Broadly speaking, the smaller tubes higher up the foodchain (i.e. closer to the input signal) are going to make a bigger difference to the sound. Whether that change is a plus or minus is a whole other question.
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?