New tubes for the Mark IVa

[JDH85]

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!

 

[treedroppings]

ask doug's tube or any of the internet resellers that know how to match tubes for a Mesa!

 

[swbo101]

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