What Musical Fidelity products are you talking about Bo1972. A few years ago, I tried a MF A3.5 integrated. I was very surprised with it. No question that is is a very powerful amp. It will drive just about anything. Also, the sound was very fast. If you like what the Naim does with the quick pacing or PRAT, the MF did it better. In my opinion, though, it went too far. The highs were a bit harsh and there was no body or fullness to the sound. Kind of like old Krell but without the good midrange. Not 2D but not 3D. Maybe 2.5D. I thought I would like it but it was just OK. Not great. It was one of the first units to come from Asia and not the UK. Maybe that was the problem.