31+ Preamp Tube Gain Factor Background. They do the they are mostly differentiated by their gain factor— the degree with which they increase the signal they are given. You can change speakers and you can change tubes.

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Quantum™ amps' inputs feature the. The preamp has two different knobs: Tubes are literally the amplifiers at the heart of your amplifier:

Yet another important factor to consider is the volume control.

This tubes can work with low anode voltage! A tube preamp is an amplifier with one or more tubes (lamps). Gain gain gain gain gain. Power amps do current gain and preamps do voltage gain.