Damgoo Bluetooth Amplifier Board For Diy Wireless Speakers Board, 100W 100W Peak Product Features Output Power: 100w+100w Output Power, Wide Voltage Input: 5V-24V, Can Be Powered by 9V/12V/15V/19V/24V. Adapter speaker 4-8? (50w-150w) Bluetooth 5.0: User Can Directly Connect with Wireless Bluetooth 5.0 without Password Easy Installation and Short Start-up Sound: The Illustration Of Each Interface Is Printed On The Protective Plate, Making It Easy To Install Even Without Instructions. The Sound of The Amp Board To Start And Connect To Bluetooth Is Short Rather Than Not a Asian Woman's voice. Protective Function:This BT Amp Is Designed with Protective Case, Over-heat Protection, Short-circuit Protection Note: Please Use A Power Adapter With Sufficient Power To Connect The Amp Board, Otherwise The Sound Will Be Distorted. And Make Sure The AMP Board Is Away From The Wifi Signal. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!