HIFI Amp MA500 2.0 Channel Class AB Power Amplifier Original Design 600W+600W - AliExpress
LUSYA 2PCS LJM 200W ONSEMI NJW0302G 0281G DOUGLAS SELF HANDBOOK Audio Blameless Design Class B HiFi Amplifier - AliExpress
Amplification
AIYIMA T9 Pro
Amazon.com: Fosi Audio BT20A Pro 300W x2 TPA3255 Bluetooth 5.0 Home Audio Stereo 2 Channel Amplifier Receiver Mini Hi-Fi Class D Upgraded Integrated Amp for Speakers with Bass Treble Control : Electronics