I've been running an old NAD 7400 receiver (125 watts/ch with higher short term output) into my Thiel CS6s. No major complaints, though maximum volume is restricted due to harshness above a certain level and I use a sub (Sunfire) to augment low bass. The combination sounds great on simple material (solo voice or guitar, small rock or jazz combos) but congests quickly when the signal is more complicated.
Room is vaulted 25x25, 1/2 wall open, 1/2 wall windows.
Now in the market for amplification. Looking for used less than $4K. Will keep the receiver as pre-amp for now.
I have heard my speakers with an Ayre V1 and know that it is sufficent to drive them to the levels I want with the clarity I need in a moderate sized room. New V1s are too expensive for my budget and I never see them used.
Currently considering a Levinson 331, sometimes available on Audiogon.
Any other suggestions? The Thiels need current.