Arturia MatrixBrute User Manual page 10

10. Expression 1, 2; Sustain - Pedal inputs. Expression 1 and 2 are for
continuously variable expression pedals (sometimes called volume pedals),
Sustain is for a momentary on/off pedal (i.e. a sustain pedal). Some
manufacturers reverse the polarity of their pedals; download the MIDI Control
Center software from www.arturia.com to correct the polarity of any of them.
These pedals are converted to MIDI, so they appear in the MIDI Out datastream.
Expression pedal wiring is Tip = pot center tap; Ring = 3.3V; Sleeve = Gnd
11. Memory Protection On/Off - When off, prevents the MatrixBrute's patch Preset
and sequencer Pattern memories from being overwritten.
12. MIDI In/Out/Thru - Standard 5-pin DIN jacks. Connect to MIDI interfaces and
other equipment.
13. USB - USB B jack for connecting MatrixBrute to a Mac or PC (which normally
have USB A connections; the cable is often called a "printer cable.") This lets you
use Arturia's MIDI Control Center software (available from www.arturia.com),
and it also sends/receives MIDI - no additional MIDI interface is required.
14. Power switch - Turn the instrument on and off.
15. AC jack 100-240Vac, 50-60Hz, 45W
4 Arturia - MatrixBrute Manual - Connections