HERTZ HCP 4MDKHERTZ (HCP 4MDK) 4MDK 250W X 4 @2 OHMS D CLASS 4 CHANNEL AMPLIFIER New HCP 4MDK features latest generation D Class 2 stable output stage reaching the impressive power RMS of 150 W x 4 with the excellent S N ratio of 105 dB. Extremely versatile, complete in its functions, provided with Speaker In and RCA In inputs to work with any head units, it has been designed to work also in mono (selectable mode), providing the ability to build a two zone stereo