Tube Break in Period / Method


Just rolled out the Stock tube out of my Music Hall 25.3 DAC and replaced it with a NOS JAN Sylvania 6922. (Mullard was out of my price range) How long should I expect the break in period to be and what is the best method? Set a track on repeat or just leave the unit on?

Thanks,

John
jwhiii56
Only you can be the judge of when the tube is settled in. I don't see any advantage in placing a lot of wear and tear on your equipment in an effort to speed up the process.

Also, the original tube was biased at the factory and a different brand of tube may or may not be operating optimally with the current bias setting. This is most likely not user adjustable. So, if you are not satisfied with the sound or if you feel the new tubes are not living up to your expectations you may want to go back with the original tubes.
40-50 hours with a signal running through it. Just play music and sit back and listen and enjoy...