Pioneer DJ DJM-300 Silver Fader Maintenance The internal parts of the vertical and horizontal faders have been cleaned. The faders move very smoothly. Internal cleaning, panel removal, sponge washing, and cleaning of the knob bases were performed. All knobs are free of scratchiness or noise and have a moderate amount of torque, resulting in smooth operation. Headphone and microphone operation are good. All functions are working well on this DJM-300. We have focused on genuine parts and finished the fader maintenance instead of replacing them with new generic parts. The ALPS horizontal faders and ALPS vertical faders move very lightly and smoothly. #AlphaTheta #DJMixer #pioneerdj #BrimainAmp #AnalogMixer