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-   -   output devices on X -X.5 and XA.5 (http://www.diyaudio.com/forums/pass-labs/219061-output-devices-x-x-5-xa-5-a.html)

Stefanoo 4th September 2012 04:26 PM

output devices on X -X.5 and XA.5
 
I have a curiosity:

are the same output devices employed on the first X Series the same on the later X.5 and XA.5?

Zen Mod 4th September 2012 05:56 PM

yes

Stefanoo 4th September 2012 06:15 PM

thanks

I was thinking of buying either the X600.5 or the XA200.5 if I could find them used would be even better.
I would pair them with my B&W 800Signature.

I currently own the X250 which is a very nice amp, and I was either thinking of trying to build one myself first and then once I had fun buying one of these two beasts or just skipping the fun part and go into serious stuff!!

Stefanoo 4th September 2012 09:15 PM

Also if anybody knows, what is the difference between X series and X.5 series.
I have read that the latest X.5 sounds significantly better.
What is this due to?

Zen Mod 4th September 2012 09:43 PM

plenty of info in last several months

find XA white paper on PL site

flg 4th September 2012 11:59 PM

Or maybe http://www.firstwatt.com/pdf/art_leave_classa.pdf
But, I think the answer is More Bias!

Stefanoo 5th September 2012 01:56 AM

Quote:

Originally Posted by Zen Mod (Post 3152286)
plenty of info in last several months

find XA white paper on PL site

where can I find this paper?
I have looked on Pass lab site but couldn't find it!

Stefanoo 5th September 2012 01:58 AM

Quote:

Originally Posted by flg (Post 3152441)
Or maybe http://www.firstwatt.com/pdf/art_leave_classa.pdf
But, I think the answer is More Bias!

maybe between X.5 and XA.5 there is more bias.
However I think that between the X and X.5 series the front end must be different giving equal output stage, this is my guess...

flg 5th September 2012 11:28 AM

Well, I wonder why you are interested in those two models. One has double the bias and 4 times the power of the other?
Maybe the article ZM is refering to is this one:

http://www.firstwatt.com/pdf/art_peanut_butter.pdf
:D

flg 5th September 2012 11:30 AM

Also, isn't one a complementary follower ouput and one and version of the Aleph type output?
;)


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