MIDI Channel Auto Recognition
This is how it works:
1. The Clean channel must be engaged.
2. Press and hold the Noise Gate push button for about 2 seconds 
   until the Noise Gate LED starts flashing fast.
3. Now send a PC (program change) or CC (control change) command on 
   the desired MIDI channel (e.g. PC #1 on MIDI channel 1) to the amp.
4. When receiving data, it gets confirmed by the store LED flashing 3 
   times short.
5. Now the amp is only listening to the MIDI channel (e.g. channel 1) 
   that was formerly sent to the amp.

MIDI channel OMNI mode
This is how it works:
1. The Clean channel must be engaged.
2. Press and hold the Noise Gate push button for about 2 seconds 
   until the Noise Gate LED starts flashing fast.
3. Press and hold the store button for 2 seconds while the Noise Gate 
   LED is flashing fast.
4. It gets confirmed by the store button LED flashing once long.
5. Now the amp is receiving data from all channels.