Tube Integrated Amplifiers

A tube integrated amplifier runs your source through a vacuum-tube signal path and a matching power stage in one chassis, delivering the harmonic richness, midrange presence, and three-dimensional soundstage that solid-state designs chase. Because the preamp and power sections are matched and built together, a good integrated removes the guesswork of pairing separates while keeping the valve character intact. This collection gathers all-tube integrateds from Rogue Audio, hand-built in Pennsylvania, and Unison Research, hand-built in Italy, for the listener who wants that sound in a single box.

Rogue's Cronus Magnum III pairs a triode preamp with KT120 output tubes and switches between ultralinear and triode modes on the fly. Unison Research spans the entry Simply Italy, the Sinfonia, and the single-ended 845 power of the Simply 845. Want valve character with solid-state grip and higher power? See our tube hybrid amplifiers. To build from separates, explore tube preamplifiers and tube power amplifiers.