Excellent condition M1HPA available. Some faint rub marks on top from rubber feet, but you have to look hard to see them. Line out works as a pass through and unit does not have to be powered on to use connected device. I have not used the USB so I can't say if it is working or not. Used it as the excellent amp that it is. USB (type-B) port supports Windows 98, ME, 2000, XP, Vista, and 7; as well as MAC OS X). Great sounding amp, but it is surplus to my needs, so letting it go.
$300 $250
*Price drop. Motivated to sell.


My asking price includes shipping (PP F&F). Will consider trades for Schiit Valhalla 2, or IEMs.

• low-distortion, pure Class A headphone amplifier
• THD: 0.008% (10-20,000Hz)
• frequency response: 15Hz to 75,000Hz (-3dB)
• signal-to-noise ratio: greater than 109dB (A weighted)
• output impedance: less than 1 Ohm
• output power: 1.1 watt at 32 Ohms
• USB Type B input with built-in Mac and PC compatible drivers for computer audio
• 1 pair line-level RCA inputs and outputs
• 1 pair RCA preamp outputs