Owner`s manual
DUAL FUNCTION CONTROLS: 
IN PLAY MODE: 
BANK  Enter a bank number (0 to 12) by using the up or down arrows. After 
bank selection, you must select the "ones" digit using the buttons 
labeled (0 to 9) to exit bank select mode. 
0 THRU 9    Selects the "ones" digit of the program number. 
MIDI CHNL  Selects the MIDI channel edit mode. Use up or down arrows to select 
MIDI channel 1 to 16, ALL (OMNI) or OFF. 
PRGM    Selects the external 
MIDI program number to be mapped. 
MEM    Selects the internal 
program number for mapping. 
IN EDIT MODE: 
VOICING  Allows choice of Clean Tube, Distortion Tube, or Solid State circuits. 
Use arrow buttons for selection. 
OVERDRIVE 1  Attenuates pre tube input signal. Higher gain levels of OVERDRIVE 1 
result in higher frequency harmonic saturation. 
OVERDRIVE 2  Attenuates inter tube signal. Higher levels of OVERDRIVE 2 result in 
fuller harmonic saturation. In Solid State mode, OVERDRIVE 2 adjusts 
the level of compression. 
MASTER GAIN  Post-tube, pre-EQ gain. 
BASS    Narrow band EQ adjustable in 2 dB steps 
±18 dB centered @ 180 Hz. 
MID    Wide band EQ adjustable in 2 dB steps 
±12 dB centered @ 600 Hz. 
TREBLE  Narrow band EQ adjustable in 2 dB steps 
±18 dB centered @ 1.6 kHz. 
PRESENCE  Wide band EQ adjustable in 2 dB steps 
±12 dB centered @ 3 kHz. 
CHORUS DEPTH  Adjusts sweep depth from 0 to 100%. When Chorus Rate is set at 0, 
Depth control will vary the notch filter point. 
CHORUS RATE  Adjusts sweep speed from .1 Hz. to 10 Hz. or off (0). 
EDIT  Places the MP-1 into Edit mode. The display reads "Edit" until a 
parameter is selected. Display then shows the value of the selected 
parameter. Use the up and down arrows to set the value of the 
selected parameter. 
STORE  Places the MP-1 into Store mode. Stores any current or edited 
program to any internal program number. Press STORE button 
followed by a program number. LED indicates Store mode is engaged. 
LED turns off when storage is complete If you decide not to store the 
current program, but you've already pressed the STORE button, you 
can exit the Store mode by pressing STORE again. 
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