Even though Rogue says the mu-follower, or second position tubes (these are the left tubes), have a small effect on the sonics, this is not true. They have a considerable effect, though not as much as the first position tubes. It is definitely more than 10%, probably more like 30-40%. Believe me, I know, because I own a Rogue M99.
Rogue 99 Mag re-tube Q
I want to re-tube my Rogue 99 Magnum and am unsure of what my choices should be. I know what I'd like to hear but I know jack about getting there. I listen to a wide range of musical genres and prefer a well defined, rich and wide soundstage at low to medium levels but want the shoot out the lights punch when needed. I'm looking for a do it all set up. I've heard that other Rogue owners like to split up the tube pairs so as not to attenuate the shortcomings of one tube type. Price is an object but for 4 tubes I think I can afford almost anything except maybe NOS TungSols or Mullards. Any intelligent thoughts are appreciated.