Optical or USB Dac?
I'm hoping for some advice.
I have a Mac Mini (2013), an Onix OA21 amp and Celestion Impact 10s. Currently I'm using a Roland UA-25 mainly as a DAC and things are sounding quite good, that is, until I pug in my Shure se530s (for testing only). It is then that I can tell that it's the DAC that's the weakest link and the Amp is making up for it. My iPod sounds better.
For this reason I have my eye on either:
DacMagic 100 (USB)
E-DAC 24 bit (USB)
Second hand Beresford TC-7510/7520 (Optical)
Very tatty second hand Dacmagic 2 (Optical)
I guess my question for-mostly is, is USB better than Optical or the other way around? (from my Mac).
If USB is better, will the apparent superior quality audio of the beresford make up for it?
If USB is definitely better... E-Dac or DacMagic 100?
If there is no real difference will the cheapest of the lot do ... dacmagic 2?
I will only be connecting the mac so no selecter is needed, a pre-amp would be nice though, for volume control (Beresford TC 7520 has this).
Thanks for reading..... J.