Well, I guess I am the proverbial contrarian here but; last night I played music for 2 hours non stop to start braking in a new pair of speakers I just purchased. I got the Wharfdale Pacific Evolution 30's. These speakers are rated at 6 ohms, 89 db sensitivity, 200 watts rms. I played fairly loud and continuous for the 2 hours and the sound was very, very good. The amp was hot but no a hint of stress or distortion, or any other anomaly. The speakers are not the most easy to drive nor are they the most difficult out there. Again, I personally can't understand the persistent negative reputation of these amps? Either I got the only 2 great PL 400 amps or others are doing something wrong with them?