Last year I picked up a beautiful M90 amplifier that is fully functional, excellent cosmetics and is the heart of my second system. I've used it on a number of different speakers with various loads from 4 - 8 and various efficiency ratings, but nothing like Klipsch, etc that in the mid/high 90's or low 100's db. At low and moderate levels the amp works and sounds wonderful. At higher levels, the amp will go briefly into protection mode when pushed reasonably hard. It seems like this occurs way too soon as the spl is not that loud and for a 200 wpc amp, it should not be kicking in like that so soon. The power protection turns from yellow to red briefly cutting the power and then it returns. The dual red power LED meters are usually near the top of the scale by then or hitting it on peaks. I'm assuming this protection is exactly how it should function, but seems to be coming on too early. I've read in a few other threads here about the protection relays taking a longer time to kick on/off when the amp is turned on. Mine come on quickly, consistently when I turn on the power amp, so no issue there. I've read here about the need to touch up solder joints when the amp won't come out of protection mode. Is this something that's affecting mine tripping so soon? Any thoughts on what I'm experiencing? Thoughts on what might need to be remedied so I can fully experience the glory of this wonderful amp at much higher volumes? I love the looks and it's definitely a keeper. Thanks in advance guys!