a nice classic looking base amp containing 4x HG 2sc2879 transistors. This 4 transistor amp packs a punch. Great as a stand alone amp or a driver box. Comes equipped with 100 amps of power supply inside to run the unit flawlessly. Comes with a large heatsink that’s only 2 inches shorter than the whole circuit board. to keep things nice and cool!!! @ large fans to keep that air moving. This unit can be made in class C for am or biased for ssb as well. The ideal settings for this product should be 100 watts max carrier from amp and 100 peak watt input max