TDA7498E Bluetooth Amplifier Board 160W×2+220W Subwoofer 2.1 Channel Audio Receiver Power Amplifier Module with Treble and Bass Control for DIY Speakers ZK-HT21 is up for auction in Electronics. The current bid is $5.00, 85% below the $33.00 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.