Just wondering because I've been doing a little of that lately. About a week or so ago, I acquired a NAD PP-3—a USB phono preamp—dirt-cheap on eBay. It was a fluke really…the seller was unloading it "as is for parts" because it was thought to be defective even though cosmetically it's like new. I don't think she/he even tested it, because I've found no problems with any of the inputs or outputs…it's a $200 piece of gear that cost me $28 + shipping.

The best thing about it in terms of the RR2150 is that the PP-3 has a line input, so that I can use it and still get the benefits of the RR2150's phono stage. I tested the moving magnet in- (it also has one for moving coil cartridges), but I like the RR2150's better. I have no intention of digitizing my entire LP collection (though the wife would probably welcome that); but since in most cases I don't have CD duplicates of my LPs, it's good to have the ability to digitize the rare album tracks that I'd like to send to my friends.