One concern I have with the V-Link is its use of the host computer USB connection as a power source, and and the potential for introducing power supply noise into the down-stream DAC due to the lack of galvanic isolation when using the RCA S/PDIF connection. This concern was touched on in the April review, with the optical output being recommended for this reason (though I think JA used the RCA output with good results).
I have purchased (but not yet received) a V-Link to use with an HP laptop and I am wondering if using a separately-powered USB hub to interface the V-link to the laptop would provide any isolation and alleviate the above concern. Assuming the hub utilizes a high quality "wall wart" that is quieter than the laptop power supply (maybe a big assumption), could this potentially provde any audible improvement? I'm interested to know if anyone has experimented with this.