Infinity Reference 3004A 4-Channel Car Audio Amplifier 1000W RMS

Rockford Fosgate Punch 4-Channel 400W RMS Car Audio Amplifier 2417298

Open box - Infinity Reference 3004A | 75W 4-Channel Class H Amplifier (Open-box)

Zapco Z-400 / MPN Z-400 4-Channel Car Audio Amplifier 1000W RMS

Banda Audiopart BD-400.4 4 Channel Amplifier Car Audio - 400W RMS 400 Watts RMS

Infinity Reference 3004A 4-Channel Car Amplifier 100W RMS x4 at 2 Ohms

Clarion XR5420 Class D 400W RMS 4-Channel Motorcycle Amp Car Audio Amplifier