When to replace pre-amp tube?

Hi, I'm a tube dummy and want to know when would I need to replace the tubes on my MF Nu-vista M3 integrated amp. Thanks.

thuhaile08-25-2011 7:27pm

rrog Details Discussions Posts This discussion Message User 1,958 posts 08-28-2011 at 05:44am Copy Comment URL Report Comment Edit Delete Anyone with tube equipment should keep spare tubes on hand because you never know when you can have a tube failure. If you think your tubes are getting worn you can try a new tube and see if you hear an improvement. If you don't hear an improvement your tubes are ok.