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MPX R1 Preliminary Specifications
Dimensions: 23 in x 8 in x 3 in (WHD)
(58.42 cm x 20.32 cm x 7.62 cm)
Weight: 9.5 lbs (4.3 kg)
Construction: all metal chassis, switches and expression
External control inputs: 1/4” TRS jack supports up to 3 on/off
1/4” TRS jack for external expression
Internal relays: 1/4” TRS jack connected to two internal
MIDI: MIDI OUT/REMOTE: 7-pin DIN connector
(compatible with standard 5-pin MIDI) provides phantom power and two-way MIDI
communication with the MPX 1.
MIDI IN: standard MIDI IN can also be
used to merge a second MIDI input stream
when MIDI OUT/REMOTE is connected.
MIDI THRU: can be set to pass MIDI from
either MIDI IN or REMOTE ports.
Power: 9 VAC,1A wall transformer; 25’ 7-pin DIN
cable for phantom power via MPX 1 (provided)
Expression pedal: Vintage mechanical design, all steel construction, programmable toe switch
Display: 3-digit LED indicates program number
and tempo rate
MIDI functions: MIDI bank and program select for up to
Switches and pedal(s) can be individually
set to transmit any controller on any channel.
The status of each MIDI switch is indicated
with a green LED
Tap tempo can be transmitted as MIDI
Relay mapping: When connected to an MPX 1 via 7-pin DIN
cable, LEDs automatically display the following each time a new program is loaded:
Master Bypass state
State of each effect block (Pitch, Chorus,
EQ, Mod, Delay, Reverb); effect on=green,
effect bypassed=red, effect not active=off)
The state of any active effect can be
instantly changed by pressing its associated
Dedicated switches for control of A/B and
All specifications are subject to change without notice.