DIY Class D Audio Amplifier : 4 Steps (with Pictures) - Instructables
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TPA3255 Class D Digital Power Amplifier Board DC 24-48V 2.0 Channel Mini Digital Audio Stereo Amplifier PCB Board 300W + 300W for Audio System DIY Speakers - Walmart.com
Class D 900W High Power Sound Amplifier Circuit Board PCB IRFP260 Mosfet Audio Amp D900 OCP Current Protection DIY TL071 IR2110|Amplifier| - AliExpress
How to Build a High Efficiency Class-D Audio Amplifier Circuit using MOSFETs