Yamaha WXA-50 – Alexa compatible wireless streaming amplifier with Wi-Fi and Bluetooth – Black: Amazon.co.uk: Electronics & Photo
Amazon.com: Fosi Audio BT20A-S Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver Mini Hi-Fi Class D Integrated Amp 2.0 CH for Home Speakers 100W x 2 with Bass and Treble Control TPA3116 (