I am using a pair of DSP33s directly connected via a Optical to Coax converter into the DSPs. I am just controlling the volume through my PC. May not be perfect for critical listening but works very well for me. Pretty easy good sound smile

861v6, HD621, DSP6000s, DSP5k5HC, DSP5000s, Planar 470, Sonos, BD 50, Dune 3.0, NAS, htpc