MXR M133 User Manual
M-133
MICRO AMP
DESCRIPTION
• Add preset gain, using a single “stay-put” knob control
• Perfect for switching between guitars with unmatched output
• Use in long signal chains, or anytime signal dropoff is a problem!
DIRECTIONS
To set up the M-133, plug your instrument into the Input jack and your amplier into the Output
jack. Turn on the effect with the footswitch toggle, making sure the red LED is ON to indicate
that the effect is active.
Next, adjust the Gain knob while toggling the footswitch on and off, comparing the volume of
the unmodied (light off) signal with the modied (light on) signal. Match the gain level as
closely as you can to the unmodied signal. This is your reference point: if you plan to make
adjustments during your performance, it might be useful to mark this position with a piece of
masking tape and a marking pen. (Write on the tape, not the stomp box!)
Then adjust the Gain knob to the desired amount of added gain or cut that the situation
calls for. (If you’ll need to nd this position again during performance, make another mark
on your tape.)
A common use of the M-133 is to leave it turned off until it’s time to solo, then kick it in for a
quick level boost during the solo. You can easily apply it to ANY situation where two different,
quickly accessible playing volumes are appropriate.
POWER
Single 9 volt alkaline battery or Dunlop ECB03 AC Adapter
CONTROLS
• Footswitch toggles amp on/bypass (red LED indicates on)
• Gain knob adjusts total output volume when micro amp is engaged
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