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NOS Power Tubes...Your Thoughts

Discussion in 'Ampage Area' started by Robbie, Sep 10, 2017.

  1. Robbie

    Robbie Country Gent

    Age:
    64
    Jun 17, 2013
    Sarnia Ontario Canada
    **************************
    I haven't had any issues at all with my 68, but there are lots of cases out there for sure. Since I use pedals very sparingly I don't mind the early break up. I replaced most of the tubes except 6V6's just because. Since I am hesitant enough about Groove Tubes, even rebranded JJ's, I believe I will put my new JJ's in for a while so I have a base line I'm comfortable, or confident, with and then switch to the NOS 6V6's and see if I can hear any big difference at stage volumes.
    For sure will let you know how it progresses.
     
  2. Tony65x55

    Tony65x55 Gretschified

    Age:
    61
    Sep 23, 2011
    The 'Shwa, Ontario, Canada
    We're watching
     
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  3. Gretschtim1

    Gretschtim1 Country Gent

    Dec 4, 2012
    Dundalk, Md
    That was because TV repair men had a bad habit of putting the old tube into the new tube's box and putting it in their tube case.
    They would lose track and after a while wouldn't remember which was which...:).
    My cousin was a repair guy and I watched him do it.
    I thought it was funny but later I found out that some tubes would appear to be bad in one circuit and work perfectly fine in another.
    I've actually witnessed that on occasion in guitar amps.
    Some preamp tubes will appear to be defective in Marshall amps and work perfectly fine in my Fender amps.
     
  4. zebulon

    zebulon Gretschie

    173
    Aug 8, 2017
    oxford
  5. Robbie

    Robbie Country Gent

    Age:
    64
    Jun 17, 2013
    Sarnia Ontario Canada
    ************************************

    Have changed my thoughts on this and will be taking it to my Tech. next week for the NOS 6V6's. I'll keep you posted as to the results.
     
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  6. Synchro

    Synchro As spoken about at Wildwood Guitars. :) Staff Member

    Jun 2, 2008
    Tucson, AZ
    Admin Post
    Since this thread was active, I swapped a set of JJs into my ‘68 CDR and am very pleased with the results. I had to tweak the bias, but it ended up working very well once I had them biased properly.
     
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  7. Tony65x55

    Tony65x55 Gretschified

    Age:
    61
    Sep 23, 2011
    The 'Shwa, Ontario, Canada
    Yessir, JJ makes good 6V6 tubes!
     
  8. Stefan

    Stefan Country Gent

    Jan 20, 2016
    Germany
    It‘s a problem with 6V6 tubes on higher biased amps. The last batches of EH and TungSol got probs with redplating. The JJ 6V6 stays strong, but it‘s got more of a 6L6 character.
     
  9. Ricochet

    Ricochet Gretschified

    Nov 13, 2009
    Monkey Island
    Maybe not a bad thing since the 6V6 was directly derived from the 6L6. They literally set out to make a lower powered and physically smaller 6L6, to use in radios and “portable” electronics.
     
  10. Javier668

    Javier668 Electromatic

    65
    Nov 9, 2017
    Chile
    Use a NOS handle and cord , lot of tone too :D.
     
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  11. Robbie

    Robbie Country Gent

    Age:
    64
    Jun 17, 2013
    Sarnia Ontario Canada
    Since I replaced the 6V6's with new JJ's and tweaked the bias an amplifier I didn't think could sound better in fact did improve...at least to my ears. All other tubes were changed out a while back. Still LOVE this amplifier.
     
  12. Synchro

    Synchro As spoken about at Wildwood Guitars. :) Staff Member

    Jun 2, 2008
    Tucson, AZ
    Admin Post
    That’s pretty much how I see it. They are similar in many ways.
     
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  13. hcsterg

    hcsterg Country Gent

    Feb 13, 2012
    France
    It's what I was ready to write, and markeebee did it already.

    Circa 25 years ago, I bought a 1959 stock of 25 Tung-Sol JAN6L6WGB-5881, and a 1959 stock of 25 Sylvania JAN6L6GAY.

    When tested, the 5881 showed no more than +/-2mA gap in their 72mA nominal plate current, measured in class A condition. Conversely, the 6L6GAY often reached 80 to 90mA and some were prone to thermal runaway.

    A+!
     
  14. Telechamp

    Telechamp Synchromatic

    964
    Oct 20, 2010
    Florida
    Same here. I put a set of JJ's in my '07 DRRI and I can definitely tell the difference between the JJ's and the stock GT's.
     
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  15. Robbie

    Robbie Country Gent

    Age:
    64
    Jun 17, 2013
    Sarnia Ontario Canada
    I've become a BIG fan of JJ 6V6's
     
  16. stevo

    stevo Country Gent

    May 1, 2012
    Atlanta
    JJ 6V6s are well loved, I believe, because they are more like a 6L6. And they also push more midrange, so are great live. Others have already alluded to this.

    If you want real vintage 6V6 tone and response, nothing will beat a real, vintage 6V6. But as has been stated, not all NOS tubes are good. I have a couple of old Sylvania(?) 6V6 pairs and they're fabulous. I get them out every once in a while and plug them in.

    But forget NOS. If you don't already have them, most of what you can buy out there is iffy. Tung Sol "reissue" sound great, my favorite. But JJ when I need to cut through. Or I just keep my amp set up for 6L6.
     
  17. Tony65x55

    Tony65x55 Gretschified

    Age:
    61
    Sep 23, 2011
    The 'Shwa, Ontario, Canada

    Ahem (sound of throat clearing) Ahem... (lol)
     
  18. Robbie

    Robbie Country Gent

    Age:
    64
    Jun 17, 2013
    Sarnia Ontario Canada

    LOL.....without a doubt my Friend, your input has been very valuable to me and willingly accepted.
     
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  19. Tony65x55

    Tony65x55 Gretschified

    Age:
    61
    Sep 23, 2011
    The 'Shwa, Ontario, Canada
    I know there are some good folk that aren't fussed on them, but the JJ 6V6 has significantly improved the sound of many of my amps. I'm sure there are tubes out there that sound even better but at the price point, I haven't heard any others that can touch them. I (touch wood) have not experienced any failures of them and am currently running over a dozen sets of them, including two sets in Traynor YBA-1's where they replace EL-34s. One set in my "stage" YBA-1 is currently five years old and still going.
     
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