The DMXOPERATOR PROFILE is a compact yet versatile DMX controller. Compared to standard DMX controllers (like the DMXOPERATOR 192), this model emphasizes simpler and more intuitive operation. Control Channels: 128 channels total. Fixture Buttons: Up to 8. 1 button (scanner button) can be assigned to 16 channels. Program Functions: Up to 96 scenes can be saved. 6 chases (programs that play scenes in sequence) can be created. Sound Synchronization: The built-in microphone allows the lights to change in response to sound. There are almost no scratches, and I have confirmed that all functions are working. Thank you.