No I mean physically like a knob on the amp.Are you referring to the setting in the touch screen menu to adjust the subwoofer volume? If so then yes, that is possible. When on the audio screen, hit the menu button on left side of screen and then the sound settings tab at the bottom of the screen that pops up, then the middle tab on the next screen has an option to adjust the subwoofer level. If that is not what you were referring to and looking for then I apologize.
Oh ok gotcha, sorry bout that. I don't know of any knob or anything that may be able to adjust the volume like that. But do let us know if you find out such a thing exists.No I mean physically like a knob on the amp.