ARC DAC 3 MKII is in very good condition. I purchased in 1999 and used for approx. 2000 hours. Plays excellent and tubes are still in good condition. Just upgraded to AN 4.1x DAC which is why I am selling. I rated 7/10 only due to age; however, this unit has no scratches and is in very good condition.
The DAC3MKII uses a high-performance monolithic input receiver and a delta-sigma converter supplied to Audio Research by Crystal Semiconductor. The differential converter is capable of 107 dB dynamic range in the audio band, and includes 8x interpolation and a 64x oversampled delta-sigma modulator which outputs to an all-tube (four 6922 twin triodes), class A operation analog output stage. Constant-current source technology and highly regulated power supplies similar to Audio Research's best preamplifiers contribute to the natural musicality of the output stage