Panel Descriptions
6

Security slot

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Adjusting the input level

Adjust each [INPUT LEVEL] knob so that the PEAK indicator lights
only occasionally, when the level of the input is at its highest.

DC IN jack

Connect the included AC
adaptor here.
* Use only the included
AC adaptor. Using any
other adaptor may
cause overheating and
malfunction.

INPUT MIC jack

Connect your microphone here.

MAIN OUTPUT jacks

Connect these jacks to your amp or monitor
speakers.
If your system is monaural, use only the OUTPUT
L jack. Sound that was input in stereo will also be
output monaurally.

SUB OUTPUT jacks

Connect these jacks to your mixer or other equip-
ment. The sound of a specic track, the audio
input, or sound from a computer connected via
USB can be output from the SUB OUTPUT jacks
independently of the MAIN OUTPUT jacks (p. 33).
Rear Panel Connections

PHONES jack

Connect
a set of
headphones
(sold
separately)
here.

CTL 1, 2/EXP 2 jack

CTL 3, 4/EXP 3 jack

You can connect EXP pedals
(EV-5, etc. ; sold separately) or
foot switches (FS-5U, FS-6; sold
separately) here, and use them
to control a variety of parameters
(p. 24).

MIDI

connectors

For connecting
MIDI device (p. 38).
You can also
connect an
additional
RC-300 unit for
synchronized
playback.

[POWER] switch

This turns the power on/o (p. 7).

INPUT INST jacks

Connect your guitar, bass,
or eects unit to these
jacks.
Use the INPUT L jack
and INPUT R jack when
connecting a stereo-
output eects unit. Use
only the INPUT L jack if
you’re using a monaural
source.

INPUT AUX jack

Use a stereo mini-plug cable to
connect your audio player here.
To prevent the
inadvertent
disruption of
power to your
unit (should the
plug be pulled out
accidentally), and
to avoid applying
undue stress to
the DC IN jack,
anchor the power
cord using the
cord hook, as
shown in the
illustration.
[PHANTOM]
switch setting
If you’re using
a condenser
microphone, choose
the “ON” setting. If
you’re using a dynamic
microphone, choose
the “OFF” setting.
* Ordinarily, this is set
to “OFF.”

USB connector

You can use a
commercially available
USB cable to connect
the RC-300 to your
computer, and use the
computer to read/write
RC-300 tracks (WAV les).
You can play sounds
from your computer through the RC-300 via USB
audio (p. 36).
About USB cap
If you want to connect a USB cable, detach the
USB cap that covers the USB connector. Leave the
USB cap in place when you’re not using the USB
connector.