Hi, men! They got two HA3500s on rehearsal base we play... And both shut down after an hour of my playing... Indication stays in working order, amp's compressor reacts... Then after some minutes the sound comes back... Then this issue repeats in every 5-10 minutes... While figuring out the malfunctioning part I pluged in in an amp's loop return... The same! Tech said it is my case only and no one complained! Did anyone have such an issue with HA3500, and maybe know the reason? Thanks! P.S. And, yeah, that wasn't from the beginning... For a pretty long time I played 3-6 hour rehearsals without any issue. And every pedal in my pedal chain I'm sure works fine and was not changed before that troubles began. I'm concerned so much about it, cause looking forward to buy HA5500 and they (with HA3500) got a similar circuit and, I guess, reliability.