Yes, I've tried it on two computers, a desktop and a laptop, both connected directly and it's the same. Do you think a dedicated usb PCI card would overcome this?

Hello, I've just received my iBasso D2+ Boa and I'm quite impressed. However when I use it as a sound card on my PC I can hear squeaks, for instance I have an external HDD on the same USB hub, when I'm accessing the HDD and the PC is reading data from it, I can hear squeaks in my headphones...