Aftermarket fuse to tame a bright system?

@gavin1977

Yes, the Harmonic Technology cable gives me all of the sound qualities that you mention with my current gear.  Linear Tube Audio MicroZOTL preamp, Coda amp, Innuos Zen Mk3 streamer, etc. 

It was recommended by a rep with the Cable Company. The first time I tried it with my previous preamp, I didn't care for it. I felt that I was missing some top end. On a whim, I got it out along with the DH Labs cable and tried it. I'm very happy with the results. 

I experimented with three different brands of pure silver cables that I bought used for a couple hundred dollars each. At first, I was impressed, but eventually decided that the top end was detailed, but too bright.  Changing tubes in my preamp helped, but didn't solve the problem. 

I'm now using a Harmonic Technology RecTa oc between my amp and preamp and a DH Labs Air Matrix between my dac and preamp. I also use the DH Labs Air Matrix between my sacd player and preamp.  I'm happy now. 

@gavin1977

I have two Synergistic Research cables (Kaleidoscope and Looking Glass) and an older XLO Ultra cable.  I do seem to lose some sq with those.  I also have a Morrow Audio MA-5.  No real complaints about it.  I have Core Power Technology Diamond cables.  They aren't bad.  

I think it's all about system matching.  I thought I had wasted my money on the Harmonic Technology cable.  It's been sitting in it's box for a while.  

The DH Labs Air Matrix is very good, too.  At least it is in my system.  

I haven't tried any super expensive interconnects.  My speaker cables were $1500, but I haven't spent nearly that much on ICs.  I like how my system sounds now, so I probably won't try more cables. 

@bolong

I tried several tubes in my LTA MicroZOTL preamp.  Telefunken, Siemens, Brimar Yellow T, Philips, etc. The Telefunken are the more detailed/bright of the bunch, but they sound the best in my opinion.  They didn't play well with silver cables.  I ended up not using any of them. 

Gustard sells a $25 fuse for their dacs, etc.  I don't know if they'd make much difference, but i guess it can't hurt.  I've got one in my dac, but I pretty much popped it in and forgot about it.  Never did any critical listening to see if it helped.

@gavin1977

That's interesting.  Definitely not how Gustard describes the resultant sound.  Maybe some day, I'll put the original fuse back in and see if there is any difference.  I'm inclined to think that there won't be much difference.

@gavin1977 ​​​​​​

I bought a used pure silver cable (Apature Accusound BL-4) that I found on eBay. I replaced the Harmonic Technology cable with it and it has added some additional detail, but not overly bright.  After listening to the Harmonic Technology cable with a bigger variety of music, I noticed that some songs sounded great, but others were duller than I had remembered. The silver cable between my amp and preamp with a DH Labs Air Matrix between my dac and preamp seems to be a good compromise.  I tried a DH Labs Air Matrix between my amp and preamp with another of them between my dac and preamp, but the silver cable seems to work better.  

I apologize if I mislead you. I think the Harmonic Technology cable would be good if a person's system was on the bright side of neutral.