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Amazon.com: XY-S350H 220W*2+350W 2.1 Bluetooth Power Amplifier Board Support Custom Bluetooth Name, 18V-36V Bluetooth Speaker Audio Amplifier Module (XY-S350H) : Electronics
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Amazon.com: Bogen Power Amplifier HTA250A : Electronics
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Amazon.com: Cerwin Vega 500W Class-D 2 Channel Digital Amplifier - Class D Amp, Car Audio System with Advanced Crossover, Remote Bass Knob, and Robust Aluminum Alloy Design for Superior Car Speakers Sound
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Amazon.com: 2.0 Channel 250W+250W HiFi High-Fidelity Audio Digital Reverb Power Amplifier Board : Electronics
Amazon.com: TC Electronic THRUST BQ250 250 Watt Portable Bass Head with Mosfet Preamp and Thrust Compressor : Musical Instruments
Amazon.com: Taidacent OPA549 Audio Power Amplifier 8A Current High Voltage High Current Op Amp with Excellent Output Swing : Electronics
Amazon.com: Q-BAIHE L15DSMD IRS2092S Mono Digital Amplifier Board w/Class D Finished amp Board : Electronics
Amazon.com: Sunbuck Stereo Amplifier Bluetooth 5.0, Stereo Receivers for Home Audio, 2 Channel Max 300Wx2, with USB/SD/RCA/FM, Remote, Home Theater Audio Stereo System Components, Receiver for Speakers, AS-25BU : Electronics