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Dave Smith Mopho X4 Monophonic Synthesizer - Used  From Sequential

Get this feature rich DCO based analog synth for a steal! It's in fantastic shape and sounds huge!

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Sequential

"Gone, Baby, Gone"

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What We Think

Condition: Used, Excellent

Manufacturer's Description from Sequential

It’s a Polyphonic Mopho Keyboard!

The Mopho x4 builds upon the same award winning voice architecture of the Mopho and 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.

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.

Sequential

About Manufacturer

Sequential is helmed by legendary instrument designer and Grammy-winner Dave Smith, the original founder of Sequential Circuits in the mid-70s. Dave designed the Prophet-5, the world’s first fully-programmable polyphonic synth—and the first musical instrument with an embedded microprocessor.

Dave is generally known as the driving force behind the generation of the MIDI specification in 1981. It was Dave, in fact, who coined the acronym. In 1987 he was named a Fellow of the Audio Engineering Society (AES) for his continuing work in the area of music synthesis. After Sequential, Dave was President of DSD, Inc, an R&D division of Yamaha, where he worked on physical modeling synthesis and software synthesizer concepts. He then started the Korg R&D group in California, producing the Wavestation products and other technology.

He took over as President at Seer Systems and developed the first soft synth for Intel in 1994, followed by the first fully professional soft synth, Reality, released in 1997.

Realizing the limitations of software, Dave returned to hardware and started Dave Smith Instruments, which released the Evolver hybrid analog/digital synthesizer in 2002. Since then the Sequential product lineup has grown to include the Prophet X, Prophet Rev2, Prophet-6, OB-6, Pro 2, and Prophet 12 synthesizers, as well as the Tempest drum machine, co-designed with friend and fellow electronic instrument designer Roger Linn.

 

Dave is generally known as the driving force behind the generation of the MIDI specification in 1981. It was Dave, in fact, who coined the acronym. In 1987 he was named a Fellow of the Audio Engineering Society (AES) for his continuing work in the area of music synthesis. After Sequential, Dave was President of DSD, Inc, an R&D division of Yamaha, where he worked on physical modeling synthesis and software synthesizer concepts. He then started the Korg R&D group in California, producing the Wavestation products and other technology.

He took over as President at Seer Systems and developed the first soft synth for Intel in 1994, followed by the first fully professional soft synth, Reality, released in 1997.

Realizing the limitations of software, Dave returned to hardware and started Dave Smith Instruments which released the Evolver hybrid analog/digital synthesizer in 2002. Since then the DSI product lineup has grown to include the Prophet 12, Prophet ’08, Pro 2, Mopho, and Tetra synths, as well as the Tempest drum machine, co-designed with friend and fellow electronic instrument designer Roger Linn.

Specifications

Mopho x4 Specifications
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)
Feedback loop per voice with programmable level and gain
White noise generator
4 LFOs per voice
Gated 16 x 4 step sequencer per voice (one sequence per program)
Arpeggiator
Glide (portamento): separate rates per oscillator
Full-sized, 44-note (F to C), semi-weighted keyboard action with velocity and aftertouch
Full-sized modulation wheel and spring-loaded pitch wheel
Fully programmable with four banks of 128 read-only factory programs and four banks of 128 user programs (1,024 total)
IN/OUT
USB type B receptacle
MIDI In, Out/Thru, and Poly Chain
Left and Right audio outputs: 1/4″ phone jack (unbalanced)
Sustain pedal input (accepts normally on or off momentary footswitch with 1/4″ phone plug)
Expression pedal/control voltage (3.3 VDC max.) input (1/4″ TRS phone jack)
Headphone output: 1/4″ TRS stereo phone jack
 
PHYSICAL SPECS
Dimensions: approximately 25.2″ L x 11.1″ W x 3.6″ H (64 cm x 28.2 cm x 9.1 cm)
Weight: 13.5 Lbs
 
INCLUDED
Power supply for 100V – 240V AC operation
Operation manual
Free software editor for Mac OS and Windows available from SoundTower