I still have quite a bit left IME after treating four interconnects and two sets of loudspeaker cables (one set with bi-wiring terminations)...
When I first applied it to just one pair of ICs, the sound went a bit “dark”...this is apparently a common effect during break-in period. The high frequencies seemed softened, as did the dynamics to some degree. As such the overall volume lessened.
By the end of day one the dynamics had come back to a good degree as did some/most of the highs. It took two/three days for everything to come back fully, though the sound had changed and for the better.
Continuing to apply to the other ICs and speaker cabling, there was again a bit of the dark sound signature for a couple of days, each time with increased results.
What was apparent from day one application was a difference in the soundstage coherency. It sounded more solid and dimensional even with the transitory darkness playing out.
The end result was a fuller, more dimensional and coherent soundstage with a sweeter top-end. The dimensionality aspect was also apparent at lower listening volumes.
I do not have any Mc.05 in my system.