Tubes do pick up vibrations and send them through your speakers. There is no doubt about that. This noise is called microphonics. Lightly tap on your buffer and you will probably hear those taps through your speakers. Don't tap on the tubes themselves because sometimes when microphonics are induced the tubes stay microphonic.
If you aren't hearing this noise now I don't know if you would hear a difference in sound quality if you built an isolation platform and put it under your buffer but it might be worth a try.
Tube dampers are also used to inhibit microphonics. These vary from rubber-like O-rings that you can buy on ebay to more sophisticated devices like Herbie's tube dampers.
If you aren't hearing this noise now I don't know if you would hear a difference in sound quality if you built an isolation platform and put it under your buffer but it might be worth a try.
Tube dampers are also used to inhibit microphonics. These vary from rubber-like O-rings that you can buy on ebay to more sophisticated devices like Herbie's tube dampers.