headset Acer headset has quiet but irritating static sound

[Polyzi]

So I bought an Acer Galea 350 headset and I can use it with an USB converter thing(USB Gaming Box) where I can switch between three modes. When I use this converter i start to hear a quiet static sound and sometimes it makes everything sound ear rape until I reconnect it or it starts to blast a loud "explosion" type of sound until I reconnect it. When i use the headset without the USB converter everything works fine but i rather use it with the converter. I tried to reinstall the driver, the HD audio manager and changed from 24 bit, 98000 Hz to 24 bit 48000 Hz. It mostly happens when the CPU reach ~60%.