What's the mixer? If you're going from a mixer, with pre-amps to this power amp you don't need powered/active reference monitors, you can get passive monitors. But you want to look into accurate passive studio monitors and not standard stereo speakers which generally add a lot of color to the sound. Buy the same token if you buy a good set of active studio monitors your probably don't need the power amp. Behringer would not be a first choice for me on any audio equipment.