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Dave Smith Instruments Mopho x4

Analog Synthesizer

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Dave Smith Instruments Mopho x4
Dave Smith Instruments Mopho x4
1 000.00 street price

A 44-note semi-weighted keyboard with aftertouch offers a 100% analog signal path, 4 voices of polyphony, a wide range of modulation possibilities featuring 20 sources and about 50 destinations, easy and quick sound programing. There are two analog oscillators and two sub-octave generators, four LFOs, three 5-stage envelope generators, a low-pass filter per voice. The instrument comprises a 16x4 step sequencer and arpeggiator. You’ll like the versatility of the dense analog sound with powerful leads, heavy basses and lustrous pads.

The instrument is expandable so you can have a bigger polyphony if you require more voices – Poly Chain feature allows connection to DSI’s Mopho, Tetra and Prophet ‘08. It’s a smart compact but mightly keyboard which is both playable owing to the uniquely-numbered 44 velocity and pressure sensitive keys and applicable anywhere due to an impressive set of knobs.

Dave Smith is a legend among analog synth manufacturers that’s why Mopho x4 is based on the exquisite analog component technology. Each of the four voices has 2 VCOs, 2 sub-octave generators, a famous 2-/4-pole Curtis low-pass filter, 4 LFOs, three 5-stage envelope generators, an arpeggiator and a 16x4 step sequencer.

Country of origin / production: USA

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More info
Usage area
Usage Design/ Form Factor
With Keys 
Analogue (A) 
Polychain16 voices
Tone Generator / Sound Synthesis
Oscillator Type DCO (Digitally Controlled Oscillator)
Oscillators' hard sync 
Oscillators per voice2
Sub-Oscillators per voice2
VCA per voice1
Waveform/ Spectral form (main generator) Pulse Width Modulation (PWM)
Waveform/ Spectral form (main generator) Triangle
Waveform/ Spectral form (main generator) Saw/ Triangle
Waveform/ Spectral form (main generator) Saw
Waveform/ Spectral form (main generator) White Noise
Waveform/ Spectral form (main generator): Waveform Count12
Programs/ Voices/ Timbres
Single Voice Preset512
User-defined Single Voice512
Voltage Controlled Filter (VCF) 
Low-pass Filter (LPF) 
Envelope Generator (EG)
Modulation Matrix4x2
Source count20
Destination count43
Tracks count4
Max Step Count16
Arpegiator/ Portamento
General MIDI (GM) 
MIDI in/ out
Poly Chain 
Type Synth Action
Velocity Sensitivity 
Number of Keys44
Color resolution Monochrome
Built-in controllers
Pitch Bend Wheel 
Modulation Wheel 
External controllers
Sustain foot pedal 
Expression foot pedal 
Audio out
Analogue: 1/4" (6.35mm)2
Analogue: 1/4" (6.35mm) headphones preamplified1
Audio in
Analog 1/4"1
Computer Interfaces
USB MIDI through USB
Voltage 100-230(250)V
Voltage 50-60Hz
Power Supply Built-in, internal
Power consumption18 W
Height91 mm
Width640 mm
Depth282 mm
Height3.6 in
Width25.2 in
Depth11.1 in
Weight13.5 lb
Weight6 kg
Case/ body
Production start2012
Production end2018
Production ended

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  • enpdf3.3Mb DSI Mopho X4 Operation Manual v1.0
  • enpdf0.05Mb DSI Mopho X4 Program Names
  • enpdf0.19Mb DSI Synth Comparison Chart 3.0
  • enpdf0.18Mb DSI Synth Comparison Chart 4.6