New tubes for the Mark IVa

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JDH85

JDH85

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Hey all,

I am going to retube my Mark IVa combo and am considering getting some NOS power tubes. What should I expect them to test at? Is there a particular range that is preferable for correct bias in the IV?

Thank you!
 
Always buy my tubes from Tube Depot. If you tell them they are for a Mark IV, they'll send you correct ones.
 

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