Kicker 45 Key 180.4 4x50 watt 4-Channel Full-Range Smart Amplifier

KICKER KEY200.4 4-Channel 200W RMS Car Audio Amplifier/DSP

KICKER Key Smart 180W 4 Channel Smart Amplifier

Open Box Kicker 47KEY2004 Smart 4-Channel Amplifier W/ Auto-EQ/Processor,

Alpine KTP-445 Power Pack Car Amplifier 45 watts RMS x 4 Used Alpine Car Audio

Kicker DXA250.4 4-Channel Car Audio Amplifier Car Audio Amp 41DXA2504

Kicker 51KPX3004 KPX300.4 4x75W Powersports Motorcycle Amp - Open Box

Alpine KTP-445 Car Amp