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Mullard 12AX7 Preamp Tube

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The Mullard 12AX7 Preamp Tube delivers a large sound stage with excellent detail. Factory selected for low noise and minimum microphonics....Click To Read More About This Product

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The Mullard 12AX7 Preamp Tube delivers a large sound stage with excellent detail. Factory selected for low noise and minimum microphonics.


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Reviews
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Review Snapshot

by PowerReviews
Mullard12AX7 Preamp Tube
 
4.2

(based on 17 reviews)

Ratings Distribution

  • 5 Stars

     

    (13)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (3)

78%

of respondents would recommend this to a friend.

Pros

  • Good quality (6)
  • Improves sound (5)
  • Easy to use (3)

Cons

No Cons

Best Uses

  • Concerts (4)
  • Practicing (3)
    • Reviewer Profile:
    • Experienced (6)

Most Liked Positive Review

 

Good Tube

I have to agree with the guy who said its a waste of time and also misleading to compare these to the Phillips made Mullards of the 50's and 60's; NOTHING ever...Read complete review

I have to agree with the guy who said its a waste of time and also misleading to compare these to the Phillips made Mullards of the 50's and 60's; NOTHING ever made is as good as those tubes were. That said, this Mullard from New Sensor is a pretty good tube. Somewhat mild in the gain department,(but not too mild) very clear overall presence. I do hear just a bit of the sound of an original phillips Amperex in these when they are over driven - good detail with a bit of the crunchiness and bite of those awesome 12ax7's. To clear up the "rebranding" confusion, these ARE NOT "rebranded" tubes. These tubes are NOT sold under any other brand name.They are made by New Sensor (an American Company) in Russia. New Sensor Owns the Mullard, Tung - Sol, Electroharmonix, Svetlana and Sovtek brands, just as Royal Phillips once owned Amperex, Mullard, Valvo and several other brand names. In my opinion and based on my trial and error experience, This is one of the better sounding 12AX7 tubes currently being made. I think it's probably best suited to Hi-Fi systems but i like them and use in them in My guitar amps. To me, they sound best in Fender and VOX amps, where a very clear clean tone with a bright high end is wanted. They sound good in Amps driving EL84 power tubes.

VS

Most Liked Negative Review

 

RUN AWAY

Marshall TSL60 from MF in 2003. Tried reissue Mullard pre and power tubes. I strongly suggest you try anything else. They just don't work in this head. My shop thankfully took them back...Read complete review

Marshall TSL60 from MF in 2003. Tried reissue Mullard pre and power tubes. I strongly suggest you try anything else. They just don't work in this head. My shop thankfully took them back and went with the original Marshall spec Winged C SED EL34's. Worth every penny. Ended up putting my original Marshall brand white logo ecc83's back in and it has never sounded so good. I had no idea it was so sensitive to changing tubes. I'm told the GT12ax7c is an excellent choice and I will buy from MF... the shipping is free! Really a buzz to hear this through a 1960av...naturally from MF. They might work great for your amp but not for me.

Reviewed by 17 customers

Displaying reviews 1-17

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(9 of 9 customers found this review helpful)

 
5.0

Great tube

By Guy-nv9XO

from Me.

See all my reviews

Comments about Mullard 12AX7 Preamp Tube:

Ive been running Old, original Phillips type 12AX7's in my DSL50 for years. i have a nice stash and ive always looked down on the new 12AX7 tubes as junk. Out of curiosity i bought 3 of these Mullards and Im VERY happy with the sound im getting. In my experience the problem with new manufactured preamp tubes is that, even if they have a decent tone, they are limited in range and detail. NOT SO WITH THESE MULARD RI. im getting a very full range with the pronounced, biting midrange i love in the originals. the note definition is almost as good as the dutch amperex. Im going to buy some more of these, plus some Tungsols and some JJ ECC803's and give the new tubes a closer listen.

(8 of 8 customers found this review helpful)

 
5.0

Good Tube

By Marco

from Baltimore

See all my reviews

Ask me a question

Comments about Mullard 12AX7 Preamp Tube:

I have to agree with the guy who said its a waste of time and also misleading to compare these to the Phillips made Mullards of the 50's and 60's; NOTHING ever made is as good as those tubes were. That said, this Mullard from New Sensor is a pretty good tube. Somewhat mild in the gain department,(but not too mild) very clear overall presence. I do hear just a bit of the sound of an original phillips Amperex in these when they are over driven - good detail with a bit of the crunchiness and bite of those awesome 12ax7's. To clear up the "rebranding" confusion, these ARE NOT "rebranded" tubes. These tubes are NOT sold under any other brand name.They are made by New Sensor (an American Company) in Russia. New Sensor Owns the Mullard, Tung - Sol, Electroharmonix, Svetlana and Sovtek brands, just as Royal Phillips once owned Amperex, Mullard, Valvo and several other brand names. In my opinion and based on my trial and error experience, This is one of the better sounding 12AX7 tubes currently being made. I think it's probably best suited to Hi-Fi systems but i like them and use in them in My guitar amps. To me, they sound best in Fender and VOX amps, where a very clear clean tone with a bright high end is wanted. They sound good in Amps driving EL84 power tubes.

(5 of 11 customers found this review helpful)

 
1.0

Mullards a bust

By Davo

from So cal

See all my reviews

Comments about Mullard 12AX7 Preamp Tube:

So I got this as a replacement for the OEM 12ax7 in my 5 watt class A amp-the amp has only one preamp tube so its tone has a signifigant effect on the overall sound. This Mullard tube is a long plate design which many feel has a warmer tone while being potentially subject to more hum and microphonics. After nearly a month with this tube I am not happy with its tone. It is fairly sterile and low gain-which is frankly my biggest problem with newer tubes. However in this regard it sounds no worse than most current production tubes. My biggest issue with this Mullard is its buzz. This tube appears to have NO shielding. You cant tell everything by looking at a tubes construction but the buzz is quite clear even at lower gain settings. I tried it in another amp and even a preamp and the buzz remains. The one good thing about this experience, however is that I have been "inspired" to purchase only vintage/NOS tubes. I found a bunch of pulled Sylvanias, RCA's, and GE's for a song and have been having a blast-its a huge improvment. In general they sound better, have NO noise, and signifigantly more gain-and longer life. I have found a few that sound wonderful in pretty much any amp I put them in-and even NOS tubes are not much more than the 20 bucks this tube went for.This is not your pops Mullard. Its simply a rebranded, over priced, poor sounding tube.

(5 of 5 customers found this review helpful)

 
5.0

sweet sounding tube for bass

By raxx man

from oklahoma

See all my reviews

Comments about Mullard 12AX7 Preamp Tube:

curently running a vintage tb raxx(peavey)with 2 12ax7. it had sovtech wa's in it, decent sounding at best. tryed these and the tone noticeably inproved. very clean, musical sound. then i turn up the gain and the overdrive was impresive. i dont use distorsion much but the clean is very sweet. i would rate these as a mediem gain for you guitar guys, was considering tung sol but for bass i didnt think i needed high gain, glad i went with these!

(4 of 4 customers found this review helpful)

 
5.0

Best Preamp tube for me

By Otto Matick

from Seattle WA

About Me Professional Musician

Pros

  • Good Quality
  • Improves Sound

Cons

    Best Uses

      Comments about Mullard 12AX7 Preamp Tube:

      This is my personal favorite preamp tube with the Tungsol being a close second. I've used the Mullard 12ax7 in many amplifiers. The Mullard 12AX7 improved tone, gain and general sound quality in every use.

      I use this tube in the following amps:

      Fender 100 watt Super Sonic Twin Combo (significant improvement over stock Groove Tubes), Peavey Classic 50 Head, Peavey Valve King 20 MH (improvement over stock Ruby's), Ampeg J12-T Jet II (way better than stock Sovteks), Egnator Renegade 65 watt head (better than Sovtek 12ax7wa), Orange Micro Terror.

      (4 of 5 customers found this review helpful)

       
      5.0

      Better than most New

      By Rich-tmDnN

      from Me

      See all my reviews

      Comments about Mullard 12AX7 Preamp Tube:

      This tube Has a nice clear soundstage and good Overdrive crunch but not its really super high gain like the JJ's or the Tung Sol. I rated this tube against all other NEW production, not against Blackburn England Yellow Labels, or West German Telefunkens, as some people obviously do. No these Russian made "Mullards" arent up to the Old standard, but Ive comapared it head to head against the Chinese 7025 "Mullard copy" , supposedly I63 type, and this Long plate from New Sensor is superior in every way. This Mullard RI captures a bit of the orginals Detail and smooth overdrive whereas the Chinese 7025 sounds exactly ( to my ears) like the 12AX7A. A lot of drive and not much else. I recommend this tube.

      (4 of 4 customers found this review helpful)

       
      5.0

      Great Upgrade to My Amp

      By beejayiam

      from California

      See all my reviews

      Ask me a question

      Comments about Mullard 12AX7 Preamp Tube:

      I bought these tubes to cleanup my stock Bugera V22 guitar amps sound and did they ever! If you're looking to get those bell like tones when you pluck those strings these will really help! The clarity is just spectacular, IMO.

      (3 of 3 customers found this review helpful)

       
      5.0

      One of Best New Production

      By Solerso67

      from baltimore

      See all my reviews

      Comments about Mullard 12AX7 Preamp Tube:

      Ive used these tubes in various amps, in all preamp stages and im definately impressed. In The V1 position in my Marshalls they behave very much like an original Amperex. They have a somewhat "flat" sound, not much coloration,with a lot of detail and power just like the original. In the V2 position Overdrive distortion is definately smoother and easier to listen to than most new production, and a lot of old prodcution as well. Very pronounced highs, and high mids. Cuts right through with great detail but still lots of saturation. In an amps that are naturally bright these might be a bit too trebly; again just like the original Amperex. This has beome of of my three favorite New prodcution tubes. The other two are the Tung-Sol 12AX7 and the JJ ECC803.

      (2 of 2 customers found this review helpful)

       
      5.0

      Powerful with medium noise

      By Robby

      from Oskaloosa, IA

      About Me Experienced

      See all my reviews

      Verified Buyer

      Pros

      • Easy To Use
      • Good Quality
      • Improves Sound

      Cons

        Best Uses

        • Practicing

        Comments about Mullard 12AX7 Preamp Tube:

        I bought a Mullard 12AX7 to replace a China 12AX7B for the V1 in my Vox AC15C1. The volume pot in the Top Boost produced an intermittent crackling noise, and by process of elimination I suspected the V1 tube. An YT video on replacement tubes for this Vox amp showed that Mullard was the next best brand for V1. After installation however, I heard unacceptable noise and microphonics even though the tube had improved tonal clarity. Musician's Friend provided a replacement and it was the answer. I like the Mullard 12AX7 because the tone from my Vox amp was much better than from the original China 12AX7B in terms of gain and frequency response.

        (2 of 2 customers found this review helpful)

         
        1.0

        RUN AWAY

        By nocaster

        from South Dakota

        About Me Experienced

        See all my reviews

        Pros

        • None

        Cons

        • Didn't Work 4 Me
        • Not Functional
        • Poor Quality

        Best Uses

        • NONE
        • Try Another

        Comments about Mullard 12AX7 Preamp Tube:

        Marshall TSL60 from MF in 2003. Tried reissue Mullard pre and power tubes. I strongly suggest you try anything else. They just don't work in this head. My shop thankfully took them back and went with the original Marshall spec Winged C SED EL34's. Worth every penny. Ended up putting my original Marshall brand white logo ecc83's back in and it has never sounded so good. I had no idea it was so sensitive to changing tubes. I'm told the GT12ax7c is an excellent choice and I will buy from MF... the shipping is free! Really a buzz to hear this through a 1960av...naturally from MF. They might work great for your amp but not for me.

        (2 of 3 customers found this review helpful)

         
        1.0

        HORRIBLE TUBES

        By Ryan

        from Los Angeles, CA

        About Me Professional Musician

        See all my reviews

        Pros

          Cons

          • Not Functional
          • Poor Quality

          Best Uses

            Comments about Mullard 12AX7 Preamp Tube:

            I purchased these tubes to use in my Matchless Phoenix amp, which takes three 12ax7's in the pre-amp and phase inverter. The owner of Matchless, Phil Jamison advised me not to use these tubes because they were not of acceptable sound quality and prone to failure. I was curious though how they compared to NOS Mullards, so I got them anyway.

            Sure enough, after installing them, they sound lifeless and boring. Very flat, tonally. Even in a bright amp, they just simply sound bad. There is nothing pleasing about the tone of these tubes.

            Much to my surprise, the amp builders at Matchless were correct and the tubes both FAILED within three days of using them. I slowly started noticing a loss in volume each time I played. Now, they are both completely dead. Just a dull, faint muddy/thin tone can be heard when cranking the volume up.

            Terribly disappointing. I had high hopes for these tubes being possibly decent. I can only give one word of advice now... AVOID.

            (2 of 2 customers found this review helpful)

             
            5.0

            Great balanced sound

            By GTO Man

            from Texas

            See all my reviews

            Comments about Mullard 12AX7 Preamp Tube:

            I have one of these in my V1 slot of my Blues Jr. and it performs very well. The sound is very balanced with good lows and highs. I didn't like it in the phase inverter slot as it picked up some hum from the power tubes but I think it is due to the long plates and high output. I would compare this tube to the Tung-Sols as they both sound very good, much better than sovtek or Groove Tubes. It has worked well without any ticks or noise.

            (1 of 3 customers found this review helpful)

             
            5.0

            MULLARD TUBES ARE A GREAT TUBE

            By BUTTERBALL

            from Fla.

            About Me Experienced

            See all my reviews

            Verified Buyer

            Pros

            • Good Quality

            Cons

              Best Uses

              • Concerts

              Comments about Mullard 12AX7 Preamp Tube:

              I USE THEM ALL THE TIME GREAT JOB

               
              5.0

              MULLAR PREAMP TUBE

              By jorual

              from Valencia, Spain

              About Me Experienced

              Verified Buyer

              Pros

              • Good Quality
              • Improves Sound

              Cons

                Best Uses

                • Concerts

                Comments about Mullard 12AX7 Preamp Tube:

                Nice quality/sound relation in a very appropiatte price.

                Service and delivery comments:

                My delivery was no on time.

                 
                5.0

                Great crisp sound!!

                By Bass Player Joe

                from Grand Rapids, MI

                About Me Experienced

                Verified Buyer

                Pros

                • Easy To Use
                • Good Quality
                • Improves Sound

                Cons

                  Best Uses

                  • Concerts
                  • Practicing

                  Comments about Mullard 12AX7 Preamp Tube:

                  I use this tube in my Behringer MIC200 pre-amp to create a strong signal going into my amp since I have a passive bass. The stock Bugera were alright, but they blow if you ever go above unity. I did a side-by-side comparison of the Mullard 12AX7 with the Tung-Sol 12AX7, and the rich low-mids of the Mullard tubes make the sound crisp and punchy.

                  I would recommend this tube for bass or for a clean channel on a guitar amp.

                   
                  4.0

                  High gain preamp

                  By Bill

                  from Joliet, IL

                  About Me Experienced

                  See all my reviews

                  Verified Buyer

                  Pros

                  • Easy To Use
                  • Functional
                  • Good Quality

                  Cons

                    Best Uses

                    • Backup
                    • Concerts
                    • Practicing

                    Comments about Mullard 12AX7 Preamp Tube:

                    High gain tube. At first I thought it was a little too much for my application. It found a nice home in V3. Tube is one of several good options for the correct position in several amps. Inexpensive to try if you want to alter your sound.

                     
                    5.0

                    Huge Improvement for my 30W amp head

                    By chetzki

                    from Texas

                    About Me Novice

                    See all my reviews

                    Verified Buyer

                    Pros

                    • Improves Sound

                    Cons

                      Best Uses

                        Comments about Mullard 12AX7 Preamp Tube:

                        I replaced all (5) of my original Egnater 30W amp head pre-amp tubes with these Mullard's. The original tubes gave me a "muddy" sound. These tubes give me better sound definition. More clearly defined bark and growl and brighter. Hard to describe but night and day difference. Before I changed these out there were very few settings on my distortion channel that I liked. Now I can clearly hear the differences when I change tone, gain, power, etc. This is a great upgrade! Worth every penny. I'm plugging in with a Gibson Les Paul Studio and ESP LTD with EMG pickups.

                        Displaying reviews 1-17

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