MXR CSP233 User manual

92503020500REVA

M233 MICRO AMP

+

M233 MICRO AMP

+

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.

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)

1

2

GAIN

3

BASS

OUTPUT

4

TREBLE

micro amp +

INPUT

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.

• Star t with all controls at
12 o’clock.

• Turn the effect on by depressing
the footswitch.

• Rotate the GAIN knob clock wise
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.

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.

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

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

20 Hz to 20 kHz,

±0 .75 dB

DUNLOP MANUFACTURING, INC.

P.O. BOX 846 BEN ICIA , CA 94510 U.S .A.

TEL : [phone] FAX: [phone]