**USED** but still working/durable- I upgraded my entire car recently and no longer need this. KENWOOD has a strong reputation for its products. I have previously sold audio equipment before and have had great reviews/ feedback. Built for high performance yet affordably priced, the Kenwood KAC-729S amplifier will rock your speaker system! Kenwood builds in MOSFET power supplies, extra-large capacitors, copper-shielded EE core transformers, and toroidal noise filters so that you get mammoth reserves of ultra-clean power. The strikingly rugged exterior will add a stylish touch to your installation, while the built-in low-pass crossover (80 Hz at 18 dB/octave) is handy when you're pushing subwoofers. Use the speaker-level inputs to connect to a factory radio (or any receiver without preamp outputs). Details: stereo or bridged mono output Tri-way capable (Tri-Way crossover required) 300 watts x 1 in bridged mode 150 watts x 2 at 2 ohms requires 8-gauge power and ground leads — wiring and hardware not included with amplifier