Selling my Musical Paradise, MP D1 Mk 3. Bluetooth Tube Dac. It use two 6H6 tubes but can switch to any 6V tubes, ie 6922s or 6DJ8s . Fixed or variable volume outputs. 3 inputs....( coaxial, Bluetooth or USB.} Very nice sounding DAC. Big and deep soundstage, deep tight bass, extended high. Low hours. Can be audition in my system.