ITEM NAME:XH-M139 TPA3116D2 2.1 Channel Digital Subwoofer Power Amplifier Board gh TRK Descriptio n Description: Voltage: 12V ------- 8 Ohm Speakers / 12W (Left Channel) + 12W (Right Channel) 4 Ohm Speakers / 20 (Left Channel) + 20W (Left Channel), 15V ------- 8 Ohms / 18 + 18W, 4 Ohms / Greater Than 30 + 30W, 19V ------- 8 Ohms / 32 + 32W, 4 Ohms / Greater Than 45 + 45W, 24V ------- 8 Ohms / 38 + 38W, 4 Ohms / Greater Than 55 + 55W, Output Power: 50w*2+100w Subwoofer*1 Output Load: 4-8ÃŽ © Frequency Response Range: 14-100KHZ Number Of Channels: 3 (Left Channel + Right Channel + Subwoofer) Switching Frequency: 1.2MHZ Specifications: Color: Red Product Size: 10*8.5*3cm Supply Voltage: DC12-24V Package Included: 1*2.1 Channel Audio Digital Power Amplifier Board Note: 1.Due To The Manual Measurement And Different Measurement Methods, Please Allow 2-3mm Deviation. 2.Please Be Reminded That Due To Lighting Effects And Monitor'S Brightness/Contrast Settings Etc, The Color Tone Of The Website'S Photo And The Actual Item Could Be Slightly Different. We offer you what you need! XH-M139 TPA3116D2 2.1 Channel Digital Subwoofer Power Amplifier Board.Number Of Channels: 3 (Left Channel + Right Channel + Subwoofer). Output Power: 50w 2+100w Subwoofer 1. 1 2.1 Channel Audio Digital Power Amplifier Board. 12V ------- 8 Ohm Speakers / 12W (Left Channel) + 12W (Right Channel) 4 Ohm Speakers / 20 (Left Channel) + 20W (Left Channel).