As a matter of course, I’ve always upgraded from stock fuses. Many here have done the same. I’ve been through a bunch of them…multiple SR colors and Audio Magic M1 and M2 of late. Last week I put in the M2’s in the PMG trio.
Yuk. Everything was closed in, lifeless. I usually experience an initial positive bump with most changes, but not here. Several days passed, no dice. On the sixth day the heavens opened and everything sounded open, alive, and more palatable than before. Whew. Patience is not just a virtue but a requirement in this hobby. Lessen learned.
Oh, good. I have two M2 fuses in PST and DS MK2. They are ready to find new home.
Hi Straightwire,
With your experience with the PMG DAC can I respectfully request from you the two fuse values and their sizes too? I noticed two fuse locations on the back of the PMG DAC, so, is one more important than the other, or should both upgraded at the same time? Please note that the PMG DAC fuse specs are interestingly absent from our Owners Manual.
Thank you in advance,
Tommy Riv.
Only one of the two should be used depending on the voltage in the country.
Upper is for 230v countries and fuse value is 1.0 amp.
Lower is for 120-125v countries and fuse is 1.25 amp
This is printed on the back of the unit.
Hi Jerryd6,
Thank you for being Johnny on Spot regarding my fuse query for the PMG DAC. Silly question, is this Small Fuse a Standard Size Fuse? Getting to back of my PMG is a little painful and I missed the Fuse data on the pic of the back of the PMG unit. Again, thanks for getting back so quickly.
Thanks again,
Tommy Riv
Yes, it’s a standard size. I actually haven’t removed the fuse yet but I don’t think PSA has changed the specs from the DS Mk2, at least not the size. Probably the value, 1 amp, is the same too.
In the past I routinely would replace fuses with HiFi Tuning Supreme, perhaps one of the best at that price point and a good improvement over the stock PSA fuse. This was in the BHK pre and amps (250, 300), although I never did replace the BHK 600 fuses.
Now with PMG pre, dac and transport the performance is such an improvement I don’t see a real need (yet) to change fuses. I also don’t know whether PSA is using the same fuses as earlier.
I recently added a post in the SR Pink and AM M fuse thread asking whether anyone had both manufacturers fuses in their system.
The original poster seems to have done this, with no adverse effects.
Anyone else tried this?
Also I think we are rolling round to the time when SR introduces a new ‘color’ fuse, usually every couple of years, around August time.
Must be getting near that time?
Thanks again Jerryd6, appreciated your standard size fuse info for the PMG DAC 512. Funny, I was ready to jump on the Pink Fuse for the above, basically repeating what I have done for my AI L3B Line Stage Preamp Power Supply and Moon 330A Power Amp with improved results, however, Straigthwire’s earlier comment on the AM M-2 Fuse has put the brakes on my plan. Need to dig in a little further here, never purchased an AM Fuse before, but I am certainly interested. Lastly, to echo your point, the improved sound of the PMG 512 has not really rushed me to change Fuses, hence, this recent stumble by me on this AM Fuse conversation is good to explore.
I use the exact same AM M2 fuse in DS MK2 for PMG512, I also like the sound better than the stock fuse in PMG too. I never tried SR Pink fuse.
Good to know DChang05 regarding the AM M2 Fuse in your DS MK2 and PMG512. Speaking with a close friend in the business he distilled the differences for me. The AM M2 Fuse sound was rounder and sweeter, whereas the SR Pink Fuse signature was a bit more airy, neutral, square/focused and simply a better value for the money.
I am sure your miles per gallon will vary based on the equipment you are driving, but, the explanation buoyed my respect for the Pink Fuses which I have used on my Audible Illusions L3B Line Stage Preamp Power Supply and Moon 330 Power Amp.
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As great as PMG512 is, it does sound a little too revealing in my system. AM M2 fuse brought in a sweeter and warmer sound to my liking. The change made PMG sounds closer to Grimm MU2 in fact
I have a M2 fuse in MU2 also and I don’t think it is helping as much. Your post made me wonder if I should try a SR Pink fuse instead. I can move the M2 fuse to PMG SACD for a try.
On a bus to Vancouver from whistler now. Its a good time to visit the forum 
I have a PMG Signature preamp. Do you think the AM M2 fuse would improve it? I feel my system is a bit clinical and almost too revealing like you mentioned also, and I wonder if it will help. The fuse in the factory unit has gold ends, might be a Siba ($5). Are these fuses in most stereo electronics all slow blow?
I don’t own BMG pre, but M2 fuse has improved every gear of mine. PMG line is so good so the improvement could be less than others. Time to tee off
I don’t own this equipment either, but I have tried about six different fuses in my system and the Audio Magic M1 won out every time and I bet the M2 would be a great choice.
I have used both M1 and M2 fuses and some SR fuses. M2 fuse works great on all my gears. Some fuses did not work well at all such as SR Master fuse that actually sounded worse on Pre and DAC.
SR. Purple made BHK pre and Mk2 sounding a bit bright after 6 months. Recently I put a M1 fuse in PMG SACD and was surprised it made the SQ worse than stock. M2 fuse sounds fuller and warmer than M1 fuse in my system.
I may try a SR Pink fuse on MU2 later. This is the only gear that I could not hear much improvement from a M2 fuse since MU2 already sound full and analog-like.
Does the PMG stock fuse have a ceramic cartridge? If so, the stellar and BHK lines have similar fuses. IIRC years ago Paul mentioned that they use a high quality industrial fuse after doing some listening tests. I do not recall the brand he mentioned.
I remember Paul said that too, and I do not think he mentioned a brand name. The fuses I took out from PMGs look exactly the same as the BHKs so they are probably the same.
Also, on my long term fuse test (more than one year) the Purple and M1 fuses sounded almost no difference from the PSA stock fuses (needed a day to settle). Their improvement at the beginning faded as time goes somehow.
The only exception is the AM M2 fuse, it sounds better after 100 hours and one year later too.
So I am choosing to interpret that as the stock PS Audio fuses are the second best fuses available! 
Wow, that’s not my experience with the M1 fuses. In my gear they sound definitively better than the stock PS Audio.
So many other factors may make a difference. I now only use M1 or any other fuse in my PST and my Decware Dynagrid Jr. in my main system; other components use Swiss Digital Fuse Boxes with Graphene Sluggos, which I find superior to fuses.
I know. I was confused too. My PST had a M1 fuse for a long time like two years. At beginning it sounded way better than stock fuse inside. But before I sold it I put back the stock fuse, and I was dumbfounded that I did not hear much difference. It could be that I had too much earwax, or some bad whiskey on that day. 