Quloos QLS MC01/MC01se Portable USB DAC/AMP Dual Flagship CS43131 HiFi Decoder Headphone AmplifierQULOOS QLS MC01 MC01se Portable USB DAC AMP Dual Flagship CS43131 HiFi Decoder Headphone Amplifier Design idea MC01 provides both 3. 5mm single end and 4. 4mm balanced headphone outputs. It utilizes only half of the dual decoding chips for the 3. 5mm single end output. The balanced port of MC01se has been cancelled. With the parallel output of two DACs, the 3. 5mm single ended output can be served by both DAC in four ways. Also without the balanced