I don't know how it compares to the Rane MA-6S that I have...
...the MA-6S is a 6 channel, 150wpc unit. It has a pretty heavy inrush current. I don't know if it can support running all channels full out for any length of time, or even at all. (We're not really going much over 15% on any channel at any time.)
The price is excellent; depending on your needs, the amp may or may not be.