The default for receiving MIDI messages via the MIDI In is channel 1. 
The MIDI channel can be changed using Blackstar’s Architect software.
				
CC Values
Type        Function                 CC#  Value
Preamp      Volume                   2    0-127
            ISF                      3    0-127
            Bass                     4    0-127
            Middle                   5    0-127
            Treble                   6    0-127
            Gain                     7    0-127

Response    EL84                     8    127 = On
            EL34                     10   127 = On
            6L6                      12   127 = On
            Presence                 15   127 = On

            Master Volume            16   0-127

Clean       Clean Patch              25   127 = On
            Warm Voice               26   127 = On
            Bright Voice             27   127 = On

Crunch      Crunch Patch             38   127 = On
            Crunch Voice             39   127 = On
            Super Crunch Voice       40   127 = On

Overdrive   Overdrive Patch          51   127 = On
            OD1 Voice                52   127 = On
            OD2 Voice                53   127 = On

Boost       Boost Footswitch         59   0 = Off, 127 = On
            Boost Post               60   127 = On
            Boost Pre                61   127 = On
            Boost Level              64   0-127

FX Loop     FX Loop Pre              75   127 = On
            FX Loop Post             76   127 = On
            FX Loop Series           77   127 = On
            FX Loop Parallel         78   127 = On

Reverb      Reverb Footswitch        86   0 = Off, 127 = On
            Reverb Bright            87   127 = On
            Reverb Dark              88   127 = On
            Reverb Level             91   0-127
            Reverb Hold              92   0 = Off, 127 = On

Power Level 1W                       110  127 = On
            20W                      111  127 = On
            100W                     112  127 = On