Sequential_Circuits Pro-One
Pro One
Released: 1981
MSRP: $995US
Synopsis:
Monophonic Prophet5.
Architecture Class: Conventional (subtractive).
Ebay Description:
The Sequential Circuits ProOne is a 37 key, monophonic analog synthesizer, featuring programmable dual oscillators, resonant low pass filter (24dB CEM), dual envelopes, glide, and LFO, along with an arpeggiator and sequencer.
Physical
Form Factor
Dimensions
Weight
Audio Input
Audio Output
Communication Port
Control Input
Control Output
Switch Input
Power
37 keys
?
?
Filter
stereo
no
Filter:1V/oct (0-10V)
CV:1V/oct (0-10V)
Gate/Clk:+5V
CV:1V/oct
Gate:+5V
no
wired
Interface
Compatibility
Multitimbral Memory
Program Memory
External Storage
External Programming
UI Input
UI Output
N/A
N/A
-
no
no
button/knobs
LED
Architecture
Multitimbral
Polyphony
Unison
Architecture
no
1
N/A
VCO1+VCO2+Noise->VCF->VCA
Output
Effects
Pan Modulator
Volume Modulator
Headphone
no
no
VCA-EG
shared
Control
Arpeggiator
Arpeggiator External
Sequencer
Sequencer Memory
Sequencer External
Continuous
Program Change
yes
no
yes
40 notes
no
Pitch-Wheel
Mod-Wheel
no
Keyboard
Key Pressure
Chord Memory
External Control
External Sustain
Key Scaling
Velocity Curves
no
no
no
no
yes
no
Source
Name
Signal Class
Waveform
Octave Range
Amplitude Modulator
Harmonics Modulator
Pitch Modulator
Wave Assign Modulator
VCOA
analog
pulse
saw
4
no
FM:VCOB
PWM:
LFO
Noise
VCF-EG
VCOB
glide
LFO
Noise
Pitch-Wheel
VCOB
VCF-EG
VCOB
analog
pulse
saw
triangle
4
LFO
no
PWM:
LFO
Noise
glide
LFO
Pitch-Wheel
Noise
Noise
analog
noise
-
no
no
no
Filter
Name
Signal Class
IC
Resonant
Shape
Frequency Modulator
Resonance Modulator
Shape Modulator
VCF
analog
CEM3320
yes
24dB low pass
key
LFO
Noise
VCF-EG
VCOB
no
Envelope
Name
Level
Rate
Loop
Polarity
Trigger
Level Modulator
Rate Modulator
VCA-EG
sustain
attack
decay
release
no
no
no
no
no
VCF-EG
sustain
attack
decay
release
no
no
no
no
no
LFO
Name
Waveform
Delay
Polarity
Sync
Delay Modulator
Level Modulator
Rate Modulator
LFO
saw:up
square
triangle
no
no
no
Mod-Wheel
no
