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Dave Smith Instruments Mopho x4 Analog Synthesizer


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MSRP: $1,100.00 $999.00 Save : $101.00 (9%)
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The Dave Smith Instruments Mopho x4 builds upon the same award winning voice architecture of the Mopho and Mopho Keyboard.

It’s a Polyphonic Mopho Keyboard!
The Mopho x4 boasts huge sound and 4 voice polyphony in an ideally sized, portable, and elegantly designed package. Use it to create huge unison basses, creamy leads, percolating sequences, and ethereal pads.

4 Times the Voice 4 Your Pleasure
Each of Mopho x4′s four voices is composed of two analog oscillators, two sub octave generators, selectable 2- or 4-pole famed Curtis low-pass filter, three 5-stage envelope generators, four LFOs, a re-latchable arpeggiator, and a 16 x 4 step sequencer. Its voice also comes packed with 20 modulation sources and almost 50 destinations!

FM the filter to create metallic bell-like sounds and use the feedback path to add subtle or destructive harmonic content to your sound. Mopho x4′s 100% analog signal path is powerful, monstrous, and sonically dynamic!

Work Less, Play More
Mopho x4 is intuitive and inviting. Every parameter is fully programmable and editable from the front panel. The controls are logically laid out, lending themselves to quick access so you can tweak knobs without missing a beat.

The x4′s full sized 44-note semi-weighted keyboard has aftertouch and velocity sensitivity. The sturdy full sized pitch and mod wheels are freely assignable and sport smooth reliable action.

It Grows with You
Expand Mopho x4′s polyphony using it’s Poly Chain port. Mopho, Tetra, and Prophet ’08 can all be connected to the x4 to increase its voice count. You can Poly Chain up to three Tetras with Mopho x4 to create a 16 voice analog super synth!

The Mopho x4!
Dave Smith Instruments is the only company pioneering and producing fully programmable polyphonic analog synthesizers. In fact Dave’s been at it for 35 years!

Designed and manufactured in San Francisco, Mopho x4 has the high quality sound and build for which DSI is renowned. From its feature packed analog voices and unmatched sonic versatility to its refined design and engaging interface, you won’t find a polyphonic analog synthesizer like this anywhere else.

  • 100% analog signal path
  • Two oscillators per voice capable of producing sawtooth, triangle, saw/triangle, and variable pulse width square waves, with hard sync
  • Two sub-octave generators per voice (one octave below oscillator 1 and two octaves below oscillator 2)
  • One classic Curtis low-pass filter per voice (switchable 2- or 4-pole) with audio rate modulation, self-oscillating in 4-pole mode
  • Analog VCAs
  • Three envelope generators per voice (ADSR plus delay)
  • Glide (portamento): separate rates per oscillator

Get your Dave Smith Instruments Mopho x4 Analog Synthesizer today at the guaranteed lowest price from Sam Ash Direct with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Mopho x4 Analog Synthesizer
  • Power Supply
  • Free software editor for Mac OS and Windows (via download)


by PowerReviews
Preset Types 1,024: 128 read-only factory programs and four banks of 128 user programs
Series mopho
Polyphony 4 Voice
Model x4
Number of Keys 44
Weight 13.5 lbs.
Arpeggiator Yes
Sampling No
MIDI Sequencer Yes
Dimensions 25.2″ L x 11.1″ W x 3.6″ H
Synthesizer Format Keyboard Synthesizer
Type of Action Semi-Weighted
Effects Type N/A
Audio Inputs N/A
Audio Input Types 1/"4 Unbalanced
Audio Output Types Left and Right audio outputs: 1/4″ phone jack (unbalanced); Headphone output: 1/4″ TRS stereo phone jack
CV Jacks (Control Voltage) Yes
Digital Input Type USB
Digital Output Type USB
Audio Outputs 2
Controller Types Pitch bend, Mod Wheel, Sustain, CV
Information not available