get it here: https://www.amazon.com/gp/product/B07PL6LDP1/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=htk231-20&creative=9325&linkCode=as2&creativeASIN=B07PL6LDP1&linkId=3ee733e0e8133b9347
Review and audio test of #XYS350H #TPA3251 220WX2+350W Bluetooth 5.0 Subwoofer Amplifier Board 2.1 Channel Power Audio Stereo #classD Amplifier Board Bass AMP.
You can buy it