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In Reply to: RE: Substitute El-34 for KT 88s and 120s posted by AbeCollins on October 20, 2014 at 20:07:10
I've heard KT 120's described as EL 34's on steroids. I've preferred the results using either KT 120's or Genalex KT88's over any EL 34 I've tried in either of my Bob Latino amps. The bass, for one, was better in both cases. As always....YMMV.
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I've had EL34, KT90, and KT120 tubes in my integrated amp driving the Thiel CS2.4 speakers. The EL34s didn't cut it but that was due to insufficient power.
I need to go back to the EL34s and give them a try again since I'm driving the more efficient Tannoys but I have no issues with the KT120 sound. I love 'em and they're powerful.
I wanted to try KT150s but Rogue told me that I wouldn't get good results using them in the Cronus Magnum..... and they're rather pricey.
I started out with KT90s in my Rogue M-180s before going to the KT120s, and I sometimes wonder what other power tubes would sound like.
no adjustments needed, except for rebias ?
If so I may try a pair in my home brew.
I believe they are pin compatible but the KT120 might draw more filament current. The specs I saw via internet search showed KT88 nominal filament current as 1.6A. The KT120 spec I saw said 1.65A to 1.95A.
If your filament transformer / supply is up to the task, it should work.
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