National Union 6SN7GT Black Glass

1 Star2 Stars3 Stars4 Stars5 Stars (32 votes, average: 4.19 out of 5)
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Raytheon 6SN7GT Black Glass Flat Plates

1 Star2 Stars3 Stars4 Stars5 Stars (4 votes, average: 4.50 out of 5)
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“Like the Tung-Sol a little sweeter, nice balance of detail and timbre” Read

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Ken-Rad 6SN7GT Clear Glass

Despite many discussions on the topic of Black vs Clear, there are no difference – sound wise – between clear glass and black glass versions of Ken-Rad 6SN7 tube. I tried to find them in multiple amps, but failed. Read our Ken-Rad 6SN7 Black Glass review

Sylvania 6SN7GT black flat plates

1 Star2 Stars3 Stars4 Stars5 Stars (5 votes, average: 3.60 out of 5)
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“Good high end extension, a warm and full midrange and decent bass extension. Imaging is precise and the perceived staging is wide. What could be better?”

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