Features 1、Advanced modulation system configuration to reduce the number of components 2、Integrated self protection circuit, including overvoltage, undervoltage, overheating, DC detection and short circuit protection, heat resistant package 3、The power amplifier chip has the characteristics of more than 90% power efficiency and low spatial loss characteristics 4、With Surface Mount Capacitor, European 3P wiring terminal, large heat sink and convective heat dissipation 5、Suitable for car computer speaker DIY home theater sound system , durable, can be used for a long time, bring a lot of convenience Specification Item Type: Amplifier Board Material: PCB Purpose: Audio Amplifier Model: For XHM543 Chip Model: TPA3116d2 Working Voltage: DC12V to 24V Rated Current: 4.2A (Maximum) Output Power: 2 x 120W Maximum, DC12V 2 x 50W, DC24V 2 x 120W Signal to Noise Ratio: 100db Channel: Dual Channel Stereo Package List 1 x Module 1 x Cable