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14
Names of Things and What They Do
Rear Panel
INPUT Jacks
(INPUT A (MONO), INPUT B)
These input jacks are used for
connecting electric guitars, keyboards,
other instruments, and effects
processors.
Connect mono instruments or effects to
the A (MONO) jack.
“Making the Connections” (p. 4)
* The A (MONO) jack also doubles as the
power switch when the unit is running on
battery power. The power comes on when
a plug is inserted into the A (MONO)
jack, and goes off when it is unplugged.
Unplug any connected cords when the
unit is not in use.
Headphone Jack (PHONES)
You can listen through headphones by
connecting the headphones here.
* Plug in the headphones only after turning
on the power. When turning the power
off, unplug the headphones first, and then
turn off the power.
SPEED (EXP PEDAL) Jack
Connect an optional expression pedal
(such as the Roland EV-5) to this jack.
You can use the connected pedal to
control the rotor’s rotation speed in
real time.
“Controlling the RT-20 with an
Expression Pedal” (p. 10)
AC Adaptor Jack
(DC IN)
This jack is for connecting an
AC adaptor (BOSS PSA-series,
sold separately).
Using an AC adaptor makes
possible long performances
with no worry about batteries
going dead.
DRIVE TYPE Switch
This sets the overdrive gain to levels
appropriate for guitars or for
keyboards.
Set the switch according to the type
of instrument you are connecting.
OUTPUT Jacks
(OUTPUT A (MONO), OUTPUT B)
Use these jacks to connect to a guitar amp or
keyboard amp or to an effects processor, mixer,
multitrack recorder, or other such device.
Connect to the A (MONO) jack when
outputting in mono.
“Making the Connections” (p. 4)