Chris' post below about Crown amps got me thinking . . . How much power are you guys using to drive your Pis? I generally use 8W 300B amps to drive Theater 4s and have more than enough gain. The bass rolls off a bit but is ample and any tradeoff is well worth it. If I hook the 4s up to a 40W EL34 amp I can drive people out of the house. I can't imagine needing more power than that.Do people really use 100W or more to drive these things?