Is anyone else experiencing this. My gain staging is perfect. It is there with or without usb. It only appears when the vca is opened, aka i press a key with an oscillator turned up. Its too loud to be out of the way. Have tried balanced, unbalaced, isolated power, shared power, different inputs. Its happening in the pro 3. I have entered a support ticket but dont expect to hear back till monday. Wondering if anyone has encountered this as im hoping the record the synth without having to use a notch filter dead centre the high mids....