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Tube Rolling - No Change in Sound

In my Wyetech Opal pre, I substituted NOS Ken Rad VT231's for JAN Philips WGTA's in the input stage, expecting more body and warmth to sound based on Ken Rad reputation. But nothing has happened; I perceive no audible difference from the switch in tubes! What's up with this? This was my first foray into tube rolling.

Neal
nglazer

Showing 1 response by pops

pops
2,278 posts
 
I don't know if I agree, in my system amps have made the least difference, speakers the biggest difference by far - then source followed very closely by preamp and lastly amp.

I do agree without question the amp/speaker interface has to be optimal or close to it or you can throw everything out the window.
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