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

dekay Details Discussions Posts This discussion Message User 5,704 posts 08-26-2011 at 02:21am Copy Comment URL Report Comment Edit Delete When marketing the amplifier, as far as I recall, MF stated they were good for 100,000 hours and that they would "reserve" a replacement tube set for every unit produced. That was then and I don't know what the now position is.
lloydelee21 Details Discussions Posts This discussion Message User 1,202 posts 08-26-2011 at 07:50am Copy Comment URL Report Comment Edit Delete Done!!! Thuaile, i think you are in very good shape. good luck and enjoy!
thuhaile OP Details Discussions Posts This discussion Message User 105 posts 08-26-2011 at 03:35pm Copy Comment URL Report Comment Edit Delete Thanks for fixing it :)
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.
orpheus10 Details Discussions Posts This discussion Message User 8,668 posts 08-28-2011 at 01:35pm Copy Comment URL Report Comment Edit Delete NOS tubes last much longer than new tubes. This is something else to factor in when considering cost.