New tubes for the Mark IVa

Mark I's, II's, III's and the almight IV

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Bottle Rocket
Posts: 16
Joined: Tue Feb 02, 2016 12:22 am
Location: Middle Tennessee

New tubes for the Mark IVa

Post by JDH85 » Sat Jan 21, 2017 12:11 am

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!

Mark II
Posts: 137
Joined: Sat Aug 05, 2006 11:15 pm
Location: San Jose, CA

Re: New tubes for the Mark IVa

Post by treedroppings » Sun Jan 22, 2017 9:06 pm

ask doug's tube or any of the internet resellers that know how to match tubes for a Mesa!
2006 Fender Lite Ash Strat
2012 US Gibson Firebird V
1990 Boogie Mark 1 Reissue
2-12 Sapele Cab

Music: from blues to thrash and back! (allman bros, exodus, saxon, tcf, robert johnson)

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Mark III
Posts: 447
Joined: Sun Mar 07, 2010 3:51 pm
Location: NY

Re: New tubes for the Mark IVa

Post by swbo101 » Fri Mar 03, 2017 11:55 am

Always buy my tubes from Tube Depot. If you tell them they are for a Mark IV, they'll send you correct ones.
1991 Mark IV A

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