Alpine S2-A36F, S Series 4-Channel Class D Hi-Res Full Range Amplifier - 360W

Alpine S-A32F, S Series Class D 4 Channel Digital Amplifier, 320 Watts

Alpine KTA-450 4 Channel Amp with Dynamic Peak Power 45W RMS x 4 At 2 Or 4 Ohms

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

Alpine BBX-F1200 4-Channel Car Amplifier | 600W Max Power | High/Low Pass Filter

Alpine S2-A36F S-Series 4-Channel Amplifier

Open Box Alpine S2-A60M S-Series Next-Gen 600W High-Performance Mono Amplifier

Alpine MRV-F450 V12 Series 5ch Car Amplifier 850W Max Bridgeable JDM Power Amp.