Conrad Johnson 350 vs Pass Labs X amp


I have a CJ 17LS preamp, CJ Premier 11A power amp and Quad 989 speakers. I'm planning on upgrading the power amp and was thinking of the CJ 350. I don't need 350 wpc but I'm attracted to it because people are saying its the best amp CJ have yet made - even better than the 140. However I've also been reading very good things about Pass Labs amps and was wondering about the X150.5. Has anybody compared the 350 and the X150.5?
PS. You may say I should be comparing the X350.5 with the CJ but as I understand it the only difference in the X amps is the power output, and as I said I don't need 350 wpc.
128x128iansr
OK, it seems that nobody out there has compared these two amps, so has anybody got anything to say about about either of them on their own merits?
The most exquisite sound available (to my ears) in 1986 was the c-j Premier 3 preAmp with the 200 watt Premier 5 monoblocks driving the SoundLab A-1s. I lived in San Diego at the time, and was unusually fortunate that my local dealer helped me to audition and actually A-B everything of quality then being manufactured.

I'm now in Amherst, Massachusetts, and am in the process of building a new system for my new house. The idea of demo-ing everything is clearly out of the question, particularly in light of the sheer numbers of hi-end tube equipment now available. Hence, I am relying quite a bit on the A'gon members' thoughts.

My Premier 3 is currently at the conrad-johnson facility, being cleaned up and refurbished in preparation for sale (let me know if you want a Pr. 3). I have replaced it with the Premier 17LS (bought used on A'gon). This decision was based on reviews, forum comments, and my own respect for c-j's sound and excellent service. I might do some comparisons for kicks, but if I do, it will be limited to the Supratek models, the First Sound, and maybe the H-Cat.

In regard to amplification, my first instinct was to stay with tubes, either the c-j 140 or SET monoblocks by Cary or Audio Note. However, the low output of most triode amps made me re-think things, and I came to the c-j 350. My thinking at this point is that, if such strides have really been made in solid-state sound, then perhaps my tube digital source (Audio Note) and tube PreAmp (the c-j 17LS) might just be complemented, or at least not be adversly impacted, by the ss 350. This choice is also important in light of the 350's ability to drive most speakers, as my SoundLabs died and I took them to the city dump...I'm leaning toward replacing them with Quad 989s or ?.

So, my personal choice at this moment is the conrad johnson 350. I anticipate exceptional sound through Quads. I'm therefor looking for one now, and if it sounds as good as it should, I'll keep it. I am so very much a cj fan, based upon 20 years of experience with them, that any minor improvement in sound from a different unit, if possible) would not be enough to sway me.

But of course, the only way to know for sure is to listen. I realize that all this has been absolutely no use to you, but when I get the 350 and do some listening, I will report to you my impressions.
Do you have long interconnects?.
I tried a pass 350 with my prem 16 earlier in the year with poor results. Slow rather ponderous sound. Could have been that my prem8a's were a lot better, but I think the cj pre amp may have been having trouble driving my 6 metre i/c's.
cj don't recommend long i/c's.
The CJ has a very layered and rich sound with a very wide and deep soundstage and focused images. The Pass has a livelier sound with better extension at the frequency extremes and larger images. So its like trying to decide between blondes and brunetes: both are good. So the ultimate solution is to get both amps. Who cares if its a little expensive? You only live once.