Annoying noise

[Waschbärchen]

Hi does anyone has the same issues and solved it, when turning on the mixcast 4 I hear a rustling sound even with nothing connected than my headphones, its very annoying while livestreaming
I even tried multiple headphonee and always same issue
Thank you in advance

 

[dctdct]

Please elaborate "mixcast 4": I don't understand this term in context of the Portastudios

 

[-mjk-]

@dctdct, he's referring to this product: https://tascam.com/us/product/mixcast_4/top

 

[shredd]

Very odd…MY DP doesn’t look anything like that…