Tube DAC to take edge off Rega Planet 2000

In my opinion, the Planet 2000 isn't an edgy CD player, having owned one, and now owning a Jupiter 2000. That said, a non-tube option with a very lush sound that works exceptionally well with the Planet is a Bel Canto DAC 1 (or DAC 1.1, or DAC 2 depending on how much you want to spend) - I have used this combination before and it's a natural pairing.

Given that you're getting harshness with a famously laid-back CD player, perhaps the problem lies elsewhere. It could be the room itself causing this (first reflections, glare etc.), or some other component.

Yeah I doubt the Planet would be the problem... Look into possible cables, or the preamp. but since you are getting a mcintosh wait it out, those seem to solve a lot of over anylitical or less musical presentations anyway, so get the mcintosh first, you will see.

You may want to try the tube buffer by musical fidelity runs around 300 or so.

I would like to know how you drew the conclusion that your CD Player is the problem, and not a speaker/room issue.

I've had the Rega Planet, Planet 2000 and now the Jupiter 2000 which I run with a Mac MC275 amp and C2200 preamp. The sound is not at all edgy, nor should your Planet 2000 with the MC2275. I'd check into the cables as a match. The JPS Superconductors are very clear although not edgy either. Actually, I just demoed the JPS cables and should receive my order in a day or two becaues I found them to be a great match with the Mac and Rega equipment.
Perhaps the JPSs are not a good match with your current amp.

Something is amiss but I doubt it's the Rega; unless it has developed problems. Call the Rega distributor to determine if there may be a problem with your 2000. Maybe it needs a service check.