Pioneer DJ DJM-300 Fader Maintenance The internal parts of the vertical and horizontal faders have been cleaned in detail. The faders move very smoothly. Internal cleaning, panel removal, sponge washing, and cleaning of the base of the knobs were performed. All knobs have no scratchiness or noise, and their movement has a moderate torque and is smooth. Headphone and microphone operation are good. All functions are in good working order on this DJM-300. #AlphaTheta #DJMixer #pioneerdj #BrimainAmp #AnalogMixer