Ihcho, now that you have the issue narrowed down to the tubes it's time to contact Vintage Tube Services and buy some excellent, reliable, microphonic-free, vintage 6SN7.
Tube preamp noise
I acquired an all tube preamp, and one thing I immediately noticed was that the preamp is super sensitive to any external impact, however small may it be. With a gentle tap on the cover of the preamp is echoed and heard on the speaker even when the volume is set to minimum. Same thing when I tap on the audio rack, other equipments (power amp, cdp, turntable), and even on the floor.
It is just like the sound you would hear from the PA speaker when you tap on a microphone.
Is it common on certain preamps?
Anybody experienced this?
It is just like the sound you would hear from the PA speaker when you tap on a microphone.
Is it common on certain preamps?
Anybody experienced this?
- ...
- 14 posts total
- 14 posts total