Spark Control Surface hardware version 1.1.2
Spark MIDI Control Center.app version 1.0
Spark.app v1.5 (OSX)
Spark Control Surface reports Midi Channels "0-15" when Spark MIDI Control Center allows selection of appropriate channels "1-16". Testing reveals Controller is simply displaying the wrong channel (0-15 instead of 1-16), while sending the correct channel, as is selected in Spark MIDI Control Center.app.