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    KT-90 EH vs KT-120

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    Rich

    Posts : 31
    Join date : 2013-01-17

    KT-90 EH vs KT-120

    Post by Rich on Fri Dec 20, 2013 11:07 am

    Hello, I want to know if somebody has tried KT-90 (Electroharmonics as Ei are now almost impossible to get) and if they are better sounding than Tungsol KT-120.
    I actually use KT-120 and like a lot the sound, but want to try KT-90.

    Best regards!

    gener8r

    Posts : 56
    Join date : 2012-04-28

    Re: KT-90 EH vs KT-120

    Post by gener8r on Sun Dec 22, 2013 6:35 pm

    @rich,

    have not tried the kt120s, but I do use the EH kt90s.
    They are placed in a ST70 that has a MKIII power tranny, so the plates a little higher than a normal ST70.  This unit also has the octal driver board.

    I am not a fan of EH tubes.   Having said that, the ST70 mentioned above is by far the best sounding ST70 I have ever built and I attribute that in some measure to the KT90s.

    Rich

    Posts : 31
    Join date : 2013-01-17

    Re: KT-90 EH vs KT-120

    Post by Rich on Mon Dec 23, 2013 9:07 pm

    Thankyou for your reply gener8r, I will give kt-90 a try, so I can also use a 5AR4 rectifier instead the weber wz68 I have.

    Best regards!

    sKiZo

    Posts : 1287
    Join date : 2013-04-01
    Location : Michigan USA

    Re: KT-90 EH vs KT-120

    Post by sKiZo on Tue Dec 24, 2013 12:59 am

    I was using a 5AR4 with my KT120's without issue. If anything I would have expected slightly shorter life on the tube due to the additional load.

    I've since upgraded to a Mullard GZ37. More because I like big bottles than anything else.  clown 



    I knew the GZ37 was big, but I hadn't realized it's actually taller than the KT120's ... thing's built like a tank too ...

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