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FS: (3) KT-90 EI Type III from Upscale Audio


doctorcilantro

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This a good deal folks. KT90/99 are way stronger, and better sounding (IMO) than KT88. Run these in triode for a tasty treat.

Why are you selling these anyway? Upscale should be able to sell you one with similar matched value as the broken one. Doesn't the Quicksilver have bias/balance adjustment? If so, it really shouldn't make any difference to replace one with only 200 hours on them.

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Kevin is low on these tubes...the closest match he has is too far off in bias. I'd keep them but I'm hoping somone has a need for three, I don't.

I wish I could keep them or find a match for these, I think these are all matched to a bias of around 48.

DC

This a good deal folks. KT90/99 are way stronger, and better sounding (IMO) than KT88. Run these in triode for a tasty treat.

Why are you selling these anyway? Upscale should be able to sell you one with similar matched value as the broken one. Doesn't the Quicksilver have bias/balance adjustment? If so, it really shouldn't make any difference to replace one with only 200 hours on them.

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  • 3 weeks later...

I'll add a comment that I bought some KT-90's when I had my little Jolida amp. Someone on the forum had made this suggestion.

After a slight rebias, they WERE a more "stout" tube, offering a bit more bold bottom end than the stock tubes did. I definately liked the change in tubes.

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