Tube rolling suggestions


I purchased a Rogue M150 several months ago (my first tube gear). I would like to try some tube rolling and have a few questions I could use some help with. Which tubes have the greatest affect on the sound of the amp Input, Driver or Output? Any suggestions regarding replacement tubes and their characteristics will be appreciated? The stock tubes in each mono block are all Electro Harmonix, drivers are (2) 12AU7, input is (1) 12 AX7, Output are (4) KT88.
Thanks in Advance
sgunther

Showing 2 responses by sgunther

Thanks for the great responses, I have recently read Joe's Tube Lore and definitely want to try the 5751 input tube. There sure seems to be a big difference in price. I know it is all subjective but is there that much difference between the 5751 JAN GE for $18/each at Tube Depot compared to the RCA Black Plate listed here on Agon for $50/each.
Thanks for everyone's input. I purchased a pair of NOS RCA 5751 3 mica black plate tubes from Jeff and they really made a positive difference, primarily better imaging and tighter base.