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Vacuum Tube of the Future?

Discussion in 'Pro Audio Equipment' started by bouldersound, Jan 30, 2015.

  1. bouldersound

    bouldersound Real guitars are for old people. Well-Known Member


    kmetal likes this.
  2. pcrecord

    pcrecord Don't you want the best recording like I do ? Well-Known Member

    That is interesting! The only thing is, it better sound very good because unlike a tube, we won't be able to swap them easily to change the sound. (with different models)
    hueseph likes this.
  3. DonnyThompson

    DonnyThompson Distinguished Member

    This is quite intriguing:

    "The unique design and state of the art Japanese production facility ensures the Nutubes are built to the highest standard and offer up to 30,000 hours of continuous operating life.
    The high reliability means that it can be attached directly to the circuit board with confidence knowing that it will not need to be replaced regularly like a 12AX7..."
  4. pcrecord

    pcrecord Don't you want the best recording like I do ? Well-Known Member

    Is it me or 30 000 hours is not a lot.
    Let's think about a big facility : 30 000/ 40hours a week = 750 weeks, 1000 / 50 weeks/year = 15 years. Of course 15 years is a lot more that a tube's life but If I have to buy another 5000$ unit because of that nutube end of life... I'd rather change tubes.

    Of course 30 000 years in my home studio is more then a life time ;)
    hueseph likes this.
  5. DonnyThompson

    DonnyThompson Distinguished Member

    Assuming that you'd be using it a full 40 hours a week, every week, for 15 years? I'd say that's quite a bit more time than you'd get from a standard valve.

    I doubt that I'll even still be here in 15 years, so for me that's not a real deal-breaker. ;)
  6. pcrecord

    pcrecord Don't you want the best recording like I do ? Well-Known Member

    I'm thinking of units like LA2A and others that became standards that are used everyday, those that you want to keep for life. Don't forget that when it's powered but not used it still counts hours. Unless you power your units one by one when you need them. Some big studio still work 80 hours a week you know ;)

    I'm just thinking that if the big studios make the calculation the may hesitate to buy. If they do, no records will be made with them and so less publicity and selling..

    But hey, I do 10hours a week in my studio.. I'd go for it any day if it sounds right !!
  7. bouldersound

    bouldersound Real guitars are for old people. Well-Known Member

    There are IC sockets for solid state devices. Doing the same for this part should be trivial.
  8. Reverend Lucas

    Reverend Lucas Active Member

    Agreed. This can be accomplished quite inexpensively, and manufacturers would probably be wise to do so, if only for the sake of perception. In reality, having to solder one out every fifteen years in extreme cases (or hiring a tech to do it) wouldn't be the end of the world. Swapping out models for tones would be another issue.

    I'm interested in hearing these. I hope they're not dismissed as 'not real tubes', and that people hear them out. Sound SHOULD be what matters, right?
  9. Kurt Foster

    Kurt Foster Distinguished Member

    most modern devices are surface mount. these will also undoubtedly be as well. i don't think thy will be suitable for socket mounts.

    once you get to this level of miniaturization, the devices are so inexpensive it's cheaper to replace than to service. i see them as an interesting direction for guitar amps to go ..... tube amps cheep!
  10. Reverend Lucas

    Reverend Lucas Active Member

    That picture looks to me like a through-hole package. Maybe not. I'm assuming there are hidden leads on the other side, or is it some sort of crazy single inline package? Also, I can't tell if it's a mock-up cutaway to reveal its guts, or if they actually look like that. I wonder if you can get any 'tube glow' out of them;)
  11. Kurt Foster

    Kurt Foster Distinguished Member

    i can't think of any reason why they would do that. no manufacturers make through the hole boards anymore.
  12. Reverend Lucas

    Reverend Lucas Active Member

    I'm not disagreeeing with you, Kurt. There's technically little sense to use through-hole components anymore. But, guitarists and the audio community tend to be weary of 'newer' technologies. Op amps for example, sometimes get a bad rap. Sometimes these concerns are valid - tubes give harmonic distortion that most consider pleasing compared

    I'm off topic. I just think they look like through-hole leads. I could be wrong.
  13. Kurt Foster

    Kurt Foster Distinguished Member

    they could be. it would be cool to be able to switch them out ....
  14. bouldersound

    bouldersound Real guitars are for old people. Well-Known Member

    There's nothing preventing an SMT board from having a socket. SMT chip sockets are already available so it's just a matter of making one for this form factor.
  15. pan60

    pan60 Active Member

    Interesting, time will tell.

    Many still do. Mostly smaller manufacturers though.
    But it is getting more rare every day even with the small guys.
  16. Jensenmann

    Jensenmann Active Member

    There´s a lot of marketing BS in this announcement. We´ve had 20000hrs longlife tubs for broadcast and military use since the 70s, a few types even earlier. Production of these tubes went down, when all serious tube factories were sold to Russia, China, Yugoslavia etc. 30000hrs life expectancy for this new tube is not that much better than what we already had.
    Promoting a tube for it´s rich harmonic content (spell distortion) is a joke. If a tube circuit is properly designed then it has very low distortion. If you overdrive it, then it will distort, of course. If you overdrive a transistor then it will distort faster and harder hence even "richer harmonic content" than a tube..... Yuk
    Maybe they should promote what they are planning to do with it instead of putting out marketing blahblah.
  17. Reverend Lucas

    Reverend Lucas Active Member

    I didn't realize tubes with that kind of longevity existed. Good to know, thanks, Jensenmann.

    Sure, this press release was written by a marketing department, but I don't think marketing a tube as having rich, harmonic content is invalid. I don't think Korg is denying that transistors distort when overdriven, but describing harmonic content as 'rich' has more to do with HOW tubes distort in comparison to transistors. i.e. more dominant even order harmonics in tubes that many perceive as pleasing, compared to more odd order harmonics. I'm on the same page with you on that 'rich' is one of those adjectives used in audio that people take to mean a number of things. A good word for marketing, not for engineering.
  18. audiokid

    audiokid Staff

    This is going to create change. here we go again. :eek:
  19. DonnyThompson

    DonnyThompson Distinguished Member

    And yet, it's become standard nomenclature for engineers everywhere... along with "warm", "silky", "airy", "punchy" "muddy", "frumpy" "glassy", along with the rest of the Seven Dwarves. LOL
    Kurt Foster likes this.

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