I would be interesting to know why an amp with the power/current specs of the MF X150 is recommended for use only with speakers with sensitivity of 88dB and above. I read this doing a Google search for this amp.
I owned the MF A300 dual mono (150 @ 8 ohms & 260 @ 4 ohms) and the manual recommended similar speaker sensitivity parameters. In my room, MF seemed to struggle with my then Dyn Audience 70s (4 ohms & 86dB) and its power delivery never felt relaxed when pushed. My current amp which is a Citation 7.1, was a far better performer with the Dyns, IMO. The Citation has specs which are very similar to the MF A300 integrated amplifier.
Just curious.:)
Jet