TPA3116D2 chip is a digital power amplifier chip, power efficiency is more than 90%, with low idle loss characteristics, so the calorific value is very small.The product is suitable for shops to attract customers, home audio and video, and empty squares.Features: It has large sound and excellent sound quality.Package Included: 1 Set TPA3116 D2 120W+120W Dual-channel Stereo Digital Audio Power Amplifier 12V-24V (If the number of products received is incorrect, please contact us . we will refund or give you a replacement)We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Description: Onboard front-facing IC to improve the input sensitivity, high-definition sound quality. The electric capacity is large, the chip capacitor and the bottom plate are soldered with tin, and there is no solder joint on the back of the circuit board, so there is no possibility of causing short circuit. Tips: VCC is the positive electrode and GND is the negative electrode. Do not connect the positive and negative poles of the power supply. Do not use the power and power speakers indiscriminately. 100% brand new and high quality Name: TPA3116D2 Digital Amplifier Board Model: XH-M543 Chip type: TPA3116D2 Working voltage: DC12-26V Output power: 120*2W Max Signal to noise ratio: 100db Channel: Dual channel stereo Quantity:1 Set Size: 92*68*16mm Warm Reminder: Please do not connect the power supply and the speaker randomly after receiving the goods, and refer to the data provided in the product description for reasonable matching. Improper use of power, voltage, and speaker wattage may result in speakers or amplifier boards. Package Included: 1 Set TPA3116 D2 120W+120W Dual-channel Stereo Digital Audio Power Amplifier 12V-24V(If the number of products received is incorrect, please contact us . we will refund or give you a replacement).