Differential Amplifier Board 5Wx2 Digital Class D Stereo Audio Power Amplifier HT8698 DC 3.3V 5V - Digital Amplifier Module - Arduino, Robotics, Raspberry Pi, ESP8266, Learning DIY, Development board ICStation
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Stereo 2.1W Class D Audio Amplifier - TPA2012 : ID 1552 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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