I wanted to replace the fuse in the DSD since I’ve got the top open to install an iQSE but all I have on hand is a SR 2A slow blow. How risky is it to replace the 1A in this spot with the 2A? I typically don’t ever replace anything other than the excat value but since I had the 2A on hand I thought I would ask for expert advice.
Thanks!
Ian
ihmeyers saidI wanted to replace the fuse in the DSD since I’ve got the top open to install an iQSE but all I have on hand is a SR 2A slow blow. How risky is it to replace the 1A in this spot with the 2A? I typically don’t ever replace anything other than the excat value but since I had the 2A on hand I thought I would ask for expert advice.
Thanks!
Ian
Thanks for reaching out to us about this.
It definitely NOT recommended. Installing a 2 amp fuse in the DSD DAC would force the unit to allow 2 amps to pass through the circuit before blowing instead of just 1 amp. In the event of an internal failure this could potentially damage the internal components further. If you like, we are more than happy to get you a replacement fuse at no charge. Please contact us at service@psaudio.com with your address and we’ll get you taken care of.
Thanks again,
Thanks VERY much for the response Jeremy! No, I will order a SR 1A fuse. No problem. Since I had the 2A around I thought I would ask. Glad I waited for an answer. Thanks for getting back to me so quickly.
Best,
Ian
May I be so bold and ask what “iQSE” is ?
Of course!
Information from the designer is here, toward the bottom of the page.
Did the iQSE make a noticeable positive change? I’m thinking of trying one?
The correct fuse would be a 5x20mm slow blow 1A correct? I’m assuming this made a noticeable difference? I have SR on all my AMPs but never thought of my DS, I’m ordering one now. Where is the placement for the fuse exactly.
Thanks
S
I hate to be a party pooper but have to admit that my bull detector just peaked…
Fuses definitely make a substantial difference in the background noise in AMPs even when using my PS5 & AC 12’s.
It’s extremely noticeable.
Seth
Frode said I hate to be a party pooper but have to admit that my bull detector just peaked....Understandable. As with fuses, and the bulk of other tweaks, it is hard to set aside the suspicion this is marketing to the gullible.
Jeremy B saidSame issue with using a @2A fuse with the DMP? That's rated for 100V and 2A and 120V and 1.6A. Again, I wouldn't ask other than I have a 2A SR Red just sitting around.It definitely NOT recommended. Installing a 2 amp fuse in the DSD DAC would force the unit to allow 2 amps to pass through the circuit before blowing instead of just 1 amp. In the event of an internal failure this could potentially damage the internal components further.
Thanks,
Ian
For anyone interested… Just spoke to Jeremy. He said the 2A fuse is close enough for the DMP.
Once again, outstanding customer support from PS Audio. 
Frode saidI hate to be a party pooper but have to admit that my bull detector just peaked…
Yes. I would prefer a description which states “we do not really know how it works, but we think it may do X,” or just leaving it at we do not know.
Given that Bybee has been flogging his magic devices for many years, isn't it amazing that the world just hasn't caught on to how awesome they really are? Perhaps there is a reason for that?
His products have received excellent reviews for years in many publications. People are obviously buying the products or his company would not still be around. Plus, other manufacturers have licensed various technologies from him. Just like cables, they work well in some systems, not in others.
Consider that the explanations as to why various cables work range from fairly rational to completely nuts and, given the huge range of products and approaches what truly works remains quite mysterious. Yet, many pay hundreds and thousands of dollars for a single meter pair because they find they work - regardless of the explanation. Non-audiophiles find this absolutely ridiculous which, of course, it is.
I don’t know of any manufacturers who incorporate the Bybee stuff, which I view as a strong indicator. I have yet to come across anyone who found Bybee products useful, aside from a few Reviewers, many of whom seem to be describing confirmation bias.
Almost all reviews read as describing confirmation bias. And there are many innovations which are not routinely included in manufacturers’ products. Fancy wire, fuses, vibration control - all sorts of things are not standard, although a few do incorporate them. Bybee products are no more silly than these.
If you are curious, The Cable Company sells Bybee products and includes them in their home audition lending library.
Remember, expectation bias goes both ways. 
Well, here’s one take on his products: http://www.eetimes.com/author.asp?section_id=1&doc_id=1284675
“So what do the results show so far? The first round of testing has been completed and the results are due out momentarily, but early word is that there’s “no real difference between one of these [devices] and an ordinary 0R025 resistor.” What a surprise.”
The link in the article leads to a 101-page thread on the topic…
Yes, there are varying opinions. So what?
If one is disinterested and unwilling to consider tweaks which may improve the sound of a system this is fine. I suggest only keeping an open mind.
I am certain your Google search led you to all of the positive reviews as well. Perhaps you should post these also.
My understanding is that PS Audio products come from the factory with fuses that its designers have found to sound best with their products. That’s the way it should be. I feel cheated if I have to research, acquire and try different fuses on my own. Of course, if fuses are system and taste dependent, like cables, then no manufacturer can select “the best” fuse for every system and trial and error becomes necessary.