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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 1 response by mikey8811

mikey8811
259 posts
 
It's a no brainer.

If they can drive your speakers, I would go with the Class A Pass Labs. I think the 0.8 series have higher input impedances.
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