Hi, I receved a pair of HS70 Pro today and when i first used them there was a quiet buzzing sound on the left ear. I tried reinstalling the frameware multible times, but the sound is still here. It sounds like a 120Hz square wave. Is that normall? Can anyone help?
edit: the sound is only there when there is a wireless connection. It change frequencies when i turn mic on and off and when i change the mic volume. It doesn't sound like a wireless backround noise and i don't think it is because it's only on the left ear.
I found some other treads about similar problems on the Hs70 and Hs70SE.
Thank you
SK