This is the Woo-Audio WA6 vacuum tube headphone amplifier, it is a  single-ended Triode Class-A, all tube drive, with output transformer coupled

The WA6 is high performance headphone amplifier in a compact size, with a realistic, warm, smooth sound, its versatile design enables it to  drive a wide range of full-sized headphones and in-ear monitors, with a high/low gain control, to perfectly match your headphones. It consists of two 6DE7 tubes used for both drive and power tubes at the same time, and one 5AR4 as a rectifier tube, the 6DE7 is a dual triode tube, consisting of one drive triode and one power triode. Its performance is similar to a combination of a 6SN7 and a 2A3.

The tubes are very easy to replace so you can upgrade to your preferred tubes to get the sound you love. 

WA6 is available in a  selection of 2 colours, please use the drop down menu on the right to choose your preference and please note that for some upgraded models a longer delivery period might be required,

• Point-to-Point wiring
• Pseudo-dual power supply
• All tubes. No semi-conductors in the entire circuitry
• High or low headphone impedance switch
• 80 watts specially made toroidal power transformer.
• Full aluminum die-cast chassis, anodized finish
• Whole aluminum volume knob and power switch button