No special “warm valve sound”, but it did give me the ... because it’s possible to make a simple headphone amp with this circuit if you’re prepared to add to it a little.

Most amp tremolos are based on a circuit called a phase shift oscillator. The circuit uses a single valve stage to generate a ...

This circuit layout produced low distortion ... It had the sound of a valve amplifier with a cool-running transistor design. The 33 and 303 amps were so good, they are still sought out by made ...