The pedal is used to try to mimic the sound of a vintage tube amplifier.

Usually this involves using a circuit topology similar to that used in tube amplifiers.

This use is still relevant today because tubes and tube amplifiers continue to be produced for niche markets.

This was a 50-watt tube amplifier with a single 15" speaker.

He goes on with self-glorifying statements like, 'I made my first tube amplifier in 1957'.

And besides, that matching doesn't buy you anything anyway except lower distortion - which, in a tube amplifier, is not what you're looking for.

The tube amplifiers he now stocks are priced up to $40,000.

Original overdrive occurred when players first cranked their tube amplifiers up to 10.

Thus, the noise figure of tube amplifiers increases with frequency.

FT-101 is a set that combines a solid state transmitter, receiver and a tube final amplifier.