It would be really beneficial if there was a knob for controlling the level. It's a little frustrating that the Windows lock button is in the corner; I accidentally touched it several times when I meant to press the minus sign. A nearly flawless keyboard in every other respect. When more than three buttons are pressed at the same time, clamping will not take place. However, it is not a mechanical device. The price tag is arbitrary, and I make no judgments about it. I have no choice but to affirm that the quality is quite high.