Audio research reference 10 tube replacement

If I use this preamp 12 hours a day how long Will it take before I need to replace tubes?

I hear Macintosh preamp tubes Will last 9000 hours. Don't mind replacing a couple tubes but very expensive to replace all the audio research tubes.

Otherwise looks like a nice preamp

jumia03-03-2022 6:21pm

cleeds Details Discussions Posts This discussion Message User 5,928 posts 03-03-2022 at 08:26pm Copy Comment URL Report Comment Edit Delete At 12 hours a day, the 6550 tubes in the power supply will need to be replaced at around 5 months. (2,000 hours.) The remaining tubes (6H30) will last about twice as long.
jasonbourne52 Details Discussions Posts This discussion Message User 2,863 posts 03-04-2022 at 12:40am Copy Comment URL Report Comment Edit Delete Good luck in buying new Russian 6H30 tubes!
ghdprentice Details Discussions Posts This discussion Message User 6,865 posts 03-04-2022 at 01:18am Copy Comment URL Report Comment Edit Delete My experience has been, confirmed by my dealer / friend that, it depends. It depends on how much stress you put on them. For instance, if you turn on stuff and just have it idling 10,000 or more hours are not uncommon. I assume you have your REF 10 on for background music… it would not surprise me if 5,000 or much more. I have all Audio Research Ref equipment. I never changed the tubes in my REF 5SE over five years before trading it in… unfortunately I don’t remember how many hours it had. Nothing like 12 hours a day. I would order a set of replacements… then you will not have to worry until you know (when you have to use them).