@lordmelton I found out that you can over-do it with the Master Fuses.
As Ted says, you get the best result with the use of Master Fuses in your source equipment and Purple fuses in the rest of the chain. The Master Fuses primarily emphasize the high frequencies in an amazing way that produces certain details in spades. The Purple fuses are about full mids, mid-bass, and top end freqs up to a certain point. The Master Fuses can bring out details which the Purple fuses cannot, but they can be over-used. I’ve now tried replacing three small Purple fuses in various locations in my digital front end with Master Fuses, along with two large Purple fuses in my amp with Master fuses. My system sounds much better with two Purple fuses left in the amp (along with Purple in my preamp). The large fuses with more crystals inside and more UEF goop on the exterior have a bigger effect.
For anyone wondering, I hope this helps. IMO, the Purple fuses represent great value. The $600 Master Fuses are excellent at the highest frequencies, but they need Purple fuses in the downstream analog equipment to be in overall balance.