Unfortunately, I don't know what works with the Cary pre. But.....you could try the tube pre/ss power combo. It works nicely for me (VTL/Krell). A used BAT VK 3i w/VK 200 maybe. I've heard this on B&W and Vienna Acoustics with very good results. BAT also has a new VK 3ix with a VK 250. Both of these would be plenty of power for the de Cappo's. I did audition the Rogue 120 monos w/Thiel 3.5's and their bass control was adequate, not great, but acceptable. How about the Quicksilver V4 monos? Haven't heard 'em but they get great reviews. Last suggestion is to look at the VTL stuff. Because the DeCappo's are so efficient, I would think that the VTL MB 125's would work pretty well. Those amps have EL 34's. The VTL ST-150 has a bit more power and uses 6550's, so I imagine you would get better bass control with that. The pre also has some influence on bass and the VTL's do a wonderful job in that area. Another idea....a Sophia Electric KT-88 integrated. I heard one driving Wilson Benesch Curves.Oh, man, excellent!!! ALso, you could query the A'gon and AA folks and see if someone is using a ss with the Cary. I'm starting to ramble. Good luck.