I'm trying to understand exactly how this works. From searching I mostly get that this is an overheating protection shut down. But what if my 350 is cutting out even after I have just turned the amp on for the days practice and is not hot at all? I have the 350 powering a pf410hlf and a mc-210E. So it's 4ohm load full 350 watts. Gain at 3 o'clock, bass at 2, mid at 11, treble at 11, volume at 2. Limiter button not engaged. It's loud at these settings but does not sound distorted at all. If I slap or strike a string hard it will cut out for about 2 seconds then come back on and play as normal. Is this simply telling me that there is too hot of a signal coming in too fast? Or should I be able to do this without the amp cutting out. I have only had this amp for 3 weeks now. I want to make sure that it cutting out is not just my error before considering exchanging it for a new one. Thanks for any help you can offer.