Just want to share my opinion with the upgrade of my amp – Musical Fidelity M6Si.
First of all – John Sampson is a brilliant tech-guy, he knows the MF products in details and knows their weakness.
After contacting John we clarified the upgrade – 10-15 emails and I decide to make upgrade Stage 3.
It took a little bit more time but it was worth the wait.
Now my amp sounds brilliant – more natural, more powerful, the sound is amazing!
It’s a keeper for a long time!

Petar Karageorgiev