Picked up a Bel Canto Reflink USB converter to use with my Wyred DAC-2. Nice upgrade, not subtle like so many upgrades in audio. More detail, better imaging, better timbre with strings, just all around better. I am currently using a cheap digital coax between the Reflink and DAC-2 until I can get an AES/EBU cable which may further enhance performance, not to mention the unit is still breaking in. I know W4S has some surprises in store for us DAC-2 owners soon that will take the DAC-2 and USB input to the next level, it will be interesting to see how that implementation compares to the Reflink.