Tube Hybrid Amplifiers

A tube hybrid amplifier pairs a vacuum-tube input stage with a solid-state or class-D output section, combining the harmonic warmth and texture of valves with the power, damping, and speaker control of transistors. It is the practical way to get tube character with the muscle to drive almost any loudspeaker, in one chassis, and it sidesteps the extra heat, retubing, and lower power that can come with all-tube designs. The payoff is valve tone that pairs easily with real-world speakers and rooms. This collection spans hybrid integrated amplifiers, power amplifiers, and preamplifiers from the makers we carry.

Current highlights include Rogue Audio's proprietary tubeD topology, which runs a pair of 12AU7 tubes into Hypex class-D output modules in the Sphinx v3, Pharaoh II, and DragoN, and Unison Research's Unico line, which marries valve gain to a MOSFET output stage from the Unico Primo to the 150-watt Unico 150. For all-valve designs, see our tube integrated amplifiers and tube power amplifiers.