It's only rated at 40wpc. That'd be enough reason for me not to buy it.
Right, but as CV alluded to, I don't think this is designed to be the driving force in a dedicated home theater room.
It says it's designed to be a rack-mounted, multi-room amplifier. That's for a whole-house audio system. In that sort of setup, 40w/channel is perfectly adequate to drive pairs of smallish in-wall speakers in various rooms at soft to moderate levels. You wouldn't need 100+ watts/channel for that sort of application.
Think background music in the library, kitchen, or bathroom. Not rockin' out in the HT room.