Selling my Musical Paradise, MP D1 Mk 3. Bluetooth Tube Dac. It use two 6H6 tubes but can switch to any 6V tubes, ie 6922 or 6DJ8 . 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.