Which Tube integrated for Virgo?

One of the best demos I ever heard was the the AP Virgo driven by Audio Research CA50 and supplemented by the AP Rhea subwoofer.

Regarding the general question of integrated vs. separates, at some high level separates pull away from integrated, but at real world levels integrated have much to offer. With units from Jeff Rowland, Conrad-Johnson, Musical Fidelity, Sonus Faber, Pathos, Krell, etc., it's clearly possible to get first rate sound from integrated amps.

Cary makes a 845se int. sold only by upscaleaudio.com it should have the extra power you should need.I don't think a 300b based se amp would have enough power.

There really, as far as i am concerned, only 3 intergateds for this speaker, based on one's preference. Cary sli80 sig., Manley Stingray, VAC Avatar. The Cary is my favorite of the group, most musical as well as the most powerful(in ultralinear mode). The Manley is great for making you tap your feet, it really has the "timing" down of individual instruments and the ensemble as a whole(but not the most detailed in an SET kind of way); The VAC does the dance between the 2(Cary, Manley). I haven't heard the Rogue yet, so that could be a poss. the Cary has a remote, headphone, 40 watts triode/80 ultralinear, can switch output tubes (6550,kt88...)killer sex appeal(although nothing touches the MAnley here), and most importantly, is extremely musical!

i bought my first tube amp--cj's mv55--having auditioned it and vtl and arc's comparable offerings through a pair of ap virgos. give the mv55/pv10 combo a listen. personally, i liked that set-up better than the cav50 (cj's integrated offering) with the virgos. good luck.

Check out the EAR integrated amps.
Good Luck