Boss MS-3 - Getting Ready: Rear Panel Specifics; CTL, MIDI, and Expression;Footswitch Ports

4
Getting Ready
Rear Panel (Connecting Your Equipment)
CTL OUT jack (CTL 1/2)
You can connect this jack to the control jack of your
external device.
It can be used to control things such as switching
channels of an amp, turning reverb on/o, or setting
tap tempo.
By using a TRS plug with this jack, you can separately
control two targets (TIP: CTL 1, RING: CTL 2).
* If 1/4” plug cable is connected, only CTL 1 is available.
To use these as EXP 1, 2 jacks
Connect an expression pedal (such as
the Roland EV-5).
To use these as CTL 1/2, 3/4 jacks
Connect a footswitch.
FS-5U x 2
RINGTIP
Stereo 1/4” phone type
.
/
1/4” phone type x 2
FS-6 FS-7
CTL 2
FS-5U x 1
FS-5U
FS-6
Mode/Polarity switch
FS-7
1/4” phone type
.
/
1/4” phone type
Stereo 1/4” phone type
.
/
Stereo 1/4” phone type
Stereo 1/4” phone type
.
/
Stereo 1/4” phone type
CTL 1
CTL 2 CTL 1CTL 1CTL 1 CTL 2
TIP RING
CTL 1 CTL 2
SEND
RETURN
CTL IN jacks
You can connect separately sold expression pedals or
footswitches to these jacks, and use the expression
pedals or footswitches to control a variety of functions.
CTL 3 CTL 4 CTL 3 CTL 4 CTL 3
CTL 4
CTL 3
Use only the specied expression pedal (FV-500H, FV-
500L, EV-30, and Roland EV-5; sold separately).
By connecting any other expression pedals, you risk
causing malfunction and/or damage to the unit.
MIDI OUT connector
You can connect this to a MIDI-compatible eect unit
and control it from the MS-3.
Clock out, program change, and control
change messages are supported.
For details, refer to the parameter guide
(PDF).
O (USB ) port
You can connect your computer via this port, and
use your computer to edit and manage patches
(p. 17).
Pin assignment of CTL OUT
and CTL IN jacks