I have known a dealer who said that the Densen B100 works really well with the virgos. www.densen.dk. It's European so no problem with the voltage, and can be bought in the US from www.audiooutlet.com.
I run a Densen with SPica speakers and the imaging is great, with a very smooth top end.
I run a Densen with SPica speakers and the imaging is great, with a very smooth top end.