Although [Marcel] hasn’t posted up detailed build instructions yet, his simple schematic should be all you need to get started. If you want some more background information about tube amps but ...

There’s a mystique among both audiophiles and musicians about vacuum technology, thus having a tube ... the guitar amps of the 1950s and 1960s so it’s not for audiophiles. The circuit is ...

After a brief review of the history of the K2-W vacuum-tube op amp, an LTspice model is used to create its schematic in ...