Basically brand new unit. Retail price $8900. I'm set with my other amps. All headphones sound great on it. German built dac/amp. It does not have pre-outs. Headphone outputs are pentacon, 4 pin xlr and 6.35 mm. Has many digital inputs plus HDM inputs one with audio return. Power 700 Am. It's ment for planar headphones so it uses high current instead of high wattage. Wattage is still used. It was strong enough to enjoy my 1266TC with no distortion and I listen to Dubstep. Gives you bass treble and balance control. Crossfeed, filters, loudness and impedance control. T+A has their own dac technology.