The 500ASP combines a highly efficient and powerful switch mode power supply with an audiophile 500 W class D amplifier. The amplifier section is essentially the same as the 500A module. The power supply of the 500ASP includes a DC hanger bus output, which can be used for powering additional 250A or 500A modules. This makes it very convenient to create 2 and 3 channel amplifiers, combining the 500ASP with the 250A and the 500A.