Tda3116D2 160W X 2 Large Power Digital Auto Amplifier Board Tpa3116 Dual, 24V. This is an audio power amplifier board that strengthens low-power, inaudible electronic audio signals such as the signal from radio receiver or electric guitar pickup to a level that is strong enough for driving loudspeakers or headphones. Power amplifiers make the signal audible to listeners. It is the final electronic stage in a typical audio playback chain before the signal is sent to the loudspeakers and speaker enclosures. Specifications: Chip: TPA3116D2 Input Voltage: DC12-24V Output Power: 100W*2 Input Impedance: 51K*2 Power Efficiency: 90% Output Match: 4-8? Frequency Response: 14-100KHz SNR: 100db Output Channel: Left right dual channel Size: 105 x 65 x 23mm / 4.13 x 2.56 x 0.9" Package Includes: 1 x Power Amplifier Board Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Product Features Digital amplifier has a higher overload capacity than analog amplifier, and it won't cause crossover distortion, transient inter modulation distortion and you don't have to worry about the loudspeaker internal resistance The amplifier chip supports short circuit protection, overheating protection, over voltage protection, under voltage protection and DC fault protection 1.6mm thick PCB board is beautifully and well designed, harder and more durable Comes with a special designed black heat sink which ensures a better heat dissipation Make sure the positive and negative pole of power supply is connected correctly 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!