The Woo Audio WA6 is designed and hand-assembled at Woo Audio's facility in Long Island City, New York, USA.
It is in mint condition with no issues. Need to thin the herd. It works with all headphones because it has an impedance switch on the back. It can be set for 8 to 99ohms or 100-600ohms. I have used everything from Meze 99 Classics to Liric II to Grado GS1000 to Audeze LCD2 headphones and they have all worked well together.
It has 2 6DE7 tubes and 1 5AR4 tube. The 5AR4 tube is a Sophia Electric Princess 274B which is the $250 upgrade tube.
Width: 5.5inches
Depth: 12inches (including the knob and jacks on the back)
Weight: 13.5lbs
Inputs: RCA(L+R)
Output: 1/4 headphone
Output Power: 580 mW at 32 ohms to 400mW at 600 ohms