UGh. Reminds me of the terrible USB powered speaker bar for an HP LCD I have at work. The audio comes from the 3.5 mm jack and power from USB. All you hear is t

UGh. Reminds me of the terrible USB powered speaker bar for an HP LCD I have at work. The audio comes from the 3.5 mm jack and power from USB. All you hear is the damn switching noise from the motherboard. Any time there is significant CPU use you get this noise in the background and it's quite audible at even moderate volumes. Not sure if it's the crap speaker bar; power and audio coming from the same chassis using two different cables or the motherboard. Could be a ground loop? Now That I think of it, I'll try to power the USB from a lab supply or beefy USB charger.