AR Ref 600 question's


I actually own a pair of Ref 600 II, with eidolon diamond's and cj act 2 preamp. I find the sound outstanding for imaging and power, but the ref's sound is a little on the dry side, compared with my previous cat amp's.
My question's basuically are two:
1)retubing with kt 88: a good idea? witch kind of tubes?
2) retubing 6922: mullard nos, amperex bb or telefunken nos?or other brand?
Thank you very much for help....
Alexander
alexismaster
Alex

I own the X-2 Alexandria which I drove initially with ARC Reference 600 Mk lll and now with the Lamm ML 2.1...the first amp at 600 wpc push-pull and the second an SET at 18 wpc. Bear in mind that the X-2 is rated at 95 DB so suffice it to say that not only is there enough power to drive the speakers with the ML 2.1's but I can do it to near ear bleeding SPL. Only once have I made the amp clip. IMO the Lamm is the finest amp I have ever owned. The only way I would sell it would be to buy Vladimir's new ML 3 SET which
puts out 32 wpc in pure Class A. I am presently auditioning this amp in my room now and I can tell everyone reading this thread that this amp is the one against which all others will be judged. I have heard the Sigfrid and the ARC 610T and they are wonderful amps but don't come anywhere near as good as Vladimir's new ML 3. Only problem is they are $139K so start saving your money because to own this amp is to have reached audio nirvana.
Gerrym5

I can honestly say that I have heard most of the best systems in this country and would like to think that my system ranks with some of the best until this past week when I have had the rare pleasure of auditioning serial numbers 1 and 2 of Vladimir's ML3 Reference. It was a jaw dropping experience. As he describes on his web page the soundstage is 3 dimensional and it truly is. There is a presence and openess (without being bright) that what I thought exists in my ML 2.1's is present in a manner that I have not experienced in my 35 years of being involved in this hobby. Fortunately these amps are on loan for the next several weeks. I don't know how I will be able to send these amps back. Anything else just sounds broken.