What is a hybrid amplifier?

A hybrid amplifier is one which uses transistors or semi-conductors in the circuit as well as valves. The purpose of using transistors and semi-conductors primarily allows the amplifier to be produced at a lower cost. A hybrid amplifier commonly would use mosfet transistors for the power output stage and valves for the pre-amp stage. Using mosfets for the power output stage means that the use of expensive audio output transformers are not needed. Although having said this, some very high end amplifiers are hybrid designs, utilising triode valves to control high power bi-polar transistors.

For audiophile purists, this compromise is often just not acceptable since it is still adding the harshness of the transistor circuitry.

All MUAMP amplifiers are pure valve circuits, we do not use any transistors or semi-conductors in any part of the amplifier, MUAMP pre-amplifier circuits and power output stages are purely valve based circuits.