Thread: Tube replacement
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  #10  
Old 04-05-2020, 06:13 PM
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JPrest JPrest is offline
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Join Date: May 2009
Location: Minneapolis
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Old stock Russian Winged 6650c or WE version ( not Sovtek ) is correct tube.

Personally, I am using a late 50s TungSol 6650 Black Plate.

Tube runs very hot in this application, newer tubes tend to fail due to heat/stress.

Just my 2 cents.
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