Unison Research has been admired and appreciated worldwide over the last 20 years. From the beginning, our goal has always been to convey pleasure by listening to music. We have focused our experience in the production of valves and on the design of hybrid electronics. It takes real passion to create products that provide the gift of timeless pleasure.

All Unison Research products are characterized by an elegant style and the care with which wood and metal parts are selected for each design. It’s a quality that is recognized and appreciated worldwide.

We firmly believe that a system of high-fidelity music reproduction should not only be a pleasure to hear but to see as well.


Unison Research's track record with sensibly priced valve amplifiers is second to none. The Triode 25 is yet another strong performer that marries fine sound and distinctive aesthetics with pleasing build.
What Hi-Fi? | Triode 25 Review




Unico Series

Valve Series