HEOS AMP - 2 Ch. 100W Amplifier with HEOS® Built-in | Denon - UK
Roxel AMP-150BT Amplifier for 2 Channel Wireless Stereo Audio Amplifier Receiver, Mini Hi-Fi Amp for Speakers up to 90W x 2, with Bass and Treble Control, Wireless Streaming for Passive Speakers: Amazon.co.uk:
Re-using old wired speakers for streaming and TV : r/audio
Sonos AMP | WiFi Streaming Amplifier, 2.1 Channel, 250W | Audio Volt — Audio Volt