I'm college kid at school right now, so I have a simple recording setup. I record my guitar and my bass through my Focusrite Scarlett 6i6 USB audio interface in my DAW on my laptop. Now for the problem. When monitoring and recording my stuff, the actual sound quality coming through is great, except there's this super high pitched sound in the background, almost like a dog whistle. I didn't even notice it at first, but when I crank the volume up, it's very noticeable. To make things even more complicated, the sound gets worse when I turn the tone pot on my bass to the treble side. At first I thought it was my bass, but it does it with my guitar, too. I've tested recording at different places in my house, and it's still the same thing, so I don't think it's interference coming from other electronics. I even tried unplugging my power supply from my computer because I know that can cause issues, but it was to no avail. I'm starting think it could be a ground looping issue. I don't have much experience with this kind of stuff, though. I just want clean recordings! Has anyone run into this problem before?