Yes it is. Im guessing it has some sort of volume control? If it does, simply use that as you normally would, just be careful not to put the str-de497 up with the sub (volume). If it does not have a volume control, which is highly unlikly, you could get a potentiometer to be safe, or use with caution. Best chances are to hook it up on the B channel, and the others to the A. Im not to sure about the sony str-de497, so use this at your own risk.