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

pedal

External control inputs: 1/4” TRS jack supports up to 3 on/off

switches

1/4” TRS jack for external expression

pedal

Internal relays: 1/4” TRS jack connected to two internal

programmable relays

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

300 programs.

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

Clock

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:

Program number

Master Bypass state

A/B state

Tempo rate

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

switch.

Dedicated switches for control of A/B and

Tap functions.

All specifications are subject to change without notice.