A loudspeaker designed for tubes — not merely compatible with them.

LUMEN is built around one principle: efficiency as freedom. With 95.5 dB sensitivity, it allows low-power single-ended triode amplifiers to breathe, revealing dynamics, texture, and scale at natural listening levels.

Its cabinetry is hand-assembled and formed from a single walnut tree, preserving visual and tonal continuity across the pair. The crossover is voiced by hand to support an unforced, immediate presentation.

LUMEN is not a “tube-friendly” speaker.

It is a speaker designed for tubes.

Follow the LUMEN build on Instagram: cabinet details, crossover voicing, room tests, and listening notes.