[Ynze] has built an audio amplifier that looks ... interesting things about [Ynze’s] amp, as well as many of the Gainclones, is the fact that they use no circuit board. All wiring is done ...

providing a superior audio experience. Experience top-notch sound quality with the BL20C mini amplifier's advanced circuit design that ensures hi-fi sound. Stream music from your favorite media ...

[Mikremk] demonstrates this with a simple but effective amplifier using a PCL82 triode-pentode. It’s a conventional tube amplifier circuit in ... mains transformer. Best of all it doesn ...