The Kiroandseeu Pam8610 Dual Channel Dc 12V Pure Digital Audio, Per Amplifier. Parameter:Work: D Class Quiescent current: 20mA Efficiency: 90% Rated output power: 10W +10W (8?) response: 20Hz to 50KHz Operating voltage: DC 7.5-15V Recommended power supply voltage: 12V PCB board size: (40 * 40) mm Power Interface: 5.5 socket NOTE: 1. The power supply voltage can not exceed 12V2. The speaker is the 4 lines are completely independent, do not allow a total of access! As long as one of the circumstances, burning IC immediately Package includes: 1x Mini Amplifier Board Product Features Adopts Pam8610 chip, No filter, low static current, EMI, power consumption and heat generating Efficiency: 90%, Rated output power : 10W +10 W (8?) With LED power supply indicator, power supply switch and mute switch, easy to operate Operating Voltage: DC7 5-15v, recommended power supply: DC12V With over-current, temperature, short-circuit protection, hence safe for use 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!