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Swapping W4S to Pass Labs XA- worth it?

I currently own Wyred4Sound ST500 MkII powering my Golden Ear Triton 1s. 
Before it was Krell 400xi - and def felt W4S sounded much better -cleaner and (surprise) warmer. I am using it in HT setup or in separate "analog" path.
But upgrade bug is strong ))) and I read somewhere that GE uses Pass Labs XA in all demos.
I wonder if it worth to upgrade and will I felt improvements. Speakers are 92 db sensitivity, and low bass is powered.
Have anyone compared W4S mk II and Pass Labs XA 30.5 or 30.8 (I cannot afford more powerful Pass amps)?
mikhaelkuz

Showing 2 responses by charles1dad

charles1dad's avatar
charles1dad
10,250 posts
 
Hello Michealkuz, 
Congratulations on getting this amplifier and I believe that you'll be very happy with your decision.  Given your (stereo) listening volume habits and music genre  I doubt  you'll use more than a few watts (the majority of your listeniing) and will rarely move out of class A operation. Let us know your listening impressions. 
Charles
charles1dad's avatar
charles1dad
10,250 posts
 
It is my understanding that the 30 watt rating is the maximum power provided while remaining in pure class A. This Pass amplifier is capable of somewhere in the range of 150 watts class A/B into a 4 ohm load. 
Charles 
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