 NR47. 25k Ω相互コンダクタンスgm 1250 4000 3100 μmhos といった. This makes it suitable for high frequency applications. VLVE-00055 12AX7B/ECC83 Shuguang No Selection White logo VLVE-00067 ECC83S JJ Low Microphony Red Logo Black Marshall Label are EI's which are not made any more. The former is rare [as I have them all ]. Valve Question - ECC81/ ECC83 Sign in to follow this. It’s usually a 12AX7 (aka an ECC83 in Europe and abroad), and it’s the small tube located farthest from the larger power tubes. The Brimar ECC83 will probably be better choice for pre amp tube than phase inverter. There is a 26x18 cm full-range loudspeaker on the front and two 10 cm ones on the sides for midrange and treble. 67 Similar to ECC83, but with different pin out. Mullard 12AX7. 1958 (Green prints). They were also made to withstand bulb temperatures up to 200 deg C. Alcatel Adp 81 Dry Vacuum Pump, N° 975342 Sp, Cp 51917, Bf Adp 81, N° 975323. Replacement Valve Kit For Fender Twin Reverb (4 x ECC83 1 x ECC81 1 x Balance £172. Jan 15 2019 Talkin 39 Tubes Psvane vs Gold Lion KT88 Sign in to follow this. 2006 – Letzte Antwort am 16. Sophia Electric Magic 126S Dual-Mono Stereo Integrated Amplifier. GOOD CLEAR LOGO: $119 ea: 12AX7/ECC83. bei der ECC85 wären den eine anschluss die vier, der andere die 5, die 9 käme idealerweise auf GND. 6V supply or in parallel from a 6. It is a dependable, high mu double triode with reduced gain and clearer, more articulated tone than a higher gain ECC83. Swapping ecc81 for an ecc83 General. ECC81 (2) ECC83 (4) 1819 EQ Clear Facets. Yes, if you're a collector. the shop that I bought to said that there was a mistake on giving me the price, the price they gave me was for the ecc83 (what he told on the phone was ecc83s that douchebag ) and the price is 2 or 3 times more expensive than the ecc83 so im stuck with this !!!. By freehandarson, March 29, 2009 in Amps. We will take a look at why you might, or might not want to swap out the different types of tubes. 02″) Unboxed Weight 30. Reviews of 12ax7/ECC83 vacuum tubes and equivalents A great article with in-depth breakdown of internal structure of Mullard tubes NOS vs 12at7/ECC81 (33. Heater is 6. As well, first IF is 6AU6, vs the 6BA6 in the documentation. AnalogMetric. and no major problems appear in this section. The JJ 5751 is a drop-in replacement for any 12AX7 / ECC83 tube. Mullard QUAD 4x NEW NIB 12ax7 ECC83 Long plates tubes - New. GOOD CLEAR LOGO: $119 ea: 12AX7/ECC83. 12AT7 (ECC81) Twin Triode Pre-Owned The 12AT7 (ECC81) is a 9 pin miniature type l2AT7 is a. The TH30 delivers a beefy 30 Watts, pushed out by the combo's single Celestion 1x12 G12H speaker, derived from four EL84 power tubes with the preamp section using four ECC83 tubes - in other words, the classic AC40-style arrangement. 75kg) Weight, Dimensions, and Manufacturer Part Numbers Black Shipping Weight: 51 lbs. It’s very smooth in Hi-Fi and guitar amps. 1 x ECC83. 12at7/ecc81‎ (1 c, 3 p, 7 f) 12au7/ecc82‎ (1 c, 3 p, 10 f) 12ax7/ecc83‎ (3 c, 51 f) 2. The cremé de la cremé. The ECC83 MG is a "Mid Gain" 12AX7 type tube. A lista de equivalência da válvula 12AX7 é bastante extensa e pode conter, além do código europeu ECC83, outros como ECC803, CV4004, M8137, 7025, 7025A e 6681, sendo a diferença entre estes tipos devida apenas a fabricantes diferentes ou versões com qualidade especial. 1958 (Green prints). Followers 0. The effects loop is also powered by an additional ECC81 valve. Tung-Sol 12AX7 / ECC83 Gold Pin (Each) Regular price $37. VLVE-00007 12AT7/ECC81 No selection White Logo VLVE-00009 12AU7/ECC82 No selection White Logo VLVE-00010 EL34 Svetlana VLVE-00033 SV6550C Svetlana White Logo VLVE-00038 6V6GT Shuguang White Logo VLVE-00039 KT66 Shuguang White Logo VLVE-00042 EL34B Shuguang Gold Logo VLVE-00047 12AX7B/ECC83 Shuguang Low Microphony Gold Logo. 000 Product Attributes brand genalex gold lion model kt88 power tube country region of manufacture russian federation custom detail new in box sku 3128512123193283 mpn kt90. Resistor and caps used are basic but of good quality. There is no difference between a 12AX7 valve and an ECC83. This is a premium version of the ECC81 and the best way to describe the difference is to say that the Gold pin ECC81 is smoother and richer sounding. 12AT7/ECC81; 12AU7/ECC82; 12AX7 ECC83 7025 5751; 6SC7 6SL7 6SN7 E88CC; EF86 ECC99 ECL82 12AY7 12DW7 12BH7; Rectifiers 5AR4 /GZ34 5U4 5Y3 EZ81; Uncategorized; Valve Kits. Re: ECC83 vs ECC808 Buiten de pinout zou die buis heel goed moeten voldoen, gesteld dat de voeding de iets hogere stroom kan leveren. 12 2 2 1969. Tubes: ECC83 ECC81 EL95 EZ80 Schéma complet Amplificateur de sonorisation 100 Watts push pull EL34 sous 995V Tubes EF86 ECC40 x2 EL34 x2 GZ34 x2 Amplificateur stéréo ECL86 Amplificateur 100 WATTS PX25A P27/500 F410 Lampes EF6 AC2 P27/500 x3 PV200/600 x2 AZ4 Equivalents: P27/500 = PX25A PP5/400 DO24 D30 F410 K480 K450/25 LK4200 CV1040 NR47. 75 operated independently of each other as they are in series only, because theres no centre filament tap at pin 9 as in ECC83. ECC83 vs ECC84 11-14-2006, 02:12 PM A Friend of mine has come across some ECC81, 2 and 4 valves. die ECC81-83 haben die heizung im (üblichen) 6,3V betrieb folgendermaßen angeschlossen: pin 4 und 5 sind miteinander verbunden und bilden den einen heizungsanschluss, der andere ist die 9. Cryo 12AT7 / ECC81 / 6201 Cryo 12AU7 / ECC82 Cryo 12AX7 / ECC83 Cryo 12AY7 Cryo 12BH7 / 6350 Cryo 12DW7 / ECC832 Cryo 5751 Cryo 6922 / 6DJ8 / E88CC / 6N1P Cryo 6C45PI Cryo 6CG7 / 6FQ7 Cryo 6H6P / ECC99 / E182CC Cryo 6N23P-EV Cryo 6N30P Cryo 6SL7GT / 5691 Cryo 6SN7 / 5692 / 6H8C Cryo EF86 Super Cryo Preamp Tubes Cryo Power Tubes->. pairAll have tested very strong,without gas shorts or leaks!Also have a matched pair of JAN - PHILIPS NOS ECG 5751 audio vacuum tubes @. ECC81 is 12AT7 medium gain pre-amplifying double triode. 09″) unboxed weight: 8. 3mv MC) - Gain MM 53db MC 72db - Load: imp: 47k MM, 100 ohms MC - Source impedance 50 ohms - Signal to noise level -75db (MM unweighted) - RIAA Freq response 20hz-20khz +0 – 1db - NO feedback used, Passive RIAA. This makes it suitable for high frequency applications. 58 New Matched Sextet 6 Reissue Genalex Gold Lion 12ax7 Ecc83 Gold Pin Tubes Sh. For ECC81 there is only average data published. 6L6 Based Kits; 6V6 Based Kits; EL34 Based Kits; EL84 Based kits; Others such as 12BH7 ECC99 Kits; Supermatch Valve Matching “Amp Talk” About us; Trade. Boxes are originally factory sealed, in original 5-packs. RFT E83CC ECC83 12AX7 THC branded 70's vacuum tube. Tested good. DOUBLE TRIODE Ug(V) Ua(V)-8 -6 -4 -2 0 0 5 10 15 20 25 0 100 200 300 400. Ecc99 datasheet Ecc99 datasheet. Aggiungi al carrello Preamplificatrici. These "<>" Telefunken tubes all had much different painted Telefunken logo than normal. Tube Depot carries a selection of 12AT7 / ECC81 / CV4024 Pre Amp Vacuum Tubes. Heater is 6. Preamp Tubes: 12ax7 vs. VIVA TUBES Vintage NOS & Used Vacuum Tubes. However, some new production ECC81/82 have totally different looking plates, resembling ECC88. FAST & FREE. In fact, I'm nursing a sick CAT SL-1 Ultimate preamp right now and the same thing inside there, I tried all my expensive NOS 12AX7 tubes inside using my old standby song ON AN EVENING IN ROMA and when I put in a pair of Telefunken ECC83 in there (just a few days ago), once again they worked their miracle, the song came alive, the organ fleshed. Top Brand pre-amp tubes in stock ready to ship, 12ax7, 12au7, 12at7, 12dw7, ECC83, ECC82, ECC81, CV4004, ECC823, 5751, 7025, B749, B759 and plenty more amp tubes. An ECC81/12AT7 has a lower plate impedance and more transconductance (Gm) than an ECC83/12AX7, so it will result in a cathode follower with a lower output impedance. Plug and play. 12AT7 / ECC81 Tubes ; 12AU7 / ECC82 Tubes ; 12AX7 / ECC83 Tubes ; 12AY7 - 6072 Tubes ; 12BH7 Tubes ; 12DW7 - 7247 Tubes ; 6922 / E88CC Tubes ; 6AQ8 - ECC85 Tubes ; 6C4 - M8080 Tubes ; 6CG7 - 6FQ7 Tubes ; 6EU7 Tubes ; 6H30 Tubes ; 6SL7 Tubes ; 6SN7 Tubes ; EF86 Tubes ; PCC88 - 7DJ8 Tubes. These are actually quite different in characteristics to the ECC83. Genalex Gold Lion ECC83/B749 is the ultimate in current production 12AX7. Can be also used as replacement for 12AX7 in many applications. The 6SL7 type of valve has the same base as output valves such as the 6V6, 6L6, EL34 etc and were bulky, so the ECC8X family made a lower power, much smaller pre-amp valve. Its rugged design and rich harmonics make this tube an obvious choice for musicians who need a reliable and high quality tube at a reasonable price. La 6AV6 es una versión miniatura de la válvula 6SQ7, una válvula con un triodo y dos diodos muy usada como detectora-preamplificadora en las radios de AM, que a su vez es similar a la vieja válvula 75 de los años 1930. So now you know. mullard magic mullard tubes mullard valves vintage radio military radio leak quad radford u52 gz34 kt66 px4 ws19 mcr1 spy set r1155. You'll also find that the MESA 12AX7 is both consistent and reliable in its smooth, balanced tonal response. Gold Lion Genalex. It was released for public sale under the 12AX7 identifier on September 15, 1947. We are all things tubes, Guitar amps, Bass amps and Hifi amps. It’s usually a 12AX7 (aka an ECC83 in Europe and abroad), and it’s the small tube located farthest from the larger power tubes. 09″) unboxed weight: 8. More difficult to find but worth seeking are German made Valvo and the early Holland made Philips Miniwatt and Philips "SQ". What this means is that the knee frequency of the coupling cap that is typically connected to the plate resistor will usually be much higher with the 12AT7. E83CC is an old term for a special high quality ECC83 (=12AX7). 11K vs 63K. DOUBLE TRIODE Ug(V) Ua(V)-8 -6 -4 -2 0 0 5 10 15 20 25 0 100 200 300 400. Re: ECC83 vs ECC808 Buiten de pinout zou die buis heel goed moeten voldoen, gesteld dat de voeding de iets hogere stroom kan leveren. 12AX7/ECC83: As above but with obscured, missing or other logo like Fisher, Dynaco, etc. The JJ ECC81 / 12AT7 is equally good for reverb driver, line stage, and phase inverter positions as well as the premier choice for first position gain stages. As far as pin outs are concerned the 12 series tubes are all interchangeable.