Sequential Circuits Pro-One

MONOPHONIC  |  BACK

Sequential Pro-OneThe Pro-One is a monophonic (one-voice) keyboard synthesizer. Its principal sound sources are two voltage-controlled oscillators (VCOs), referred to as OSC A and OSC B. OSC A, OSC B, and a white noise source can be mixed into the resonant low-pass filter (VCF). The filter modifies the voice timbre under control of its four-stage envelope generator. The filter may also serve as a sound source. This stage is followed by a voltage-controlled amplifier (VCA), which shapes the voice amplitude also under control of a four-stage envelope generator. The keyboard provides frequency control voltage (KYBD CV) for the oscillators and filter, and generates a GATE which controls the envelope generators.

In addition to this basic voice, the Pro-One has extensive modulation provisions. Three modulation sources are available: the filter envelope generator (FILT ENV), OSC B, and a separate low-frequency oscillator (LFO). Each can be mixed and routed for either DIRECT or WHEEL-controlled modulation of five destinations: OSC A frequency (FREQ), OSC A pulse- width (PW), OSC B FREQ, OSC B PW, and filter frequency (FILTER).

This complement of analog synthesizer modules and the routings provided for their interconnection have been well-proven in the Pro-One's ancestors, the Prophet-5 and Prophet-10 polyphonic synthesizers. Besides allowing the synthesist to play up to five or ten notes at one time, these two instruments contain microcomputers which program all the control settings comprising a sound. The Pro-One is neither preset nor programmable: you always "patch" the precise sound you want with the knobs and switches on the control panel. But the Pro-One voice itself is identical to a single Prophet voice, so it is capable of as much range and expression.

Possessing the Prophet's sound and all standard monophonic synthesizer features, the Pro- One's own microcomputer makes possible innovations unheard of on a lowcost synthesizer; a 40-note sequencer, an arpeggiator, keyboard modes such as single- or multiple- triggering, and the unique automatic glide feature. An audio input with preamplifier and automatic GATE generator allows synthesizer processing of low-level inputs such as a microphone or electric guitar. The audio output can drive a monophonic or stereo amplifier, or stereo headphones. Of special interest to computer enthusiasts, the Pro-One readily interfaces for control by an external microcomputer.

Sequential Circuits Pro One Synthesizer Synth with Kenton MIDI to CV Interface
Sequential Circuits Pro One Synthesizer Synth with Kenton MIDI to CV Interface
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Sequential Circuits Pro One Serviced from Hey Day Music Asheville NC
Sequential Circuits Pro One Serviced from Hey Day Music Asheville NC
$1,000.00 (1 Bid)
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SEQUENTIAL CIRCUITS PRO ONE Vintage Analog Synthesizer Synth Orig Owners Manual
SEQUENTIAL CIRCUITS PRO ONE Vintage Analog Synthesizer Synth Orig Owners Manual
$99.99
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works with Sequential Circuits Pro One 1 synthesizer
works with Sequential Circuits Pro One 1 synthesizer
$19.95
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Sequential Circuits  Prophet 5  Prophet 10  PRO ONE  Fuse Holder Black
Sequential Circuits Prophet 5 Prophet 10 PRO ONE Fuse Holder Black
$19.00
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Sequential Circuits  Prophet 5  Prophet 10  PRO ONE  Fuse Holder Red
Sequential Circuits Prophet 5 Prophet 10 PRO ONE Fuse Holder Red
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1982 Roland JP 8 Moog Rogue Sequential Circuits Pro one Bob James Keyboard
1982 Roland JP 8 Moog Rogue Sequential Circuits Pro one Bob James Keyboard
$14.29
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ARP AXXE Odyssey Black  Orange Models or Sequential Circuits Pro One Pick
ARP AXXE Odyssey Black Orange Models or Sequential Circuits Pro One Pick
$13.99
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Sequential Circuits Pro One Rotary switch
Sequential Circuits Pro One Rotary switch
$12.90
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Sequential Circuits Pro One 4 Position Rotary Octave Switch NEW
Sequential Circuits Pro One 4 Position Rotary Octave Switch NEW
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Sequential Circuits  Prophet 5  Prophet 10  PRO ONE  Fuse cap black
Sequential Circuits Prophet 5 Prophet 10 PRO ONE Fuse cap black
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Sequential Circuits  Prophet 5  Prophet 10  PRO ONE  Fuse cap red
Sequential Circuits Prophet 5 Prophet 10 PRO ONE Fuse cap red
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Sequential Circuits Pro One  1 4 inch phone jack All Except Audio in out
Sequential Circuits Pro One 1 4 inch phone jack All Except Audio in out
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Synthesizer Ear Force Sequential Circuits Pro One Fridge Magnet 2 1 2x3 1 2
Synthesizer Ear Force Sequential Circuits Pro One Fridge Magnet 2 1 2x3 1 2
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Sequential Circuits  Pro One 78M15 Voltage regulator
Sequential Circuits Pro One 78M15 Voltage regulator
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Sequential Circuits VINTAGE style 1 Button Badge Set Prophet 5 Pro One pins
Sequential Circuits VINTAGE style 1 Button Badge Set Prophet 5 Pro One pins
$5.47
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Sequential Circuits Pro One Turbo CPU + Midi Pro Serviced w Restoration
Sequential Circuits Pro One Turbo CPU + Midi Pro Serviced w Restoration
$3,399.00
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Sequential Circuits Pro One Pro Serviced w Restoration
Sequential Circuits Pro One Pro Serviced w Restoration
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Sequential Circuits Pro One badges
Sequential Circuits Pro One badges
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