Marshall Amps Some of your favorite 12ax7 tubes

Discussion in 'Marshall Amps' started by pittbull, Mar 31, 2020.

  1. pittbull

    pittbull Well-Known Member

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    I’ve tried basically all the new production 12ax7 tubes which are decent tubes but in my opinion there is something about NOS 12ax7 tubes I love the RCA 12ax7 also the EI 12ax7 which are amazing I have a stock of the EI I just sold two to purchase a NOS Mullard .
    .
     
  2. Wenander

    Wenander Active Member

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    found this .... and i cant hear any difference between any.

    but that is maybe youtube compression .. what do you think?
     
  3. pittbull

    pittbull Well-Known Member

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    I could hear I difference,I was rolling 12ax7 tubes yesterday,I put a GE 12ax7 in v1 which has a lot a bass I put the EI 12ax7 back in and it was very nice......big difference
     
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  4. Scumback Speakers

    Scumback Speakers Well-Known Member Sponsor

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    I've stuck with old tubes (NOS/ANOS, used but test as new) for the most part. Sovtek LPS sound decent, but have/had a high failure rate 20 years ago. JJ's sound like a$$, but I understand they make one which doesn't...the JJ ECC83S. I'll have to see if I have one in my pile.

    Past that, these are the three I prefer of the old tubes.

    [​IMG]
     
  5. pittbull

    pittbull Well-Known Member

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    The jjecc83s has been around for a longtime
     
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  6. Scumback Speakers

    Scumback Speakers Well-Known Member Sponsor

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    I've been using the ones I pictured above for so long, and have some in stock, so I haven't had a need to check them out.
     
  7. Trelwheen

    Trelwheen Well-Known Member

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    Collecting and rolling tubes.... an entire little world unto itself. I'm thankful they made bazillions of them in the pre- solid-state days and that they're still relatively plentiful.

    Some of the current production tubes are pretty damn good as well. More options to color the sounds our gadgets make.

    Some observations:
    For Marshall amps, RFTs often work very well for adding drive and aggressive feel. Blackburn Mullards are smooth and sweeter. Modern JJs can help tame a shrill, spikey 1987 or similar. Bugle Boys sound good in everything I've stuck them in....amps, tube overdrives, mic preamps, home audio amps....cake mixers...:fever:

    Other favorites include RCA blackplates, Amperex Globe logos and original Telefunkens.

    A quick note about power tubes:
    I've never really gotten into this side of rolling and collecting tubes, but I'll share a discovery. I replaced the aging GE 6550s in a 2203 with JJ 6550s. It made the biggest difference I've ever heard in changing any kind of tubes. It was no longer able to reach anywhere near the level of aggression it had with the GEs (it gets played at very high volume, btw). I bit the bullet and forked over for a quad of NOS GEs, and lo and behold, all the attitude was there again.
     
  8. MonstersOfTheMidway

    MonstersOfTheMidway Well-Known Member

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    Speaking only of 12AX7 types, here are a few of my favorites in no particular order:

    Eletro-Harmonix 12AX7 (basic version, not the gold-plated pin nonsense)
    Shuguang 12AX7-B
    Shuguang 12AX7-A
    Tung-Sol 12AX7 (basic version, not the gold-plated pin shenanigans)
    JAN-GE 12AX7WA

    If I can include ECC-83 types into the conversation, my favorites in no particular order:
    JJ ECC83-S
    Genalex-Gold Lion ECC83 ("standard" version)

    Note: I generally don't go for NOS. Also, preamp section designs vary in amplifiers, so what might sound good in one amp might not in another, which is, I think, one reason people will have different opinions about the same preamp tube.
     
  9. Melodyman

    Melodyman Active Member

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    Bugle boys, Mullards, Ei Golds, currently in my Origin 50c.. In the JTM 45 its usually RFT, Brimar, Tungsram, Siemens, RCA, GE... all sound better than any current production 12ax7's made today. I tend to do A/B comparisons for v1,v2 and v3. Some have more gain, some have more highs and others more lows..Depends on your repro system and your sonic preferences..
     
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  10. Jethro Rocker

    Jethro Rocker Well-Known Member Premium Member

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    I have a couple EI longs in PI slots. I have and really like RFTs, Mullards, Amperex, etc. It's a subtle difference to my ears but certainly there.
    GEs, RCA, National brand Sino for the 6101, different amps like different tubes. I do notice some premature failure of Tung Sols in PI slots which seems to be par for the course realting to the voltages in PI position.
     
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  11. solarburnDSL50

    solarburnDSL50 Well-Known Member

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    Man I've got telefunkens, mullards, Raytheon black plates, RFTs, matsushitas, darios, rca, ge etc.

    Been using CP's for a while now and found good combos that do it for me. I really like a Ruby 12AX7 AC7HG+(preferred series/TAD 7025S)in V1 then I use different ones from there. Always a great starting tube in that position for me.
     
  12. solarburnDSL50

    solarburnDSL50 Well-Known Member

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    I love 6550's but alas have never had NOS versions. Shit a quad of CP 6550's are pricey can't imagine how much the GE's were.:wow:

    Enjoy their glory!:eddie:
     
    Last edited: Mar 31, 2020
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  13. GIBSON67

    GIBSON67 Well-Known Member

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    I like Mullard I63's and I also used CBS longplates alot.
     
  14. i3oosted

    i3oosted Member

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    Pretty much this. It's amp dependent but for cleans I like Amperex - Herleen Holland factory made tubes or long black plate RCAs. For OD its Mullard all the way(again long black plates). If you want an overall good vintage tube that isnt over priced, try GE long plates... I was QUITE surprised with these. These have a more even sound spectrum without any harshness and still articulate.
     
  15. junk notes

    junk notes Well-Known Member

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    Too many fav's, especially V1. An Amperex Bugle Boy longplate I like, but JAN 12ax7WA, Brimar, ARS, Sylvania, RCA, Shuguang fat bottle, GE, Raytheon... All nice.
     
  16. Jethro Rocker

    Jethro Rocker Well-Known Member Premium Member

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    Oh yeah I have some Raytheon black plates too. I like those ones.
     
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  17. ampmadscientist

    ampmadscientist Well-Known Member

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    The same guys who just finished saying:
    "tubes don't make any difference..."
    Are now the same ones who are saying...:blah::blah::blah:

    But of course tubes make a difference.
    And I use JJ tubes all the time, no problems at all.
     
  18. pittbull

    pittbull Well-Known Member

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    Who were these guys ??
     
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  19. Metroman

    Metroman Well-Known Member

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    50s mC1 Longplate
    Mullard 10M Gold Pins
    Mullard I61
    Mulard I63
    GE 12AX7WA
    [​IMG][​IMG][​IMG]
     
  20. Scumback Speakers

    Scumback Speakers Well-Known Member Sponsor

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    I went through my pile yesterday and found two RCA labeled tubes, with I61 codes and Made In Great Britain on them. I guess I need to start looking at the rest of my stash of Sylvania, etc to see what else I missed.
     

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