Musical fidelity M6SI problem.

How many people reported having the problem?  1?

So it looks like it is a problem with the power supply.  Interesting though thag ghe guys thread that the op read, the guy having the crackling issues, had the caps replaced not the power supply.

In my personal experience, musical fidelity has horrible customer service here in the states.

I almost bought a M6i, not the si, and didn’t read any problems about that model...

I should add that my bad customer service issue was about 10 years ago.  Maybe things have changed. It was an issue with one of their dacs.  It was sent out of state for repair, we waited 2 months then my dealer just gave me a new one
I do love their products though.  Their amps look beastly.  
I really liked the look of the M6i, externally and internally.  
I also had a 3.2 (?) cd player years ago and loved that cd player.  It sounded really nice, as did their external dac that I was using. 
Anyhow, I hope you enjoy your new amp!  It should be pretty sweet :-)