12AU7 is also known in Europe under its Mullard–Philips tube designation ECC82. There are many equivalent tubes with different names, some identical, some designed for ruggedness, long life, or other characteristics; examples are the US military 5814A and the European special-quality E82CC and E182CC.
A Comparison of Current Production 12AX7 Tubes. RCA and Sylvania first introduced the 12AX7 to the world in the late 1940s. Today, it is by far the most common preamp tube used for electric guitar amplification and there is an almost overwhelming supply of current production options to choose from.
ECC83S A. F. DOUBLE TRIODE. max 22,0 max 49,2 max 56,3. Base: NOVAL. Uf = 6,3/12,6 V If = 300/150 mA. Typical Characteristics: Ua = 250 V Ug = -2 V Ia = 1,2 mA S = 1,6 mA/V Ri = 62,5 kΩ µ = 100. Capacitances: system I. system II. JJ Electronic 5751 This again is a lower gain ECC83 and in the V1 position will push less signal towards the next stages so it will make the amp overall much cleaner with more headroom. Volume will go down a tad but if you are playing country then this will give a rich bright clean tone but the amp will be slightly quieter. Nov 29, 2014 · Last analysis of this amp - so far, I have seen no anomalies in parasitic or instabilities that the substitution of 12AX7 for 12AT7 has caused in the Mac MC 40. However, you cannot substitute a ...
May 23, 2013 · The 12ax7 is a miniature high-mu twin triode, each section of which has an individual cathode connection. It is especially suited for use in resistance-coupled voltage amplifiers, phase inverters, multivibrators, and numerous industrial-control circuits where high voltage gain is desired. Data sheet containing technical information, illustrations and photographs of ECC81 Mullard tube/12AT7 RCA valve/ 12AT7 tube data Tel: +44 (0)1403 784961 Email: [email protected]
Mar 19, 2018 · ECC85 Datasheet - Double Triode, pdf, pinout, equivalent, replacement, schematic, manual, data, circuit, parts, datasheet.
A good choice for phase inverters, reverb drivers, and general preamp use. This tube offers low noise, low microphonics, and warm smooth tones at a great price. Like all JJ tubes, it has a rugged construction that doesn’t compromise the sound of your amp. The JJ 12AT7 is a solid replacement for any 12AT7, ECC81, or 6201 tube. Find many great new & used options and get the best deals for Groove Tubes GT- 12AX7R Preamp Tube - NEW (B) at the best online prices at eBay! Free shipping for many products! The JJ ECC83-S tube has several improvements in its construction from the old ECC83 version. From our review of this tube: "This tube sports a different plate design than found in most 12AX7's. When you look at them you can't help but think that they must be rugged and good for the musician on the road.
This is why you will typically find JJ 12AX7 ECC83S Preamp Tubes in most guitar amplifiers where the tubes break up earlier and the player is searching for a grittier dirtier tone. This can be compared to 12AT7 ECC81 tubes which have an amplification factor of 60, and can be more commonly found in cleaner sounding amplifiers such as Fenders. 12AT7 has lower output and has more midrange focus 12AU7 has lower output than AT's and is pretty flat, same with the 12AY7. Obviously a lot more can be said about the effect each tube type has on tone but the best thing to do is have a listen for yourself and make your own determination on what type you prefer in your amp. Find many great new & used options and get the best deals for Groove Tubes GT- 12AX7R Preamp Tube - NEW (B) at the best online prices at eBay! Free shipping for many products!
12BH7/12BH7A vacuum tube is a medium mu dual triode originally designed as a driver in TV sets. 12BH7 Tube is capable of driving good amounts of current with low distortion. This makes it ideal as a driver for power tubes in modern audio amplifiers.
Dec 17, 2013 · Replacing the old 12AT7 in the Bassman Ten with a new 12AX7. The new tube starts at about 1:20 with full volume at 1:40. It was recommended to adjust the resistor values around this tube but I ... A high-gain 12AX7 really got the power amp sounding too smooth for my tastes, especially in the case of a smooth-sounding tube (i.e. Mullard RI). With a JJ or Amperex 12AU7--which both sound about the same in the PI, by the way--the tone was a lot crunchier, a bit tighter, and definitely more clear. I also got a bit more headroom.
Feb 12, 2010 · The 12AU7, 12BH7, and 6CG7 have very similar electrical characteristics and can usually be substituted for each other. When deciding what's best for you, the following notes may be helpful:
ECC82 is 12AU7 medium gain pre-amplifying double triode. Provides a very smooth sound with well-defined tones suitable for audio and guitar amplifiers. A good choice for phase inverters, reverb drivers, and general preamp use. This tube offers low noise, low microphonics, and warm smooth tones at a great price. Like all JJ tubes, it has a rugged construction that doesn’t compromise the sound of your amp. The JJ 12AT7 is a solid replacement for any 12AT7, ECC81, or 6201 tube.
12BH7/12BH7A vacuum tube is a medium mu dual triode originally designed as a driver in TV sets. 12BH7 Tube is capable of driving good amounts of current with low distortion. This makes it ideal as a driver for power tubes in modern audio amplifiers. 12a?7 Assortment – 12ax7, 12at7, 12ay7, 12au7. If you have been using any tube audio equipment or guitar amps in the past 50 or so years you have most likely seen at least 1 of these tubes in your device. They are mostly used in the preamp section or as a driver tube /control tube for a vibrato or reverb.