I have been using this amp for a few months. Recently reconfigured the back area. The only thing different this time was I took both speaker leads and landed to terminal strip and ran 1 8ga speaker cable out to amp. Usually had 2 10 ga. cables. Could that be what caused it to smoke when tuning again. I just was trying to find out if its repairable, or if anyone else ever had this problem. Ireally am not in position to replace it but if I must I will.