This amp design uses a plate voltage of 12, although the 12AU7 can handle up to about 330. Since the 12AU7 is of the Twin Triode variety, one tube can be used to amplify both a left and ...

The design is inspired by the guitar amps of the 1950s and 1960s so it ... two stage double triode preamp and a single power output tube. The transformers are usually the difficult part of ...

NAMM 2025: Bad Cat has announced the welcome return of respected amp designer Mark Sampson – best known as the man who founded Matchless and the design brains behind the brand’s early models ...