ITEM NAME:TPA3116D2 50Wx2 +100W 2.1 Channel Digital Subwoofer Amplifier Power Module V6L7 Description: Features: Using High quality tpa3116d2 digital power amplifier chip. With good sound quality, high efficiency, strong power amplifier. 50W * 2 + 100W with 2.1 channels (left / right channel and heavy bass track), high efficiency and low heat. Adopt DC 12-24V driver, wide voltage input. Users can easily adjust the volume. Just connect the power and speakers that you can enjoy pure digital music. Specifications: Speaker impedance: 4-8ohm Supply voltage: DC 12-24V Chip: tpa3116 * 2 Channel: 3 channel (left, right, bass) Output power: 50W * 2 + 100W * 1 subwoofer Output matching: 4-8 ohm Audio output: terminal Frequency response range: 14-100khz SNR: 100db Switching frequency: 1.2mhz Size: approx. 100*92*28mm/3.93*3.62*1.1'' Net weight: approx. 118g Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Included: 1 x Digital Subwoofer Power Amplifier Board Module 1 Set Screws.Using High quality tpa3116d2 digital power amplifier chip. Output power: 50W 2 + 100W 1 subwoofer. 1 x Digital Subwoofer Power Amplifier Board Module. With good sound quality, high efficiency, strong power amplifier.