PS Audio puts audiophile ceramic fuses in their equipment. I have a NuWave DAC. When asking about possibly upgrading the fuse they told me I already have on in there. They even sent me one for a back up if needed. Its gold plated and ceramic. It seems to be made just for them. No name on the fuse. A while ago PS Audio used to sell their own audiophile fuses When I asked my amplifier company why they will not include an audiophile fuse, I was told because they want the owner to decide that for himself, since different fuses will make the amp sound differently.