Benchmark DAC1 using Toslink input

i've been getting rather fantastic results from an Apple G5 tower toslinked out (same generic glass cable as mentioned earlier) to an AA cap mk 11. In an AB session with the built -in transport in the AA, the tweaked out G5 does better than hold its own, and it fact develops a deeper and wider soundstage. The system is also highly resolving; JC 1 monoblocks driving Soundlab A1's, all audiophile approved cables. tweaks and room treatments employed. One thing I've noticed that struck me as kind of odd is that the computer gear doesn't seem to respond to tweaking like my stereo gear. Roller blocks under the external Firewire 800 drive my music streams from had little if any effect. Similarly, a BDR Shelf for Source. Strange.

I'm interested in this DAC as well for the same purpose. For those who have the USB version, what's the comparision between the USB out and the toslink output? I presume from a notebook, the usb should be better?

well I don't think there are too many laptops with a Toslink output...