limniscate:
Thank you for the report. I believe the fuse location you are evaluating is in the Magniplanner speakers. I hope you will be able to try the Synergistic Research fuses in your amp, pre amp, or source.
So in Magniplanner speakers we have two positive results using Synergistic Research RED or BLACK fuses and on listener with no improvement.
Oregonpapa:
That is some special piano music you have been listening to!
David Pritchard