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Amazon.com: Arylic WiFi&Bluetooth 5.0 Home Audio Amplifier with 50+50W 21V DC/2.0 Stereo Channel&Mono,multizone Streaming Amplifier Board with Airplay,Spotify Connect for DIY Speakers Board- Up2stream Amp V4 : Electronics
ARYLIC UP2STREAM MINI V3 Bluetooth 5.0 WiFi Receiver Board DLNA UPnP AirPlay - Audiophonics
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Up2stream Pro V3 WiFi&Bluetooth 5.0 Stereo Receiver Board/Module for DIY Speaker - YouTube
Up2stream WiFi and Bluetooth5.0 HiFi Stereo Class D digital multiroom 24V DIY audio music usb power amplifier dac board kit - AliExpress Consumer Electronics