M1200 tubing

When should you be thinking about replacing the tubes in a M1200? I have three years and it runs on average about 3 hours a day.

Also any suggestions on what tubes to buy as a replacement?

12AU7 Is stock replacement… prob notice more of a difference changing fuses, I hear stock tubes are actually pretty good.

You get 10,000 hours of listening maybe 15K before needing replacement. Thats like 8-9 years for you, but 5years in pay attention for critical listening, and honestly after 7or8 years prob best to refresh.

You will notice when the ā€œmagicā€ is no longer there. The life will disappear from the system.

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Or when you find yourself looking a little bit too closely at ā€œupgradesā€ and reviews vice searching for new music.

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