Right, and that is the point of the jumpers. They are separate components when disconnected. The MULTI IN\/EXT. IN 7.1 ports are a source input port and while digital processing is bypassed, volume control is on like on any other source input. They were meant for connection to a source device, not an external AVP\/AVR for power like the IN port when jumpers are removed from the IN and OUT ports on some receivers. It can be done, it just was never the real point of them.