The most recent installment of [Dino Segovis’] Hack a Week covers the construction of a simple NPN transistor audio preamp. Some time ago, he built a small audio amplifier using an LM386 which ...

An electronic circuit that amplifies and equalizes the analog output of the cartridge in a phonograph turntable. The output is boosted to a level equivalent to other audio sources such as tapes ...

But that doesn’t mean there aren’t applications that leverage the “V” aspect, such as this nifty audio preamp using VFDs ... it would fare as an amp. The circuit takes advantage of the ...