Well what can I say about a knob? I am quite happy that the case it metal and it seems sturdy enough for my likings. (I hate flimsy plastic cases). However, it could be slightly heavier, as the cables and plugs going in it are heavier if you are using Neutrik stuff, so I had to tape it down to my table to avoid it falling down. The Mute button leaks a bit of sound, and so does the knob as well. It crackles after 3 years of use as well, when touched.