there was a previous post on the swr musician's forum about the two on board effects on the 750X turning on intermittently and without prompting. now, i've had the amp for two years and it has done this occasionally and for no reason. it has done it in many different locations, with and without power conditioners, playing with an active and a passive bass, on both inputs, and through many different cabinets. i recently bought an ampeg svt-810 to match the power of the head it it was fine for about a week. at first, i thought it was the way i had the eq set and the fact that i was playing through a musicman sterling. the settings were: gain...2 o'clock aural enhancer...2 o'clock bass...4 o'clock with the turbo pulled mid freq...11 o'clock mid level...9 o'clock treble...2 o'clock master...between 2/3 o'clock after a week at these setting, which is what i normally play it with when through a cab that can handle it, the effects started kicking on again and everytime i turn on the subwave it turns on the overdrive. i tried cleaning the footswitch input jacks and the effects send/return jacks and it doesn't help anything. it also does it whether or not there is a speaker cabinet hooked up to it. i have tried playing with all the EQing turned down and it doesn't do it nearly as much, but with as much as i paid for this amp to get 750 watts out of it and the huge cab i paid good money for to handle those 750 watts, i really don't want to play as quietly as it's making me. so, if anyone knows what the hell is wrong with me, please tell me. i'd rather not have to send it off for warranty work because i need the damn thing and the closest place that does swr warranty work is an hour and a half away. but if no one has anything on it, i suppose that's what i have to do.