Excellent condition. Has some very small marks which are so insignificant that they don't show up on photos. This amp drives difficult headphones like Sennheisers with no problems. Excellent sound combining the best of both tubes and solid state. Tubes can be biased from the top of the unit (each tube biased at 13.5 V each). Excellent parts quality. Tons of info all over the web.
I upgraded the volume knob as the original had a pinkish tint which was very ugly. This was a $20 upgrade but looks much better than the original.
Extra set of tubes. Hefty power supply is included.