I have an AT4047SV and have always noticed that it seemed like a had a higher noise floor than I would like. However, it has started making all kinds of crazy sounds recently and I'm not sure what the problem is. I have uploaded a clip on sound cloud so that you can hear what I'm talking about. If anyone has any thoughts on what could be causing it I would appreciate the help.
Second to this, I'm having a strange grounding issue with an SM57. If I don't touch the chassis of the mic I don't hear any buzzing or if I touch the mic and ground myself with a piece of equipment in line the buzzing goes away. I switched out several cables through my entire system (XLRs, balanced vs unbalanced) and nothing seemed to help.
Mic (At4047SV / SM57) > ART Voice Channel > balanced TRS cable > Focusrite Scarlett 18i8 2nd gen > Mac Mini
Here is the clip of the AT4047 making the noise: https://soundcloud.com/jared-holton/mic-noise
Thank you for thoughts and ideas in advance!