Thanks for the reply oldhvymec. You made me think of another question. If I replaced the tubes with better (more expensive matched) tubes, is it okay to just replace the two main tubes? It seems like it would, but as far as I know, power could be running through all the tubes, each one affecting the sound in a slight way.
Rotating (not rolling) Tubes
I have a McIntosh C2300 preamp. I rarely use the MM Phono stage and never use the MC stage. My question is, do the MC and MM tubes get as much use just being "on" as the main tubes. If not, would there be a benefit to rotating the tubes? Think of it as rotating tires on a car. Say every six months or so move the MM tubes to the MC slots and the MC tubes to the Main slots.
I do have access to a decent tube tester, so I can test the tubes to see how the MM & MC tubes test against the main tubes, but haven't pulled the tubes to test. I did do a search and didn't find anything useful. Thanks for any and all advice.
I do have access to a decent tube tester, so I can test the tubes to see how the MM & MC tubes test against the main tubes, but haven't pulled the tubes to test. I did do a search and didn't find anything useful. Thanks for any and all advice.