I have 40.1's and I've tried many amps and integrateds. Tube amps are superior in my experience. Rankings as follows:
- VAC PHI 200 (current amp)
- VAC 70/70 Signature (130 pound beast, great on vocals and jazz)
- McIntosh MC275 MKV (fun, gutsy classic amp)
- VAC 30/30 (incredible amp with midrange to die for, but could use a tad more power)
- Plinius SA-102 in class A (best solid state I've owned)
- Bryston 4BST (decent value at used prices)
- McIntosh MA2275 (too soft and mellow)
- Musical Fidelity M3 Nu-Vista (awful gear... will never buy MF again)