Woo Audio

WA23 LUNA Headphone Amplifier / Preamplifier

The Woo Audio WA23 LUNA is a single-ended triode, all-tube Class A headphone amplifier and preamplifier with transformer-coupled, point-to-point wiring. Its tube complement comprises two 2A3 power tubes, two 6C45 driver tubes, and one 5U4G rectifier, with self-biasing operation and user-selectable high/low impedance and level settings. It provides XLR and RCA inputs, switchable preamplifier or headphone output, a 4-pin XLR headphone output, and a 6.3 mm (1/4-inch) headphone output, supporting headphones from 8–600 ohms.