Quote:
Originally Posted by tima
I've found the 6550C or 6550WE can last 1800 to 2400 hrs in ARC gear, although the early sounds of a tube degrading can be subtle. Of course there are exceptions. You can always swap in a good 6550 and compare.
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Thanks for the suggestion. I have thought of doing that soon and it will be easy to swap out tubes since my Ref 6 sits on the top shelf of my audio rack.