Boss TU-03 Owner’s Manual
TU-03 Operation Guide
Panel Descriptions
Long-press the [J] button to turn the power on/off.
1
2
3
Long-press the [MODE] button to switch between Tuner mode and
Metronome mode.
Tuner Mode Metronome Mode
[J] button
Turn the A4 (reference pitch)
1
sound on/off.
Long-press the [J] button to turn the power on/off.
[MODE] button
Switches the tuner mode.
Mode Explanation
C
G
2
B
U
V
Long-press the [MODE] button to switch between Tuner
mode and Metronome mode.
Specifies a flat tuning
setting (only if the tuner
3
mode is guitar or bass).
“
and “ ” is a whole tone
down.
4
Change the reference pitch
(430–450 Hz).
Chromatic
Guitar
Base (6 strings)
Ukulele (C)
Violin
” is one semitone down,
[H] [I] buttons
Starts/stops the metronome.
Changes the time signature
(0–9).
[
/ ] button
Switches the rhythm
pattern.
Long-press the [ / ]
button to change the
volume.
Change the tempo
(30–250 BPM).
Display
4
5
Tuner Mode Metronome Mode
Tuning meter
D
-50–0–+50 cent
Note (string number is
also shown for string
E
instruments)
Reference pitch sound ON/
F
OFF
Reference pitch
G
430–450 Hz
Accuracy indicator
Beat
0–9
Volume
0–3
Tempo
30–250 BPM
Changing the Battery
When the battery is nearly worn out, the unit’s display becomes dim.
Replace the battery as soon as possible.
CR2032
1. Turn the rear panel battery cover counter-
clockwise, and remove it.
2. Install a new battery (CR2032).
Insert the battery so that the “+” indication is visible.
3. Replace the battery cover.
MEMO
If no button is pressed for approximately 5 minutes after the
power is turned on, the power will automatically turn off.
A
5
B
C
D
Tuner mode
C (C–B)
G (6E, 5A, 4D, 3G, 2B, 1E)
A
B (LB, 4E, 3A, 2D, 1G, HC)
U (4G, 3C, 2E, 1A)
V (4G, 3D, 2A, 1E)
no display Rhythm
B
Flat tuning indication no display
C
no display
E
F
G
Copyright © 2018 ROLAND CORPORATION
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