n4:
I bought my Philips HP-890 from Jan Meier two months ago. Nice cans---huge soundstage, deep bass, very comfy to wear for long listening sessions, and easily driven by almost any mid-fi source equipment, including portables and PC sound cards. The 890 doesn't need a dedicated amp and, in truth, doesn't benefit that much from one (maybe about 10-20% improvement, with tightened bass and more detailed mids). It's a good choice for someone who doesn't have the upgrade lust that afflicts so many of us here and just wants a set of high-quality home phones.
With five headphones in my stable and the fact that I'm having a love affair with my Alessandro MS-1 and CHA-47 amp combo, I've been debating whether to sell or keep the Philips.
My 890 is perfect and nicely burned-in. I'd sell it to you for $85 shipped. PM me if you're interested.
Should you prefer buying new, by the way, you can't go wrong ordering from Jan Meier.
--Bill