I am a 6SN7 addict and hoarder. I have had many microphonic N7s but none that are noisy untouched etc. If you have some microphonic tubes don't worry unless they create a feedback loop.. I would get Sylvania 6SN7WGTs again if that is the sound you liked and they are a good choice in my book. Be aware though that the earliest namely the GTs are the most prone to be microphonic. That said I still seek them and their ilk.
- 212 Posts. Joined 11/2013
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