I have a pair of Cornwall 11's which I like a lot.I also have a number of differant vintage amps/preamps/integrated amps that I have tried out.I am presently useing a Marantz Esotec PM4.It sounds good, dispite peoples claims that it shouldnt.I also have a Pilot 240 integrated amp.It sounds great with 3 or 4 other speakers I have, but with the Cornwalls it sounds terrible. Not just poor or average but harsh,naked, distorted.Can someone explain to me why this amp which has a fairly good reputation and sounds fantastic with other speakers sounds terrible with my Cornwalls.