Flexability of six channel configuration, power, clarity.

Cost.

I have this amp in my car currently driving a custom installed MB Quart three way front system: QSD 6.5s Kickbass, PCE 4in. mids, and Psd tweeters. The sound is loud and clear. Amp has slots for accessory modules that I don't think are needed. It has the flexibility for almost any configuration. Plenty of power for hard to drive speakers. Great Amp!