2. amps-preamps
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Quad Tube Rolling

Okay, this may sound like a dumb question for smart audiophiles but i am still earning my wings in this fine hobby. In short, I am only too happy to defer to this knowledgeable forum and would greatly appreciate any input.  My question is, will it make a noticeable sonic difference if i changed the input tubes on Schiit Freya+. I recently changed the stock input tubes from 6SN7GTB (Russian) to the Sylvania 5692 red base (1950) and found them to be a welcomed improvement and they are still just breaking in. So, it makes sense to do the same with the input but that is a $175.00 decision so i am needing some big brother advise... What say ye?           
mrdon
testpilot
981 posts
 
You post is confusing.  Are you asking it changing the input tubes on your Quad amp will improve the sound?  It sound like you have already rolled tubes in your Schiit Freya???
mrdon OP
109 posts
 
Sorry for the confusion. I did roll the output from 6SN7GTB (Russian) to Sylvania 5692 and noticed an improvement. Question is, would rolling the input side create an improvement as well.   
roberjerman
4,319 posts
 
YES! 
testpilot
981 posts
 
When you say input side are you talking about the tubes that act as a cathode follower (left side tubes)?  These tube are used to convert the high impedance signal coming from the previous gain stage to a low impedance signal.  A cathode follower has no gain at all. 

Unlike a gain stage where you will get almost unanimous consensus that rolling tubes will affect the sound, you will get mixed comments on the effects of rolling cathode followers.  My advice would be to try for yourself.
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