Fosi Audio Replaceable Orange & Grey Knob

The BT20A, BT20A PRO, BT30D, BT30D PRO, and TB10D amplifiers are equipped with replaceable orange and grey knobs. Customization of the amplifier's appearance, making it easier for users to tailor their setup to their individual preferences. To replace the knobs, just need a cloth with friction, simply grasp the existing knob firmly and pull it straight off the shaft. Then, align the new knob onto the shaft and press it firmly in place. Make sure that the new knob is securely attached before use.