I'm in the middle of wrapping up installing a few upgrades & discovered one of my amps keeps going into protect. I know it's not wiring or anything as it's been installed for over 8 years...so it's just time I guess. It's a PPI Phantom 900.4 that's powering my Mid-Bass & Rear Fill. I also have another one powering my Tweets & Mids. I'd like to replace it with something of similar power....maybe 150-200x4 at 4Ohm as I don't want to re-wire anything...just drop in a replacement. However, I could also just move the one thats working over to those speakers if anyone has a used amp that is more SQ focused that I could pick up to power my tweets & mids. In other words just show me your wares!!