[Keri Szafir] is no exception, and she’s produced a stereo tube amp with a few modern features. Electrically it’s a relatively conventional single-ended design using a double triode and a ...

Yes, vacuum tubes do sound better than transistors ... Schematic of battery operated tube preamp. In this design, two pre-amplifiers described above are used with a battery powered high voltage ...

The WA7 has a cool cube design that uses a glass cover that goes over its premium Polytetrafluoroethylene (PTFE) tubes. Its ...

with rounded edges and a sleek design available in either black or red. One big change is the addition of two JAN6418 vacuum ...