My used DC 3.5k has stood up to me doing stupid shit to it on purpose, wiring it to .5 ohms and seeing voltage well into the 9s repeatedly.
Plus, being a total dumbass when I first installed it a screw driver was touching the pos and neg speaker bolts coming out of my box oops, the amp
went into protect instead of frying.
DC audio amps are worth the money cause they are tough almost moron proof, and they have great custom service.