best output tubes for a jtm45 reissue

Discussion in 'Amps and Cabs' started by twangbanger, Jun 13, 2006.


  1. twangbanger

    twangbanger Supporting Member

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    Got a jtm 45 reissue circa '97 coming and it has the original sovtek 5881's in it . any input into a tube upgrade and a good source for them. Thanks Rob
     
  2. HeeHaw

    HeeHaw Member

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    be prepared for some flubby bass.
     
  3. CitizenCain

    CitizenCain Member

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    I like the Valve Arts KT66s in my Ceriatone JTM45. You can get them almost anywhere, check KCA NOS Tubes
     
  4. twangbanger

    twangbanger Supporting Member

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    HeeHaw is that just the reissue or do you find that to be true with most jtm45's?
     
  5. jgyn

    jgyn Member

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    I have 6L6s in my 1989 reissue. Svetlanas.
     
  6. 69strat

    69strat Member

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    I had kt66,s in my rockytop. I always felt the bass was a little too much. I played a marshall reissue bluesbreaker at G.C. and thought the bass was tighter. I noticed that it had 6l6,s in it. I replaced the kt66,s with svet 6l6,s and never looked back. I feel they are much sweeter and have a much more managable bass.
     
  7. 59model

    59model Member

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    How about a pair of NOS Tung Sol 5881`s? Nice fat midrange from those. The Valve Arts KT66`s are great too like CitizenCane mentioned. Then of course an output xformer swap and the filter caps to bring it more to spec. Great amps and not to tough to mod, even though it`s PCB. Good luck!
     
  8. twangbanger

    twangbanger Supporting Member

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    I just happen to have a set of tungsol 5881's in my bassman> Hmm probably will check that out! Didn't even think about the 6L6 idea either.Probably will get a set of the valley arts kt66's also. Thanks
     
  9. mignano

    mignano Member

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    I'm a KT66 nut, and that's the archetypal Bluesbreaker sound. If you don't want to drop $400 some odd on NOS GEC's, try the Saratov KT66's or Tung Sol RI's. They're both excellent tubes ;)
     
  10. sabbath90

    sabbath90 Member

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    how are the new tung sol kt-66's compared to valve arts?
     
  11. mignano

    mignano Member

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    the valve arts are re-labelled Shuguangs i believe, which I like better than Sovteks. the Saratovs are next on my list, and I feel that the Tung Sols top them all for new production KT66's. the Shuguangs seem to be the most popular KT66's out there, but to my ear the Tung Sol RI's are superior in terms of clarity and harmonic content.
     
  12. Dendog

    Dendog Member

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    JJ Teslas 6L6's, 12ax7's. Excellent non-NOS tubes.

    Eurotubes has good prices, fair and fast shipping. The guy is not a tech but he knows tone, amps and tubes.

    https://ssl.eurotubes.com/index.htm
     
  13. HeeHaw

    HeeHaw Member

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    The reissues I tried was pretty flubby, yet had some nice cleans. I'm not sure about the origionals.
     

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