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Discussion Starter · #1 · (Edited)
I just bought at jtm 30 at a great price but the tubes need replacing, this is the first time I have ever needed to do this so I need some information. I *think* the tubes in it now are 2 5881's(thanks jazzedout) and 3 12ax7's (its a '96 model). I was thinking of re tubing with jj's 12ax7 preamp and 6l6. Could I retube them myself, Is there any risk involved/how should I do it? How much does it cost to have an amp technician retube an amp? Also when im buying the tubes there are alot of options, what do those mean(matched pair, Hi gain, balenced triodes)?
-Thanks
 

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EL84s? The JTM30 has 5881 tubes in it. (I also have a 2x10 Jtm30) I have EL84s in my Laney LC15R and the 5881 are much larger in comparison.
 
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