The 950's digital output is, from what I understand, purely a "pass-through" of a digital input from a source such as a DVD player, CD player, satellite receiver, etc. Unless I'm very much mistaken, the digital outputs are not intended as digital pre-outs (so no volume control, no bass management, etc.). Such a pre-out would require some unique processing - the digital signals leaving the processor would need to be re-encoded into some format such as Dolby Digital (in order to get multiple channels on a single output) or PCM (for a stereo output) so that they could be passed to an external device.