M233 MICRO AMP
+
92503020500REVA
M233 MICRO AMP
+
DUNLOP MANUFACTURING, INC.
P.O. BOX 846 BENICIA, CA 94510 U.S.A.
TEL: 1-707-745 -2722 FA X: 1-707-745-2 658
CONTROLS
1 TREBLE knob cuts or boosts
high frequencies
2 GAIN knob controls overall
amount of signal boost
3 BASS knob cuts or boosts
low frequencies
4 FOOTSWITCH toggles effect
on/bypass (red LED
indicates on)
DIRECTIONS
• Run a cable from your guitar
to the M233’s INPUT jack and
run another cable from the
M233’s OUTPUT jack to
your amplifier.
• Start with all controls at
12 o’clock.
• Turn the effect on by depressing
the footswitch.
• Rotate the GAIN knob clockwise
to increase amount of signal
boost or counterclockwise to
decrease it.
• Rotate the BASS knob clockwise
to boost low frequencies or
counterclockwise to cut them.
• Rotate the TREBLE knob
clockwise to boost high
frequencies or counterclockwise
to cut them.
BASS
GAIN
OUTPUT
INPUT
TREBLE
micro amp +
1
3
2
4
The Micro Amp + builds on the classic M233 with
EQ controls so you can finely sculpt your boosted
signal. You can dial up just as much gain as the
original—up to +26dB—and for the classic Micro
Amp sound, just set the Bass and Treble controls
to noon. This pedal has also been upgraded
with low-noise op amps—so you don’t get
any extra noise at super high levels—and
true bypass switching.
SPECIFICATIONS
Input Impedance 1 MΩ
Output Impedance 470 Ω
Max Output Level +7 dBV
Noise Floor* -87 dBV
Tone Controls
BASS ±14 dB, 33 Hz
TREBLE ±11 dB, 8.4 kHz
Gain Control +0.5 dB to +26 dB
Frequency
Response
20 Hz to 20 kHz,
±0.75 dB
Bypass True Hardwire
Current Draw 6.5 mA
Power Supply 9 Volts DC
*A-weighted, Gain at maximum clockwise position,
Bass and Treble at mid position
POWER
The MXR Micro Amp + is
powered by one 9-volt battery
(remove bottom plate to install),
a 9-volt AC adapter such as the
Dunlop ECB003, or the DC Brick
™
and Iso-Brick
™
power supplies.
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