While in the process of recording I continue to hear my voice echo through my headphones. I know this echo can be alleviated by adjusting my mixer knob but the problem is when I make the adjustment my recording is so low that I need to turn the mixer up just to hear my recording at a decent volume when I play it back, however in order for me to record my voice at a moderate level I hear a echo. My recording area is soundproofed very well with a microphone isolation panel along with foam mattress padding on the walls, and my recording area is closed in. I don't hear any echo when I playback my recording. Any suggestions as to how I should set my vocals??? Are there any limitations using audiobox usb in comparison to the other midi interfaces???