AA-AB31241 - Sure Electronics - 1 x 400 Watt Audio Amplifier Board - TA5630B Class D
BOSS Audio Systems R1004 Riot Series Car Audio Amplifier - 400 High Output, 4 Channel, 2/8 Ohm, High/Low Level Inputs, Full Range, Hook Up To Stereo and Subwoofer, Class A/B, IC (Integrated Circuit)
RF-5834H-PA101 400-Watt HF Power Amplifier | L3Harris® Fast. Forward.
Amazon.com: Pyle 4 Channel Marine Amplifier - Compact Power 400 Watt RMS 4 OHM Full Range Stereo & Waterproof - Wireless Bluetooth Receiver Audio Speaker with LCD Digital Screen - PFMRA440BB : Electronics
Kicker 46CXA400.1T CX Series mono subwoofer amplifier — 400 watts RMS x 1 at 1 ohm at Crutchfield
THUNDER Series 400-Watt RMS 4-Channel Class AB Amplifier | MTX Audio - Serious About Sound®
Wild Boar By Hogtunes 6.5" Speakers & 400 Watt Amp Kit For Harley Touring 2014-2023 - RevZilla
Kicker CX400.1 400 Watt Class D Mono Amplifier for Car Audio Speakers, Black - Walmart.com
GM-3500T - 2-Channel Bridgeable Amplifier wtih 400 Watts Max. Power | Pioneer Electronics USA
2 Channel Car Stereo Amplifier - 400W Dual Channel High Power Audio Sound Auto Small Speaker Amp with LED Light and Remote Control, Support SD/USB/MP3/FM/Radio - Walmart.com