PRV Audio QS400.4 2Ohm Compact 4 Channel Digital Class D Full Range Car Amp 400W

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4 Channel Car Amplifier Class D 4x60W RMS Compact Audio Amp

Compact 400W 4-Channel Car Audio Amplifier

Sony XMS400D 4-Channel Class D Compact Car Audio Amplifier 400W Peak Power

Pioneer - GM-DX104 4-Channel 400W Max Class D Amplifier #U5664 (AR)

Audiopipe APMCRO-4060 Micro Full Range 4 Channel Class-D Car Amplifier 4/8 Ohms