Great amps for the money. Excellent for a basic interior system. Check out the XXD5080. We have used this many times to run 4 speakers and a sub for a basic system. The XXD1500 also puts out a good amount of power and is an excellent budget alternative to the PDX-1.600.
XXD4080
Old technology and new technology
XXD5080 Adjustments
XXD5080 Terminals. All XXD amp terminals, and logo light up.