JJ EL34-II Power Vacuum Tube (Matched)

7 Reviews

Availability: Usually ships within 24 hours.

USD $‎25.95

Need matched power tubes? Don't worry! Price includes matching in any quantity you need for no extra charge. Need a matched pair? Just order "2" tubes. For a matched quad order "4" tubes. Matched sextets and octets are available as well.

The new JJ EL34-II power output vacuum tube is now available. Great classic rock tone for a reasonable price.

From our review of this EL34 tube: "JJ has upped their game with the new EL34-2, and the design change is truly big enough to warrant the use of the new name. I found there to be a really nice top end that is smooth and free from harshness, while still delivering a nice bit of sparkle. At the other end of the spectrum I found the bass to be very firm and clear with no boominess. For guitar use the midrange is where the action is and this tube handles it nicely. I didn’t hear any honking mids."

If you are curious about how these fare in a hifi stereo amplifier be sure to read the Wall of Sound EL34 tube comparison for details.

Other JJ Electronics tubesEL34 Tube Types

Additional Information and Downloads

EL34 Tube Review for Guitar Amplifiers
EL34 Tube Review for HiFi Audio

Tube Matching Information:
Power Tube Matching FAQ
Perfect Pair System

JJ EL34-II (EL34) Datasheet (PDF)

Download Adobe Acrobat PDF reader

Warranty Information and Return Policy

Warranty Period: 3 months

All our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)

If you receive a tube that does not perform to the manufacturer's specifications, please do the following:

- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.

Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.

We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.

These guidelines may be updated without notice.

Ratings & Reviews

7 reviews

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JJ EL34-II | Warmed up an Egnater Tweaker-15 Head


Great tubes! That's the short story.

Long story/personal application: I have an Egnater Tweaker-15 head, great little amp. I'm running it through a JSX- 4x12 (bought used). For one reason or another, the 6v6 stock tubes were just too bright for my ears and I couldn't dial the brightness out.

After much research, I landed on these JJ-EL34-II tubes. MUCH improved sound over the stock 6v6s to my ears, and much warmer and better crunch. The EL34-IIs barely fit in the head-case, but they WILL fit.

I run the Egnater on the Vintage British channel, hot, normal/tight.

JJ EL34-II | Closet to NOS you can buy


My go to tubes for my Blackstar HT Club 50 MKII. I recently gave JJ another try and I am so happy I did! All the new production Russian offerings just did not do it for me. Seems like all just rebranded Sovteks. I'll stick with what JJ has to offer for all my tube amps! Get yourself a good balanced set of these JJ-EL34-II and you won't be disappointed!

JJ EL34-II | MK-301 MK II headphone amp with Focal Elear Headphones.


The MK II JJ’s were supposed to be an improvement over traditional EL34, and they tend to live up to the hype. Lows are good. You hear the bottom end and it’s not boomy. It’s there and will spring forth if called for. Mids are excellent, amazing actually. I switched from another brand EL34 and was astonished at the depth and naturalness of Seals, Kiss from a rose. The best tube for vocals. It was the only tube I wanted to compare against my iFi Pro iCAN in solid state mode. I consider this headphone amplifier my end of the line high end. Well I’ll be damned. The iCAN definitely had more dynamics. However, the voice on the JJ-EL34-II is a winner in vocals. HANDS DOWN. Highs are fine, they compliment the overall sound of the tube. The highs are certainly not dull, they are there and if the song calls for clear cymbals the JJ will accomplish that. There just not as prominent as some of my other tubes, however the depth and openness of the upper octaves makes the music image like no other tube.

JJ EL34-II | Great Tubes!


Recently had my Amp guy who gets his tubes from the tube store put a set of these JJ-EL34-II in my JTM50 Style amp. Originally had the regular JJ EL34s in the amp and only for a few months at that so they were still pretty fresh but he raved about the 2s so wanted to give them a try as wasn't quite fully happy with my sound yet. Well these tubes rock! They tightened up the amp, made it not sound as flat and the bass not a flubby and have better attack with the guitar. So personally I now prefer the II or the regular JJ.

Awesome tubes for the money!


These sound almost as good as my stash of nos tubes from the 70s! For the money, these are excellent replacements for vintage 60s and 70s Marshall amps! How long they live is yet to be determined but they sound really really good and are inexpensive so...