Virgo II owners: What amp to buy?

I currently run my Virgos with a Symphonic Line tube pre-amp and I'm looking to partner that piece with a new (or used) amp. I bought the Virgos based on a listening experience I had at a Stereophile show in Los Angeles. If I remember the Virgos were paired with a Rowland integrated. I've been trying to recreate that sound ever since (yes, I know I should have bought a Rowland integrated but unfortunately did not). I love my speakers but they can sound a bit bass shy at times and an amp that "rounds" the sound a bit and maybe adds a little warmth would be a good thing. That said I would hate to give up the soundstage and clarity the Virgo bring. Any thoughts?