Fosi Audio TB10D 2 Channel Stereo Amplifier, Class D Mini Power Integrated Amplifiers 600W for Passive Speakers/Bass Shaker, Home Audio Component Desktop Amp Receiver TPA3255 with Bass Treble Control

Something like this will work https://www.amazon.com/Fosi-Audio-Amplifier-Professional-Speakers/dp/B08MJBG53V Speaker wire https://www.amazon.com/AmazonBasics-16-Gauge-Speaker-Wire-Feet/dp/B006LW0W5Y

This Fosi is frequently recommended. https://a.co/d/04Ov3vdT

You can buy a cheap 5ghz transceiver pair and a small amplifier to go on the receiving end. Connect the wireless 5ghz transmitter to line level (preferably volume controlled) zone 2 outputs from your receiver, and connect the wireless receiver to the amplifier which you would then connect to your speakers. Examples: wireless transceiver: https://a.co/d/07PbccZ3Amp: https://a.co/d/093G0GwQ Or any amplifier on the receiving end. Something more powerful than the Fosi perhaps.