2 offers · 1 retailers

Newavro ZK-TB21 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board

TPA3116D2 HiFi Treble and Bass Control Stereo Digital Audio Amp Board for Home Theater DIY Speakers

These listings share a model number but no barcode, so they may not be the same product. No saving is claimed; check each retailer before you buy.