CamBro
10+ year member
Junior Member
Picked up MTX 421D amp for 25$ from a friend (Steal, I know). I have it hooked up to an 12" MTX thunder 5500. Sounds pretty good. Wondering what would be a sub under 150$ ideally to switch with the MTX I have in their currently. I think this amp is really underrated as far as power too. Id rather get a little too much sub then not enough.
