Any comparison of the Mac G5's ADC with an outboard Apogee, Benchmark or similar quality products will readily show the deficiencies of the Apple's converters.
You could write the files to DVD-R in DVD-V format which supports 24/96 with a few different softwares out there. Make's a "DAD" disk like Chesky's did for a while.
I recorded an MFSL UHQR LP (probably the best there is) through my USB Audiophile 24/96. I then burned it to DVD-Audio via Discwelder Bronze and played it back on my same system on a univerasal player. The DVD-Audio was good, but not as good as the original vinyl. There was a loss of ambient retrieval and dynamics. However, it's still the best way I know to record LPs.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.