MTX AUDIO Thunder3404 4-channel car amplifier 50 watts RMS x 4

50 watts RMS x 4 at 4 ohms (100 watts x 4 at 2 ohms). 200 watts RMS x 2 bridged output at 4 ohms (4-ohm stable in bridged mode). speaker-level inputs with Smart Engage. requires 8-gauge power and ground leads — wiring and hardware not included with amplifier.

eBay