Anyone run one of these Amps? Ive had one for almost a year and it keeps cutting off when the bass hits. I have a good ground,wiring, and my sub is not blown. I think the AMP has an internal problem. Its a zxI 6406 model (4 channel). I have it bridged on both sides. 4 speakers on ch1 and 1 sub on ch3. I hope Sonic will exchange it for a newer model, but at this point I don't trust these Hifonics amps anymore. Thinking of getting the Kicker zx650.4.