So... I joined the Concerto club today! Got a very nice, like-new condition amp via the For Sale forums here, and have been ignoring my other obligations tonight to enjoy it (right now, it's Gentle Giant's Free Hand with my T1s). Honestly, on first impression, this amp does not blow away the Gilmore Lite with DPS -- they're in the same general vicinity with one another. A longer listen, however, seems to reveal the Concerto's strengths: detail, tone, soundstage, and control of deep bass. Quite pleased so far... and at least a little optimistic that I'll be able to stick with a Concerto/WA6SE combination for a while without getting "the bug" yet again...