Yeah my setup is a little bit wacky right now too.
LPS feeds digital into both Bifrost and DAC-100, both those feed into HAP-100, that feeds into Icon2 which powers my HE-6. The LCD2 is plugged into one of those somewhere, as well as a modded T50rp and an AKG Sextett. When I start comparing amps I'll toss the Lyr a Bottlehead Crack.
Of note, I can't detect any difference between coax or digital. I haven't actually tried usb directly into the DAC-100 yet.
Also curious, comparing the DAC-100 vs the Bifrost feeding a simple sine wave, I notice an odd warble coming from the Bifrost. Most noticeable to my ear with tones around the 500 Hz mark, though others are detectable (but it's too unpleasant to listen to anything above 2kHz). It's extremely minute and I can't quite tell if it's a frequency or amplitude warble, but it's there. Undetectable when playing music though. If I had to hazard a guess (and a rough one at that), I'm thinking it's some sort of intermodular distortion, maybe coming from the power supply.
Edited by Armaegis - 11/22/12 at 9:42am