I have a Yamaha P45 digital piano and various headphones:
DT 770 (250 Ohm)
The P45 has a 6.35mm jack and I tried it with various headphones and adapters/cables.
All headphones had this annoying static or wind noise when I turned the piano. It is constant in volume and not too loud, somewhat quiet. I did notice however that with high impedance headphones (DT 770) the noise was reduced in volume quite a lot.
Im mainly using the ATH M50X though as it is the only headphone I have with a direct 6.35mm jack all my other headphones are 3.5mm with 6.35mm adapters and the adapters always give me crackling issues.
What is this noise called and can I remove it?