Another way to say this is… During a 'normal' turn on, the inrush current is usually much more then the normal run time current demand. So, slow blow fuses are usually chosen because they 'allow' (for short periods of time) greater current flow than their 'rating' would suggest. This also works...

It took me 200+hrs for my PurpFuse to 'sing'. And during the 'break-in' period, the SQ would shift all over the map, and in every possible way (dynamics, mids. bass, highs, soundstage etc.), and all of these shifts would mix and match (or not). I'd suggest a rematch well after 200hrs of playing...

Just curious as to how many hours of playing time are on these fuses? Thanks JJ

Yes, that should do the trick. You should also be able to find non medical grade transformers, which should cost less. And if you're handy with DIY, the core transformer can be found for well under $100. JJ

One possible solution for 'noisy' ac power is to use an isolation transformer or a much more expensive power conditioner. One advantage to using an isolation transformer is the output is 'balanced' (±60VAC) as this can also yield a SQ improvement in and of itself. JJ

Realistically only you will be able to determine where the greatest improvement will occur, and by how much etc. And it may not be that either one or the other will be the greatest improvement but that the accumulation of improvements could be the the greatest change and most gratifying. This is...

Can you hear any differences between the 3 gain settings at the same or nearly so, volume? If so, use the setting that sounds 'best'. If not, it doesn't matter. JJ

This 'trick' of making sure the clamp screws and the ends of the 12awg wire are optimally setup is a 'simple' tweak that in some cases can solve a whole mess of 'quirks'. All it takes is for someone (previous owner?), at sometime, to run a circuit, where the clamp screw was slightly loose, with...

Yes, I saw Caelin's videos and white papers as well. So I purchased an ASCC (Available Short Circuit Current) tester and performed several experiments using several types of power delivery and several different cables and duplex receptacles, and then measured the actual current draw into a 'test...

I have looked into these and other related issues and have written up my findings, if interested, look at my sigline and follow the link(s). Bottom line is, it's not the voltage fluctuations that are really important, as it is the ability to deliver current in small regularly timed pulses that...

AKA Deep, weekend long, Cryogenic treatment… 😎 JJ

One of the more plausible 'explanations' for why fuses can make a difference is… As ALL of the power that is used by our audio devices is channeled into a single 'short' chunk of wire or 'fuseable link', it will change it's operational characteristics. As our devices demand current be drawn...

The frequency response measurement itself is still a 'static' measurement, which is unlike music. We are talking subtle nuances of phase and other circuitry response characteristics (slew rate, overall phase response, as well as possible impedance mismatches etc), due to the constantly changing...

Just an added thought to consider. The fuse direction that you use, if 'backwards' will take additional time to 'undo' before the fuse will reach optimal SQ. This comes from experience. JJ

Have you accumulated close to 200+hrs yet? If not, I'd use the 'go with the flow' technique. That being, the current should flow thru the fuse in the direction of the wording on the fuse itself. Then decide… JJ