Quote:
Originally Posted by TOGA
Mine is on 1,200 hours, bought in August 2010.
Preblem is the 2 of 6550 are passed their half life already.
Do I have to burn in like 300 hours again with new tubes ?
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TOGA...no you don't. What needs the long break-in on the Ref 40 are the large Caps (those big honking white cans in the power supply
). Tubes break-in fairly quickly (10-20 hrs) and you should be fine. By the way, I would call ARC and ask them about the useful life of the 6550 in the Ref 40. Remember the 6550 here is being used in the power supply and not as an output tube in a power amp. So it is being driven a lot less hard than in an power amplifier. So it's rated useful life as an output tube in a power amp is 2000 hrs. In the power supply of the Ref 5 and the Ref 40 it might have a much longer useful life. Best to ask ARC about this to confirm. Enjoy your Ref 40.
