I measured the Mojo Mystique X SE with my Audio Precision SYS2722 system1 after leaving the processor decoding AES3 data for several hours to make sure it was fully warmed up. A slide switch on the processor’s back panel lifts the DC ground from the AC, chassis, and Earth grounds. The manual recommends lifting the DC ground; it also says that most people prefer the single-ended analog output. So I performed a complete set of tests using AES3 data with these outputs with the DC ground lifted. I repeated some tests with the balanced outputs, with USB and coaxial S/PDIF inputs, and with the ground connected.
The AES3 and coaxial S/PDIF inputs locked to datastreams sampled at all rates up to 192kHz. Another slide switch above the USB port, labeled “USB Lift,”
