Connect this to any computer audio system, multitrack
recorder, digital mixer, effects processor, or other
digital audio device which supports the ADAT optical
MIDI lets you connect OASYS to computers or other
MIDI devices, for sending and receiving notes,
controller gestures, sound settings, and so on. For
more information on MIDI connections, please see
"MIDI applications" on page 1055 of the Parameter
MIDI THRU connector
MIDI data received at the MIDI IN connector is re‐
transmitted without change from the MIDI THRU
You can use this to chain multiple MIDI devices
MIDI OUT connector
This connector transmits MIDI data. Use this to control
external MIDI devices, or to record into an external
MIDI IN connector
This connector receives MIDI data. Use this to play the
OASYS from another MIDI device, or from an external
For the damper–also known as the sustain pedal– you
can connect either a standard footswitch, or Korg's
special half‐damper pedal, the optional DS‐1H.
The DS‐1H is a continuous pedal designed specifically
for piano‐style damper control, with the look and feel
of an acoustic piano's sustain pedal. It allows more
subtle control of the damper than a simple switch; the
further down you press the pedal, the more that the
sound sustains. For more information, see "Half‐
Damper Pedal and Release Time" on page 37 of the
You can also connect a simple footswitch, which will
work as a standard on/off damper pedal.
In order to ensure that the pedal functions correctly,
please adjust the switch polarity (see "Damper
Polarity" on page 717 of the Parameter Guide) and the
half‐damper sensitivity (see "Half Damper
Calibration" on page 741 of the Parameter Guide).
Front and rear panels
ASSIGNABLE SWITCH jack
This lets you connect a simple on/off footswitch, such
as the optional Korg PS‐1. The footswitch can perform
a wide variety of functions, such as modulating sounds
and effects, tap tempo, sequencer start/stop, etc.
The switch's function is set in Global mode (on the
Controller tab of the Controllers/Scales page), so that it
always works the same regardless of the current
Program, Combi, or Song. For more information,
please see "Specifying the function of the
ASSIGNABLE Switch and ASSIGNABLE Pedal" on
ASSIGNABLE PEDAL jack
This lets you connect a continuous controller pedal,
such as the Korg EXP‐2 foot controller or Korg XVP‐10
EXP/VOL pedal, to use as an assignable modulation
Like the ASSIGNABLE SWITCH, the pedal's function
is set in Global mode. For more information, please see
"Specifying the function of the ASSIGNABLE Switch
and ASSIGNABLE Pedal" on page 153.
4. USB 2.0 ports
There are four external, high‐speed USB 2.0 ports. You
can use these to connect storage media such as hard
disks, flash media, etc. For more information, see "6.
Connecting USB devices" on page 43.
5. POWER switch
This switch turns the power on and off. Before turning
OASYS off, make sure that you've saved any edits to
your Programs, Combis, Songs, or other user data.
After turning the power off, please wait for at least
ten seconds before you turn the power on again.
6. S/P DIF IN & OUT
These jacks provide 24‐bit optical S/P DIF input and
output, for connecting to computer audio systems,
digital mixers, DATs, MDs, etc.
Optical S/P DIF is sometimes called TOSLINK, and
formally named (hold your breath!) IEC60958, EIAJ
CP‐1201. Make sure to use optical cables designed for
Whenever you use digital audio connections, make
sure that all connected systems are set so that there is
one and only one word clock master. You can set the
word clock for the OASYS using the Global page
System Clock parameter. For more information, see
"System Clock" on page 702 of the Parameter Guide.
This optical S/P DIF output carries a digital version of
the main L/R outputs.