The Prophet 12 61-Key Polyphonic Analog Synthesizer from Dave Smith Instruments is a 12-voice polyphonic synthesizer with 61 semi-weighted velocity sensitive keys with aftertouch. Each of its 12 voices is powered by 5 oscillators that provide saw, square, triangle, and sine waveforms along with 12 selectable shapes as well as 3 types of noise. The oscillators are further shapeable via their AM and FM modulation and analog VCAs.

Beyond its oscillators, the Prophet 12 provides numerous options for sound creation. It includes 5 digital effects as well as analog high-pass and low-pass filters. The synth has no shortage of modulation capabilities, with a 16 x 2 modulation matrix with 26 sources and 97 destinations. The Prophet 12 has over 50 knobs and over 50 buttons that provide full access to all its parameters and effects, giving you hands-on control. The Prophet 12 has 5-pin DIN MIDI input, output, and thru and also accepts MIDI data via its USB port.

The Prophet's Performance
The Prophet 12's 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 digital oscillators can be frequency and amplitude modulated by each other with 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's Control
The Prophet's 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 fashion that allows 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 designed for playability. Two backlit pitch and mod wheels are accompanied by two location and pressure sensitive touch sliders
Effects
  • 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

Keyboard 61 semi-weighted keys with velocity and aftertouch
Voices 12
Oscillators 5x DSP-based oscillators with per voice; 4 with hard sync
Waveform Type Sawtooth, square, triangle, sine (per oscillator)
12x selectable complex shapes (per oscillator)
Generators 3x Noise generators; white, pink, violet
VCA Analog
Modulation Shape
Cross Modulation: FM and AM
Effects 5x digital effects; girth, air, hack, decimate, and drive
Filters 1x Curtis 2- or 4-pole resonant analog low-pass filter per voice (self oscillating in 4-pole mode)
1x 2-pole resonant analog high-pass filter per voice
Feedback and Delay Tuned feedback 
4x tap-syncable multi delay with feedback and amount per delay per voice
Envelope 4x delay + ADSR envelopes (LPF, VCA, 2 auxiliary envelopes)
LFO 4x syncable LFOs with phase offset & slew per LFO
Modulation 16 x 2 modulation matrix with 26 modulation sources and 97 modulation destinations
Arpeggiator Programmable arpeggiator with up, down, up+down, random, assign modes with re-latching
Distortion Independent programmable stereo analog distortion per layer
Controls 50+ knobs
50+ buttons 
1x backlit pitch wheel
1x backlit mod wheel 
2x assignable position and pressure-sensitive latchable sliders
Memory 396x user programs
396x factory programs
I/O 1x 5-pin DIN MIDI input 
1x 5-pin DIN MIDI output
1x 5-pin DIN MIDI thru
1x USB MIDI port
1x 1/4" (6.3 mm) sustain footswitch input
2x 1/4" (6.3 mm) expression pedal input
2x 1/4" (6.3 mm) main outputs
2x 1/4" (6.3 mm) layer B outputs
1x 1/4" (6.3 mm) stereo headphone output
Power Supply 100-240 V, 50-60 Hz; 30 W maximum power consumption
Dimensions (LxWxH) 38.4 x 12.8 x 4.2" (97.5 x 32.5 x 10.5 cm)
Weight 26.0 lb (11.8 kg)

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