7193 tube is equivalent to 6J5GT/6C5/half 6SN7 single tertiary tube| | - AliExpress
Linlai Tube E-6sn7 Vacuum Tube Replacement 6sn7/cv181/6n8p/6h8c/5692 Original Accurate Matching Tonal Balance And Smooth - Home Theater Amplifiers - AliExpress
RCA JAN CRC 5692 6SN7 tube Red Base | Reverb
6SN7 Equivelents | diyAudio
JJ Electronic - 6SN7
The 6SN7 Identification Guide | Headphone Reviews and Discussion - Head-Fi.org
VinylSavor: Tube of the Month : The 6SN7
6SN7 - Wikipedia
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Some fun tube rolling 6SN7 tubes. | Home Theatre General Discussion