Spring -- I'm sure your EMM sounds pretty great (for a digital device!) however I wouldn't expect much in the way of good analog sonics until the cartridge has broken in for at least 150 hours; great sonics will take 200-250 hours. If anyone (including the manufacturer) says less, their blowing smoke up your . . . . . . And this assumes correct arm/cartridge set-up and (after break in) your finding the optimum cartridge loading (which based on the 901's 15 ohm coil resistance should be 325 ohms +/_ 50%) Until sufficiently broken in, expect the sound to be bright/thin, maybe a little grainy, with not much bass (even with the above-mentioned proper setting of SRA and load.) So don't do a lot of fiddling around until you know you have enough mileage on it. Premature tweaking is a mistake a lot of folks make. I can't imagine how those magazine people can write cartridges reviews with a straight face!
If you want to speed up the break in period, I suggest you by the Cardas sweep record, which has locked white noise grooves, and just let it run 24 hours a day for a week (when you're not actually playing records that is!) No need to fire up the rest of the system while running the Cardas record, but it's good for it if you want to.
Otherwise, averaging 2.5 hr/day of normal playing time, you're looking at over three months. Personally, I couldn't wait that long! Just as a side note: I bought a Transfiguration Temper W exactly two months ago, and been away two weeks during that period. The specs/instructions say 30 hours break-in. Yeah, right! I figure after 50 days, I've put around 80 hours on it (mostly just playing records) which I calculate by counting the number of records played times 35 minutes. And one can just now begin to hear it starting to go through it's metamorphosis into a really high-end device. I know setup is perfect, and load is set for its calculated optimum of 150 ohms. Recently, over a period of two or three days, the image/soundstage became solid and convincing, bass got tight, lyrics (transient response) became effortlessly intelligible, etc. Now I can only wait and listen before attempting any further refinements.
Have fun!
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