DSI - Prophet 12 Keyboard

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The DSI - Prophet 12 is an epiphany!

The Prophet 12 is the next step for Dave Smith's revered line of Prophet synthesizers. Each of the Prophet's twelve voices is composed of a brand new hybrid digital/analog architecture that sounds different than any other DSI synth, yet retains the true Prophet vibe. With a humongous twelve voice polyphony, streamlined design, and sophisticated architecture, the Prophet 12 is ready to handle any sound you can dream up!

The Prophet sings

The Prophet 12's brand new hybrid voice has a digital front end followed by an all analog signal path output. Each voice has five high resolution digital oscillators, a digital character effects section, a resonant Curtis low-pass filter, a high-pass filter, a tune-able feedback circuit, a four-tap delay line with feedback per line, four loopable five-stage envelope generators, four syncable LFOs with slew and phase offset, a sophisticated arpeggiator, and a sixteen slot modulation matrix with 26 mod sources and 97 modulation destinations. The Prophet 12 is packed with a plethora of sonic potential and power!

The digital oscillators can be frequency and amplitude modulated by each other with incredible accuracy. They can be freely assigned in whatever operator and modulator configurations you would choose. You can even assign each of the oscillators to modulate LFOs, envelopes, and filters.

The Prophet controls

The Prophet's sleek and instinctive interface invites full control of the synth. Every parameter is fully programmable and editable from the front panel. The controls are laid out in a coherent and logical fashion allowing quick and precise access in the studio and on stage.

The Prophet's full-sized, five-octave, semi-weighted keyboard with velocity and channel aftertouch is rugged without sacrificing great feel and playability. Two backlit, smooth and precise pitch and mod wheels are accompanied by two location and pressure sensitive touch sliders. The Prophet offers a myriad of controls for creation and performance of its innovative sounds.

A prophecy for the future

The Prophet 12 is the most cutting edge hybrid synthesizer on the market and defines what a modern polyphonic synthesizer is. Designed and manufactured in San Francisco, the Prophet 12 has a glorious combination of form and function in a sturdy, yet refined and elegant build.

Dave has been a pioneer in the field for 35 years. After creating such greats as the Prophet-5, '08, and VS, this is his favorite Prophet yet!


Five DSP-based oscillators per voice (including one sine wave sub oscillator)

Four classic wave shapes (saw, square, triangle, sine) per oscillator

Twelve selectable complex shapes per oscillator

Three noise types per oscillator: white, pink, violet

Analog VCAs

Shape modulation

Oscillator cross modulation: frequency modulation (FM) and amplitude modulation (AM)

Hard sync on each of the four oscillators

Character Effects

Five high-quality digital effects. Thicken the signal and add harmonics or completely destroy the signal pre-filter.

Girth and Air are high and low shelf equalizers with harmonic excitement. Useful for thickening and/or adding air to the signal.

Hack and Decimate are sample and bit rate reduction algorithms which can add subtle grit or completely destroy the signal. It's harsh yet musical!

Drive is a soft saturator for adding soft distortion and harmonic content to the signal


Famed Curtis 2- or 4-pole resonant analog low-pass filter (self oscillates in 4-pole mode) per voice

2-pole resonant analog high-pass filter per voice

Feedback and Delay

Tuned feedback

Four-tap syncable multi delay with feedback and amount per delay per voice


Four Delay + ADSR envelopes (LPF, VCA , and two Auxiliary envelopes)

Auxiliary envelopes 3 and 4 freely assignable to multiple modulation destinations

All envelopes can repeat/loop


Four syncable LFO's with phase offset and slew per LFO


16 x 2 modulation matrix with 26 mod sources and 97 mod destinations

Modulation assignment buttons enable quick and easy modulation routing


Sophisticated programmable arpeggiator with up, down, up+down, random, assign modes

Re-latching arpeggiator

Programmable Distortion

Independent programmable stereo analog distortion per layer.


More than 50 knobs and 50 buttons enable deep and comprehensive editing with little to no menu diving.

Backlit pitch and mod wheels are easily visible in low light situations and have a smooth yet precise feel and response.

Independently adjustable upper and lower pitch wheel range.

Two assignable position- and pressure-sensitive latchable touch sliders for enhanced interactivity and control.

Full-sized, 5-Octave, semi-weighted keyboard with velocity and channel aftertouch


396 user and 396 factory programs

Direct program access using numeric keypad and dedicated User, Factory, and Bank buttons

Playlist mode for generating easily accessible setlists of your favorite programs. Create four play lists with up to forty programs each!

Prophet 12 Signal Flow Diagram


1 MIDI In, 1 MIDI out, and 1 MIDI Thru port

USB port for bidirectional MIDI communication

1 Sustain/footswitch input

2 expression pedal inputs

Main stereo output (2 x 1/4" phone jack)

Layer B stereo output (2 x 1/4" phone jack)

Headphone out (stereo 1/4" phone jack)


1 universal IEC AC power inlet for internal power supply

Operates worldwide on voltages between 100-240v, 50-60Hz, 30 watts maximum power consumption

Physical Specs

Oiled bubinga wood end panels and trim

38.4" L x 12.8" W x 4.15" H (97.5 cm x 32.5 cm x 10.5 cm)

26 lbs. (11.8 kg)

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