The MD series was primarily designed for internal or external car audio systems, whether small, medium or large. Developed with high technology and sophistication, this group of amplifiers is amazing. Mostly full range, which is to say, with a wide frequency response, these modules run subwoofers, woofers, drivers, tweeters, among others. Finally, the MD series has a wide variety of 1 channel models , with power from 250 Watts RMS to 12000 Watts RMS and impedances from 0.5 ohm to 4 ohms, delivering high performance from bass to high frequencies.