** This Ad is Marked as SOLD by seller and cannot be responded to. **
This amp was the top of the heap for the single-ended Headroom Desktop units and retailed for a staggering amount when it was new around $1800 or so. Today it is still a competent performer, I can tell you it will best many of these "high value" amps being put out today by manufacturers. This amp has incredible synergy with Sennheiser headphones, the opa627 max output boards of this amp were some of the best and most expensive that headroom made and when you feel this thing in your hands it is clear that no corners were cut in the build quality.
This amp is a swiss army knife; two headphone outputs, two inputs, a totally useful crossfeed and brightness (EQ) settings. It has a great built in USB/Coax/SPDIF DAC ~ headroom's maxed out version. The pre-amp output believe it or not sounds incredible and can be turned off separately from the headphone out. To top it off this amp comes with the linear power supply, no cheapo switch mode supplies here.
Condition is excellent and I've used every function it has to offer. No signs of abuse and gently used ~ worst I can see is some scuffing only seen on bright lighting near the USB jack.