Cheap And Discounts -TB22 2.1 Channel Bluetooth Audio Power Amplifier Board TPA3116D2 50W+50W+100W Tweeter Subwoofer Adjustment Module Wholesale. Buy Directly From Merchant ABFN Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.