McIntosh MC275 vs Conrad Johnson Premier 11A

I'm not sure what you mean by "old MC275"? Are you talking about vintage or re-issue?

A vintage MC275 in top notch condition is actually more expensive than a CJ11A... And all the re-issues sound inferior to the original 275.

I have been using a CJ6550 for about a year. Replacing the factory stock 6550 with Svetlena KT88 improved the sound a lot - better dynamic, treble extension and midrange smoothness. Treble is not truncated in my setup (CJ17LS, Vienna Acooustic Beethoven + sequerra T1 tweeters).

Both amps are good and it's a personal taste after all. Since their resale value are quite high, it does not harm to try both. =D

Get a MC step up device. Because of my low sensitivity amp,
I had similar issue with SP-11 MKII with VDH MC cartridge ( 0.5mv )
Are you using dual mono mode on the MC240? The gain is much higher than stereo mode.

To "chazzbo"- Is it true all conrad johnson tube amps are "noisy"?

i heard the cj premier 140 at my house for an extended period of time, and it was *very* quiet. in fact, i'd say it's lack of noise was probably one of it's strengths...

I was confronted with exactly the same choices Fernando. Took my time listening to both, since I had the opportunity: a new MC275 Commemorative and a used Premier 11A on a bunch of speakers from B&W 805S, Lipinski L-707 and Reference 3A Dulcet to Klipschorns and KEF IQ9. With the McIntosh I always used a Mac 2200 tube pre-amp.. whilst a C-J PV-12 tube preamp partnered the Premier 11A. Though both are wonderful amps that sound amazingly full and detailed when heard on their own, tested back to back, using the same Naim 5x CD player and identical Nordost Baldur cable and interconnect setups, the McIntosh never sounded anywhere near as musical as the C-J. I also ended up listening to a McIntosh MA-6900 Integrated, which could do little to stop me going for C-J. I have to admit that although the MC275 was my first love right from the beginning, even before I'd ever heard about Conrad-Johnson, the listening tests left no doubt in my mind that the Conrad-Johnson offered higher resolution and an amazing sense of oneness with the music. Its soundstaging is also on another level. I ended up buying the Premier 11A and recommend it highly. You can spend a lot of money and still not find anything as musical as this at even four times the price. The 11A is so good that even if you don't have enough cash at this point to match it with a proper pre-amp, it'll make a startling difference, as it has in my setup, using a $600 Yamaha home-theater receiver as pre-amp until an almost new C-J Premier 17 arrives with new Reference 3A Dulcets. The next step up from this would be an Audio Research Reference 3 pre-amp, 610T mono tube amp setup. And that'll cost you a good 40k if not more with the Reference CD player. Then there's Lamm and ultimately MBL's reference stuff. C-J is better than McIntosh in every range, I feel, having heard the ART pre-amp mated to Premier 8s recently