Marantz PM6004 Knob Feel Review - The Marantz has two knobs worthy of reviewing. Firstly the Input Selector has a nice notched spin, with a nice weight behind it. The Volume knob has less weight in my opinion, and also a slight input lag. This being my most commonly used knob, I’d have prefered these roles reversed for long term use. Overall a very average knob experience, but not one I’d shy away from using.