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FDP Forum / Fender Amps: 1985 - Current / Blues jr

Contributing Member

Maryland - USA

Move out Draw fire....
Sep 17th, 2017 04:08 PM   Edit   Profile  

Ok so I have a blues Jr.

Need to replace the tubes.
Play classic rock.

What tubes should I look at?

Play acdc to guns and roses.

Also a lot of Clapton.


on the rhine

Sep 19th, 2017 04:59 AM   Edit   Profile  

Hi Rhino!

I don´t think you need any "special" tubes - just pick a set that will WORK ;-)

Not sure about the current offerings by Fender/Groovetubes, but they used to offer power-tube-sets selected to suit your specific amp and taste.
They used to offer sets that were labelled "cool" and "hot" etc. so you would´t need to re-bias your amp when changing tubes.

Anyhow, if you happen to have an amp-tech nearby, I would recommend to buy a set of EL84´s from him and have your amp biased properly/to taste.

cheers - C.

Contributing Member

South Florida

Sep 19th, 2017 09:47 AM   Edit   Profile  

I would stick with a pair EL84s as designed and get an extra set so you replace them as a matched set.


Pocono Mountains USA

Wanderin eye and a smokin gun...
Sep 28th, 2017 02:43 PM   Edit   Profile  

I just bought a Tweed Blues Junior new and it came stock with re-labled JJ's and called them "premium" They are fine & durable but I replaced V1 with a Tung Sol Reissue to sweeten it up a bit. I would check to see if they are stock Groove Tubes & use this chart to see what is in there already. JJ's Sovteks should be fine w/o spending the dough for replacements.

Groove Tube Designations

FDP Forum / Fender Amps: 1985 - Current / Blues jr

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