Mcgarick, I share your findings about the Virtue. The One.2 is sonically the same as the Sensation that I own. You mentioned the Astron LS-10A power supply, who or where can I check it out?
In my system, the Sensation 901 with the Onda Systems interconnect and power cords make magic together. Having owned 300B SET amps, I found this combo superior in most areas with GREAT dynamics and detail. What a fun amp to listen to everyday. Surprisingly, I Don't miss the battery power supply.
This is an outstanding amp with lots of possible upgrades as Mcgarick mentioned.