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Old 08-13-2019, 05:52 AM
Mikeoz Mikeoz is offline
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Join Date: May 2013
Location: Surrey, UK
Posts: 201

Originally Posted by tima View Post
Fwiw, the manual says: "The vacuum tubes inside your Reference 10 are quality tubes and with normal use should not need to be changed for approximately 4,000 hours
of use."
My Ref5SE manual also has this statement this but does it refer to the 6550 or the 5 6H30s ? - or both ? I read somewhere the 6550 should be changed more frequently.
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