Let us know the values please. Audio Cap Theta is what I am thinking based on experience.
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I suggest you don't do anything with it; a twenty year old DAC will be trounced by any number of new models. I suggest you put it out to pasture in a less refined rig. I would not dream of using a twenty year old DAC, not with the fabulous advancements and low prices of new ones. Go whichever direction you wish, NOS or massive oversampling, you can get some terrific results. I'll let others boast of their performance.
I hope you will consider upgrading your DAC's fuse to a Synergistic Research "Black" fuse. This was a major sonic improvement in my Antelope DAC. As a nice bonus they are sold with a 30 day money back trial. Order from High - End Electronics, Apple Valley, Calif. or THE Cable Company, New Hope, Penn.
I think it is wonderful that you are upgrading your curren
David: I already installed a SR-Black in my amp. That improvement motivated me to look inside my DAC. No fuse. A resistor is in line with the incoming AC. This model was heavily modified by Bob Crump. I'm ordering new caps from Michael Percy Audio. Curiously, he owns an earlier version of the same DAC - designed by Damian Martin. After recapping, I'd love to compare it to a current DAC. Anybody living in OC?
Update - sort of: I replaced all 16 caps in the DAC - installed some new AudioCap PPT’s and TFT’s. It almost died on the operating table. When modding the unit, Bob did some intricate trace re-routing that wasn’t intended to be disturbed. I disturbed it. :-0 Fortunately, it’s working again. After this major surgery, it needs to burn in for awhile before critical listening.
New question: I’m now working on an old power supply for a different component. The 6 electrolytic can caps are easily available at Mouser. The box cap is .22uf 250v ~X2. I think it is a safety metalized polyester film capacitor. It is located next to the fuse. Does this type of box cap need to be replaced? If so, what would be a good substitute. Thx.