Yeah, I have the MPS-2, and it is a great amp. The build quality is excellent. And, of course, it sounds great: Excellent Crosstalk, Low THD, Flat Frequency Response, and Low Output Impedance. Highly recommended.
The Emotiva Pre-pros and preamp on the other hand, might not have excellent crosstalk (channel separation), but the THD+N, frequency response, and output impedance are still excellent.