Can anyone explain to me the differences in the various formulations, i am new to r2r but have used cassette tapes for years. One of the reasons cassette was able to close the gap with r2r was better tape stock eg, metal tape or chrome. My question is are any of the various r2r tapes available metal/chrome? and if not why not!! what do the numbers, 468,478,499, 900,911 and GP9 mean?
Thanks, John.