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GRAAF GM50b KT88z or KT120 Cryo

Hello,
I owned a GRAAF GM50b. First I have replaced the 6922 with NOS e88CC Tesla Gold pins, and the improvement in sound was noticiable. Later I have change the 6h30 sovtek with EH 6h30pi gold pins, and another step up.
Now I am planing to replace the KT88 with KT88z or KT120 tung sol.
I do not know if I use the KT120 the Graaf will work fine (or need any hardware modify), or if will be better go with KT88z Aniversary (I have see many good recomendations for this KT88z)
Any help will be welcome ;-)
Regards
savamy

Showing 1 response by samsca

samsca
32 posts
 
I have a Graaf gm50b with kt120's.
it drives a pair of bookshelf totem model one's 87 sensitivity.

Do you think I could try using it in triode/no feedback.

Is this an easy modification to do?
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