Aiyima Audio A04 Tpa3251 Stereo Amplifier 175w Mini Hifi Audio Class Sound Power Amp Treble Bass For Speaker Home Theater Diy - Home Theater Amplifiers - AliExpress
B25C 25 W 1×8″ C-Series Bass Combo Amp - Acoustic Control Corp
Eton MINI 300.2 Class D Amplifier 2 Channel Power Amplifier+Bass Remote Control 4039449004139 | eBay