Amazon.com: AK-380 USB SD BT.C FM AUX Audio Power Amplifier 400W+400W 2.0 CH HiFi Stereo AMP Speaker Bluetooth 5.0 Amp Receiver with 12V 5A Power Supply,Remote Control,FM Antenna for Car Home Bar
Amazon.com: AIYIMA A08 Update to A200 TPA3255 Power Amplifier 400W HiFi Class D Stereo Digital Audio Amp 2 Channel Amplifier Bluetooth 5.0 Support APTX-HD for Speaker Home Theater System : Electronics
Amazon.com: Kenwood 500W 2 Channels Performance Standard Series Stereo Power Car Amplifier with 4 Gauge Red Amplifer Kit and Gravity Magnet Phone Holder Bundle : Electronics
Clarion XR5420 Class D 4-Channel 400W Maximum Power Handling Car Audio Amplifier Sound System Subwoofer Speaker Amp with Gravity Magnet Phone Holder and 4 Gauge Kit Red Bundle
Pyle Hydra Marine Amplifier - Upgraded Elite Series 400 Watt 2 Channel Micro Amplifier - Waterproof, GAIN Level Controls, RCA Stereo Input, 3.5mm Jack & Volume Control (PLMRMP1A)
Amazon.com: KICKER Bundle of 2 Items 400W CX Mono Amplifier with Dash Mount Remote Bass Control 46CXA4001T46CXARCT 0 : Electronics
Amazon.com: Rockville RPA5 1000w Peak / 400w RMS (200 x 2) 2 Channel Power Amplifier Pro/DJ Amp : Electronics
Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier
Amazon.com: 1 X 400Watt Class D Audio Amplifier Board Compact - T-AMP : Electronics
BOSS Audio Systems R1004 4 Channel Car Amplifier – Riot Series, 400 Watts, Full Range, Class A/B, 2 Ohm Stable, IC (Integrated Circuit) Great for Car Speakers and Car Stereos
Amazon.com: Pyle 2-Channel Marine Amplifier Receiver - Waterproof and Weatherproof Audio Subwoofer for Boat Stereo Speaker & Other Watercraft - 400 Watt Power, Wired RCA, AUX and MP3 Audio Input Cable : Electronics
Sony XMS400D 4 Channel Micro Amplifier (Black)
Amazon.com: KICKER 46CXA4001T CXA400.1 400w Mono Class D Car Audio Amplifier Amp+Bass Knob : Electronics
Amazon.com: Taramps TS400X4 Full Range 2 Ohm 4 Channel 400W Class D Car Audio Amplifier : Electronics
Amazon.com: Clarion XR5420 Class D 4-Channel 400W Maximum Power Handling Car Audio Amplifier Sound System Subwoofer Speaker Amp with Gravity Magnet Phone Holder Bundle : Electronics
Amazon.com: MTX MUD100.4 Mud Series 400 Watt RMS 4 Channel Class D Compact Weatherproof Outdoor Powersports ATV UTV Motorcycle Sound System Stereo Amplifier Kit : Electronics
Amazon.com: Rockville KRYPTON F1 1600w Peak / 400w RMS 4 Channel Amplifier Car Audio Amp : Musical Instruments