Pass Labs X600.5 or a Pair of Classe Omicron's?


Time to make a choice. I know I want the amps close to my speakers for a short speaker cable run. It's not possible for me to A/B these amps. I'm looking at Pass Lab's X600's, around $6K used, (thinking I can do the .5 upgrade a little later on) OR the dual mono Classe Omicron, around $6K used, (thinking I can add a second one to run them bridged for each channel later on). Anyone with experience or opinions?

My system: Revel Salons, Classe CP-65 preamp, APL 3910 digital source. Not sure about cabling yet (ideas & suggestions welcome), but probably Transparent Ultra. Ref prices are crazy!

Thanks,
Doc
doc_az
Teajay,
I see some adds where you can trade up the X600's to X600.5's for $6K. This is the upgrade I was writting about. I believe Audio-Video Logic has this deal. I would think for $6K the improvement should be as significant as the price difference. It would then be a $12K venture. Still a savings off retail. I've heard nothing but great things about the Omicron. For the most part I've heard all good things about the X600's with a couple of folks saying they were a bit dry. I would think source, cabling and speakers might make a huge differnce in that opinion. I know Classe's sound. I have a CA-201. Great little amp. Warm and and liquid, nice base extension. Can't help but think the Omicron will sound great. Have you ever found the X600's to be dry? BTW, I'll look at the Accoustic Zen review and cables - thanks.

-Doc
The top-end on the 600s is more neutral to my ears.I've heard both and really liked the PASS.Any thoughts on going to a different pre?The digital pre/parametric EQ units would work well (Tact RDP-1/2).
Sorry Doc, I thought you mean't by up-grading the 600's to 600.5 was an actual modification that could be done by Pass Labs, not the trade-in deal offered by Audio-Logic in Iowa. To answer your question, no I did not find the 600's "dry", but not as "warm/musical" as the Aleph 1's mono-blocks in my system. I would suggest you might try auditioning a 350.5 in your system, which I think sounds better then the 600's, and still would save you another $3000.00 in total cost. Unless you need that much power, I drive MG-20R's in large room and have all the current I need, its a beautiful sounding amp that has the "warmth/musicality" of the Aleph series with the dynamics/details of the X series.
I have had both the Pass X250 and the Omicrons in my system and compared them side by side. I chose the Omicrons. If you like the sound of your Classe than I would go with the Omicrons. I definately found the Pass to be dry(although a great amp) and not as musically satisfying as the Classe. I am not sure how the X600 compares to the X250, but I think they are probably pretty similar in sound. Good Luck.
Tpsonic,

The CP-65 is really a world class pre. I've heard it in a few differnt systems and it never fails to delight. Granted there are finer pre's out there. I think the CP-65 is pretty neutral. Perhaps adds a touch of warmth. I'm purchasing an APL 3910 (can't wait) and I plan on A/Bing it with and without the CP-65. From all accounts, for $6K this CDP is in the $15K to $20 class in sonics. I think the A/B will be very revealing if the CP-65 has any faults. I'd go preless except I need a complete front end for my HT to play through (I still may be able to pull this off because I'm having analog inputs installed on the APL 3910). Of course, I want to get back into vinyl with a nice analog rig some time soon and that means a pre. Nothing is ever simple, but it's all good! :)