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Cogito
PostPosted: September 4th, 2016, 12:48 pm 
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Nice comparison.

http://geargods.net/wp-content/uploads/ ... n-2013.pdf
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SoundMods
PostPosted: September 4th, 2016, 1:01 pm 
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I realize that what I am about to recommend is expensive -- but any amplifier designed around the 6L6 will be transformed with the the KT-66. The best after-market KT-66 in my experience is the Shuguang product as it will get you the closest to the Genalex KT-66. However, there is nothing on this earth that compares to the original Genelex KT-66 with the carbon-coated bottles. I have that experience with them and I must say it was eye opening as well as ear opening.

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Cogito
PostPosted: September 4th, 2016, 2:18 pm 
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You mean these?
https://www.amazon.com/Shuguang-Treasur ... =kt66+tube

Trying out Russian Gold Lion KT88s. They are very detailed and dynamic but little thinner mids and bright top end. Doesn't seem like a good tube for 511Bs.
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SoundMods
PostPosted: September 4th, 2016, 5:40 pm 
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The Treasures are probably better than the standard Shuguang KT-66s because of the carbon coating, but the standard Shuguang KT-66s are damn good and less expensive.

The Russian KT-66s are OK, but the Chinese make a more musical product that gets close to the Genalex.

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Cogito
PostPosted: September 4th, 2016, 8:19 pm 
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15 year old Shugaung KT88s which came with Cary Superamp sound much better than the new Genalex KT88s in my system. Shall try the new shugaungs.
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SoundMods
PostPosted: September 4th, 2016, 10:07 pm 
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The "new" Genalex KT-88s are nothing more than branded Russian tubes from the Reflector plant. When I had my Jadis I made the mistake of trying the Russian Genalex tubes. UGH!

It made the Jadis sound like a 1970s Japanese receiver.

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