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[Amps] NOS 8874 (3cx400)

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Subject: [Amps] NOS 8874 (3cx400)
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Date: Sun, 2 Jan 2022 09:22:29 -0000
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Hi to the group,

I have been offered a  pair of new old stock 8874 tubes. These would be very 
nice to have for a rebuild project, BUT with  date codes in the 1980's, what 
would be the normal practice to get them back to normal expected output (I ask 
in the hope that this would be possible)

Should I run them up just on heaters & blower a few days, then try HV on them. 
Or slowly bring HV on over a period of time??

What's would be my best options??

Any advice would be much appreciated.



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