Click each question to see its answers.
1 answers
Will this work in a 95 fender twin amp?
Asked by Anonymous on August 30th, 2015.
JustinG
August 31st, 2015

Staff Member

Top Contributor
Yes,this tube will be compatible with amps that use a 12AX7 in the preamp section such as the Fender Twin.
1 answers
Do the JJ 12ax7s come in matched quads?
Asked by Anonymous on July 6th, 2016.
Matt H.
July 6th, 2016

Staff Member
Hi, we only match power tubes. We do not match preamp tubes such as the 12AX7.
1 answers
The numbers seem to match up, but will these work in my Orange BT500 Bass Terror Amp?
Asked by Anonymous on April 29th, 2017.
Matt H.
May 2nd, 2017

Staff Member
Yes, according to the Orange website you amp takes two of these tubes.
1 answers
Hi, I haven't been able to find anywhere in the web a straight answer about the actual technical difference between regular and gold versions of these great tubes. I don't mean the difference on how they compare soundwise, but on the technical paper: Is it just the gold coated pins and the rest is the same? are gold pins maybe factory selected under another criterion before gold coating? etc... Thank you very much! Your tube comparison chart is awesome!
Asked by Anonymous on May 16th, 2017.
Matt H.
May 16th, 2017

Staff Member
The pins are gold and this helps to prevent corrosion and buildup on the tubes pins. Other than the pins, they are the same tube as compared to the regular pin version.
1 answers
Will this fit in the space of a Traynor dynabass 400T?
Asked by Anonymous on May 24th, 2017.
Matt H.
May 24th, 2017

Staff Member
When plugged in this tube has the following dimensions: 1.94" (49.2mm) x 0.87" (22mm). You will want to measure your existing tubes to insure a proper fit.
1 answers
Is this the ecc83-s or the ecc83? the image shows its the ecc83-s but the title reads ecc83.
Asked by Anonymous on August 25th, 2017.
Matt H.
August 25th, 2017

Staff Member
The S stand for spiral filament and refers to the internal construction. This will work in any situation where an ECC83/12AX7 is needed.
1 answers
I bought my first tube amp, will these tubes help my vht special 6 sound less boxey/muddy so i can get more tone?
Asked by Anonymous on October 6th, 2017.
Matt H.
October 6th, 2017

Staff Member
Tube characteristics can be different from brand to brand, and because the tone of tubes can be highly subjective, we can not verify if these tubes will get you your desired tone. You can visit the "Tech Corner" of our website for a 12AX7 comparison of current made tubes. This has a wealth of information to help you make a decision.
1 answers
What is the difference between the 12ax7 and the 12ax7-s ?
Asked by Anonymous on February 16th, 2018.
Matt H.
February 16th, 2018

Staff Member
The plate design on these is slightly more compact but function just like any other 12AX7.
1 answers
I have Bedrock 600 amp with 415v plate voltage. What power tubes would you recommend?
Asked by Anonymous on June 26th, 2018.
BradWbr
June 26th, 2018

Staff Member
All information we were able to find on a Bedrock 600 stated that it uses EL84 power tubes.
Product Reviews
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