Chapter 1: Fundamentals of Amplification

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. 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.

  Chapter, Fundamentals, 1 chapter, Amplification, Fundamentals of amplification, Ecc83