The DMT215 specs out at 101db @ 1w 1meter. That's pretty efficient so I'd say it depends how loud you like to listen and in what size room. If you like to listen at high volume in a large room I'd advise against it- the temptation to turn it up louder will be too great. In a smaller room at moderate levels you should be fine. I'd keep an eye open for a more powerful amp either way- you may not be happy with the bass articulation using the amp you have- by the time you can hear clipping it may be too late.
