At ampsandsound, we build tube headphone amplifiers around a straightforward philosophy: good circuit design, quality components, and careful execution matter. Our amplifiers are designed and built by hand in the USA, using single-ended tube circuits, zero negative feedback, and custom-wound output transformers.

We believe the output transformer is one of the most important parts of a tube amplifier. It plays a critical role in how the amplifier interacts with the headphone, and it's one of the reasons we put so much attention into transformer design, power delivery, and impedance matching.

Not every headphone needs the same amplifier. High-impedance dynamic headphones and planar magnetic designs can place very different demands on an amplifier. Our lineup reflects those differences, with a range of tube configurations, power outputs, and impedance options to accommodate different headphones and listening preferences.

From the Mogwai SE and Bigger Ben to the Nautilus and Red October, each amplifier has its own character and purpose, but all share the same foundation: single-ended tube circuits, custom-wound transformers, and the kind of hands-on construction that allows us to build, service, and support these amplifiers for decades.