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Best Choice Blaupunkt 
Blaupunkt AMP1404 Car Audio 4-Channel Amp Amplifier 1500 Watts Max Peak Power with Gravity Magnet Phone Holder Bundle Amplifier Class: AB / Channel: 4/3/2 ChannelPLINIUS 
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BOSS Audio Systems R3002 - Riot 600 Watt, 2 Channel, 2 4 Ohm Stable Class AB, Full Range, Bridgeable, Mosfet Car Amplifi High and low level inputsGeneric 
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Includes a remote controlRoutledge Immersive Sound: The Art and Science of Binaural and Multi-Channel Audio Immersive Sound: The Art And Science Of Binaural And Multichannel AudioFosi Audio Fosi Audio BT30D Bluetooth 5.0 Stereo Audio Receiver Amplifier 2.1 Channel Mini Hi-Res Class D Integrated Amp 50 Watt x2 BT30D wireless stereo amplifier adopts 2 pcs Texas Instruments TPA3116D2 chip. 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