Cheap And Discounts YS-E100H 2.1 Channel Bluetooth Audio Amplifier Module 50Wx2 +100W High Low Tone Subwoofer Power Amplifier Board DC9-24V Wholesale. Buy Directly From Merchant ABFN Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.