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Isoclean fuses: definitely worth it

I just installed Isoclean fuses in my Naim CD5x and Nait5i. I sort of felt like I was going to the fringe by installing these but keep in mind they are right in the AC path so it made sense to me after installing a dedicated line and an "audiophile grade" AC receptacle.

I tried Buss ceramic fuses beforehand and they were just slightly better than stock.

The Isocleans, however, definitely provided a noticeable improvement over stock or Buss ceramics. In a nutshell: smoother treble, a touch more overall resolution (especially in the mids and treble) and elimination of a bit of grain and veiling. Polarity does matter. I checked a few times to verify but arrow down for my equipment was more natural (less bright) than arrow up. You may prefer the other polarity, of course. Note that they didn't affect rhythm as many products do (especially a lot of isolation devices) nor did they add any brightness (at least in the polarity I prefer).

They're not cheap for what they are ($25 per fuse) but the improvement was definitely worth $50 total investment to me.
greg7

Showing 2 responses by jadem6

jadem6's avatar
jadem6
1,074 posts
 
I have been following this and similar threads about which fuse is best, and most often feel I'm reading a re-run of power cables from five years ago. Of course fuses make a difference, as do other components we have not yet thought of. Both fuses are a great improvement from standard Radio Shack Littlefuse... Of course personal experiences will differ based on equipment used, power cords, dedicated circuit design, conditioners, outlets... Every step in the power supply chain has an effect, and the quantitative sum of these efforts will be the net result. Isoclean may better HF tuning or not. The argument is mute until you understand the entire chain of affecting components.

Why must we always be right?

How about this, fuses make a difference, it's logical and the degree of affect will vary so try both, and choose for yourself. They both cost $25-30, so they both have 1000x mark-up, so does everything audio!

What I would like to have discussed is the fact that Isoclean claims (in the owners manual) you will need to replace their fuse every six months due to degradation of the fuse. Is this true with HF Tuning literature too? Does this not concern anyone using Isoclean?

JD
jadem6's avatar
jadem6
1,074 posts
 
So if I read all this right, the fuse replacement is more a sales ploy than a fact. The sound will improve by replacing the fuses at around six months, but this would be true in any situation because of corrosive buildup on the fuse and or the holders. Cleaning the fuse every time I change my clock with day light savings will solve this issue.

I tend to not agree with the fuse degradation or my 35 year old Marantz tuner would have surely died by now. Or Grandpa's '50 Scott amps would would certainly have died. No the fuse I believe will not degrade to a point of needing replacement or we would see this problem more often.

I do think fuses matter however, I just don't buy Isocleans comments. This type of comment tends to make me shy away from them as a company, for they can not be fully trusted???

Jade
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