Hello, I am not sure if this is the right place to post but I have just bought a rm100 second hand , the amp has been used a lot but the seller had it retubed not too long ago with some Mullard el34's. I have since then sold the old modules and got 3 new ones ( I play high gain ) but it does not look like he changed the three 12ax7 common input tubes that are in the head on the left side. Do these have a effect on the sound they are pretty old.
To change these do you have to do any bias or is it just a matter of take them out and put new ones in, I dont know a lot about this sort of thing ?
Also what 12ax7tubes would you recomend ?
Thanks
To change these do you have to do any bias or is it just a matter of take them out and put new ones in, I dont know a lot about this sort of thing ?
Also what 12ax7tubes would you recomend ?
Thanks