The design is inspired by the guitar amps of the 1950s and 1960s so it’s not for audiophiles. The circuit is a pretty conventional single-ended one with a two stage double triode preamp and a ...

On the day mini-amps were invented, electric guitar players the world over rejoiced ... aux jack and connect to an LM386 low-voltage amp circuit which [Olson] assembled and mounted into the ...

The Red Dog is one crazy beast, with an SHH pickup configuration, a Bigsby, and a Destroy circuit that applies a whopping boost ...

New guitar tones can be downloaded into the device, where they run as software rather than as analog electrical circuits in an amp or foot pedal. In other words, the Spark 2 is the latest example ...