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Old 10th August 2005, 07:45 AM   #1
gnugear is offline gnugear  United States
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Default How long does a 7199 last?

Does it wear like a normal preamp tube or is it the kind that lasts forever (figuratively speaking).
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Old 10th August 2005, 08:36 AM   #2
EC8010 is offline EC8010  United Kingdom
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If you leave it in the box, it will last very well. (Unless there's a faulty seal at the pins.)

Seriously, this is like asking, "How long is a piece of string?" In my experience, if you operate a valve at 1/3 of full dissipation it lasts so long that you don't get to find out its lifetime.
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Old 10th August 2005, 06:16 PM   #3
amperex is offline amperex  United States
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If operated within recommended parameters, about 5000 to 7500 hours for quality NOS.
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Old 11th August 2005, 06:45 AM   #4
gnugear is offline gnugear  United States
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Thanks ...
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