Are ECC83 tubes the same as 12AX7?
The ECC83 Valve – also known as the 12AX7. The 12AX7 Valve (or 12AX7 vacuum Tube) is a small preamplifier valve which is identical to the ECC83 – same valve, just a different name. It has two identical triodes both of which have a high voltage gain. It is used in 99% of all guitar amplifiers.
What are 12AX7 tubes used for?
The 12AX7 is typically used as a class-A amplifier in the hi-fi, professional line and microphone preamps and is usually, always found in the preamp sections of tube guitar amps including Fender, Marshall, Boogie and Soldano.
What is an ECC83 valve?
The ECC83 high impedance amplifier triode was designed specifically for audio use and has a high amplification factor of 100. Mullard describe the ECC83 as a high μ double triode, having separate cathodes, primarily intended for use as a resistance-coupled amplifier or phase inverter.
What is the difference between ECC83 and ECC82?
They are interchangeable, just the ECC82 will be a have slightly less gain. The voltage gain of a valve is entirely dependent on the circuit in which it operates.
What is the EI code for an ECC83 tube?
These are original ECC83 EI audio tubes, long ribbed gray plates. NOS, no printing, without boxes. 2A1 EI code for ECC83 / 12AX7, smooth Telefunken type plates.
Is this the last made ECC83/12AX7?
This is the last fine EU made ECC83 / 12AX7. They are (almost) identical copy of genuine Telefunken’s smooth plate ECC83 / 12AX7 from 60s. They are done on original Telefunken tooling machines in EI tube plant in Nis, Serbia.
What brands of EI tubes are there?
During 80s and 90s when West European tube plants were closed, many Telefunken, Siemens, Philips, Valvo and other brands were actually EI tubes. You can find them also branded like premium, long life types E83CC and ECC803S.
What are the different types of ECC83 Telefunken 12AX7 plates?
Please go to this article if you are interested in all details and types of genuine ECC83 Telefunken 12AX7 types Berlin or Ulm made. EI Nis has also the same version in silver (“nickel”) plates and completely another version on Philips tooling machines, they are ribbed plates.