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    Average Predictied GZ37 Lifetime?

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    LeGrace
    LeGrace

    Posts : 268
    Join date : 2016-08-07
    Location : Ontario, Canada

    Average Predictied GZ37 Lifetime?

    Post by LeGrace on Sun Feb 10, 2019 3:47 pm

    These are big tubes, are they like power tubes where 3000 hours is a reasonable assumption?
    sKiZo
    sKiZo

    Posts : 1521
    Join date : 2013-04-01
    Location : Michigan USA

    Re: Average Predictied GZ37 Lifetime?

    Post by sKiZo on Sun Feb 10, 2019 5:24 pm

    I don't count hours here, but I can say I got several years of hard rockin' on the current one. That's also driving a quad of KT120's most of that time. Also picked up on a spare while I had the chance before the price bloomed a bit back.

    bbqjoe
    bbqjoe

    Posts : 99
    Join date : 2018-12-03

    Re: Average Predictied GZ37 Lifetime?

    Post by bbqjoe on Sun Feb 10, 2019 10:46 pm

    sKiZo wrote:I don't count hours here, but I can say I got several years of hard rockin' on the current one. That's also driving a quad of KT120's most of that time. Also picked up on a spare while I had the chance before the price bloomed a bit back.


    I'm still highly impressed with your work on this amplifier!
    sKiZo
    sKiZo

    Posts : 1521
    Join date : 2013-04-01
    Location : Michigan USA

    Re: Average Predictied GZ37 Lifetime?

    Post by sKiZo on Mon Feb 11, 2019 6:56 pm

    More importantly ... so am I !! ;-}

    I've also got a Mullard GZ34 here that racked up quite a few miles before I scored the GZ37. At the same time, I ended up smoking a couple Chinese tubes fairly quickly. Lot depends on how well built (or overbuilt?) the tube is.

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    Re: Average Predictied GZ37 Lifetime?

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