Salcon Electronics Premium 4440 Audio Board with Equalizer Board Sanyo IC, Keltron Capicator Double IC 4440 Stereo Amplifier board, High Power up to 100 Watt output( depends on Input supply power, min requirement is 3 amp. Recommended 4 Amp. The best part about the kit is that it is made of individual components, which means if any thing goes wrong it can be easily serviced and components can be replaced. Also all the power supply components are built in, Simply need to add a transformer and it will work. 4440 is a two channel audio power amplifier IC with inbuilt in dual channels enables it for stereo and bridge amplifier applications. Comes with pre integrated Volume, Bass and Terrible controller.