Best 4 Channel Motorcycle Amplifier

Kenwood KAC-M1814 Compact 4-Channel Digital Amplifier for Car Grey

Rockford Fosgate M2-300X4 Marine 300-Watt 4-Channel Element Ready Amplifier

BOSS AUDIO R2504 Riot 1000-Watt Full Range, Class A/B 2-8 Ohm Stable 4 Channel Amplifier with Remote Subwoofer Level Control

Taramps TS 400x4 400 watts RMS 4 Channels Full Range Car Audio Amplifier, 2 Bridged Channels, RCA Input Class D, Output Power, Multichannel Amplifier System, Small

Kenwood KAC-M5024BT 4 Channel Digital Powersports/Marine Amplifier

PIONEER GM-A6704 4-Channel Bridgeable Amplifier with Bass Boost, Black/Red

KENWOOD KAC-M5014 4-Channel Compact Digital Amplifier (600W) for Car, Marine, UTV & Motorsport Vehicles, Solid Corrosion-Resistant Aluminum Chassis, IPX6, IPX7 & IP6X Certified and Vibration-Proof

Rockford Fosgate TM400X4AD Power Marine Amplifier, 400 Watt 4 Channel

Rockford Fosgate PBR400X4D 400 Watt Full-Range Punch Compact Chassis 4 Channel Amp Amplifier

Rockford Fosgate M5-800X4 IPX6 Element Ready 800-Watt 4-Channel Marine Amplifier with Dynamic Power