Best Used Solid State Amp for less than $5000?


I'm sort of toying with the idea of upgrading my amp (threshold S300 - I know, its old) and the one amp that jumps out is the pass X250 which seems like it can be had for about $3000 to $3500 on the used market. Is there anything else that comes to mind? I can't afford the Tenor hybrids and even the Lamm SS's are about $7 to $9K. The rest of my system is as follows:

CF PFR
Fanfare FT-1
Parasound Ultra 2000 CD
Nakamichi DR1 deck
Stax Lamda phones
Sota Star table w / emt
Pass Aleph ono phono
Hales T8 loudspeakers

Would appreciate any suggestions you may have.
russellrcncom
After considering numerous amps for my Thiel CS3.6's, I looked long and hard at Pass Labs, Plinius, Classe, Krell, McCormack, Edge, and Bryston, but ultimately ended up with a pair of used Theta Enterprises (and an Intrepid, for multichannel). I was totally unprepared for and blown away by the impressive balance and detail that I heard from the Theta's. And their soundstage was the best that I heard by far. You could pick up a new 2-channel Dreadnaught II well within your price range, and you might be able to get a pair of used Enterprises for close to that (I saw one pair here on Audiogon going for $5,200).

FWIW, Pass Labs was very high on my short list, but I never got a chance to audition one.

Tom.
You said used. No question in my mind, then. A McCormack DNA-225 bought used and sent immediately to Steve McCormack for his Platinum Upgrades. And, you'll have money left for a PC and IC. A review on these upgrades soon.
Uh...4Yanx....I have a confession to make. I pulled the trigger about 6 months ago and purchased the Ayre V-5x. Guess that puts me in Bigtee camp now, doesn't it? I sent mu unit to Ayre two weeks ago to have the evolution upgrade. Funny that Bigtee didn't chime back with his impression on the evolution upgrade. Maybe you put the fear of g-d in him. I miss hearing from him.

He is dead right on though when he stated that this amp does not grab you by the throat. The best thing that can be said about it is its noise floor. The Mccormack with the upgrades against the Ayre evolution series would be worth a new thread.....any takers?