For what it's worth, Parts Connexion in Canada, who I have no affiliation with, have the high quality German made HiFi Tuning fuses on closeout. They have the "Classic Gold" series of gold plated/ceramic (instead of glass for improved resonance properties) at $12.50 each (50% off) for the 1 1/4 inch size (6.3 x 32mm size, various amperage ratings) and the Silver Star series on sale (75% off) at $29.98 each. I know, sounds crazy, but they do make an audible improvement. They have a pdf showing tests of various fuses; the HiFi Tuning fuses have less AC and DC resistance and better overall contact due to less corrosion, better materials, etc. Take a gander at it yourself. Hey, if your amps (mine are MC-60's) are in good shape (rebuilt with newer electrolytics, other caps, replaced selenium rectifier, good, strong tubes, etc.), the chances of blowing one of these expensive fuses is minimal so why not splurge a bit. I bought two pairs of the "Classic Gold" and I do hear slight improvement in the sound of the amps. They are on closeout because apparently HiFi Tuning has come out with a "Supreme" series using special solder from Mundorf, and a special 99% silver, 1% 24kt gold mixture for the internal fuse leads which are real expensive. If you don't have any inclination to buy expensive fuses though, stick with a quality brand like Littlefuse. I have heard of issues with some Chinese fuses simply being of poor quality. A popular tube amp manufacturer recently switched to that brand due to sporadic failures of poor quality fuses from China. The Littlefuse brand is consistent in quality according to several sources I spoke to.