The diyAudio Store - DIY amplifier kits, chassis, and parts
Rapid 2.5W Stereo Amplifier Kit With Speakers | Rapid Online
Diy Kit A1943/c5200 Tube Amplifiers Audio Board Dual Ac12-28v High Power Amplifier Board Stereo Hifi Amp - Home Theater Amplifiers - AliExpress
HiFi Class A Vacuum Tube Power Amplifier Stereo Integrated Audio Amp DIY KIT | eBay
2.1 Channel Subwoofer Power Amplifier Module DIY Kit 50Wx2+100W Treble Bass Control DC 12-24V BT Audio Amplifier Board Stereo Speaker Digital Amp for Audio System - Walmart.com