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

knghifi Details Discussions Posts This discussion Message User 1,668 posts 08-28-2011 at 04:46pm Copy Comment URL Report Comment Edit Delete 08-28-11: Rrog 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. Rrog (Answers \| This Thread) Rrog, I agree with you. Now tell me where I can find another new MP of 60's Siemens Cca for my preamp at a REASONABLE cost? :-)