18. Why is the volume knob of the K9 Pro ESS a little bit skew?

The knob is designed with a potentiometer pole + aluminum alloy knob. The volume is controlled by rotating the large knob to drive the potentiometer.

Between the potentiometer pole and the aluminum alloy knob is a plastic component, which is convenient for installation and can help to solve the shaking issue. It is an unavoidable issue in the industry. The larger the volume knob, the more obvious the issue.

In the design, if it is skewed 1° off the original position, one side will shift about 0.39mm, 3° will cause about 1.18mm shift, and 5° about 1.97mm. Because the volume knob of the K9 Pro is large, a 2mm to 3mm shift for one side is normal.