In making yourself a car audio power amplifier, the difficult part is to make the switching power supply. Audio amplifiers are more easy to assemble. You can choose any audio amplifier circuit and then match them the suitable switching power supply to get a good car audio power amplifier.  

We take order of your switching power supply modules.  You just have to e-mail us the specification of the switching power supply needed for your audio amplifier schematic. The switching power supply can be made with or without heatsinks.