Voltage Controlled Oscillator 1, 2
Wide audio range (32’-2’) w. Tune & Fine
Five analog waveforms (Triangle, Triangle & Saw summed, Saw, Saw & Variable Pulse summed, Variable Pulse);  SuperSaw and SuperTriangle (only VCO2)
manual PW & PWM;
FM Exp w. Amt (from VCLFO1, LFO2, VCO1, 2,  Noise, RM, S&H,EG1, EG2, Aft, ModW, VCF Out) w. phase rev
Hard sync (VCO 1 master)
Kybd on/off

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Ring Modulator
Ring Mod Sources: VCO1  & VCO2.

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Noise Generator
White Noise.

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Audio Mixer
Separate level controls for VCO 1, 2, Ring Mod, Noise.

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Filter Section
12 dB/Oct State Variable
Mode (12dB HP, 6 dB BP, 12 dB LP, 6 dB Notch)
Cutoff Frequency; Resonance
FM Amt (from   VCLFO1, LFO2, VCO 1, 2,  Noise, RM, S&H, EG2, Aft, ModW, Bend)
Kybd Track 0-120%
Distortion.

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Filter section can be configured in  Direct Out (LP goes on Left Audio Out, HP goes on Right AudioOut).

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Voltage Controlled Amplifier
Dedicaded Envelope Generator (see below)
Control Selection (dedicated EG2, ON-hold, External CV)

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Stereo Main
Master Volume, analog Vu-meters.

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Envelope Generator 1
Multi Stage Loopable Env (Attack, Decay, Sustain Lev, Sustain Time-Only in Loop On, Release);
EG Amt
EG time goes from 1msec to 20 sec.
Loop Envelope: loop from Attack to Release, w. Sustain Time selectable.
Loop Mode Switch: Loop Off: EG as standard ADSR, no Sustain Time.
Gate: EG loops from A to S (w. Sustain Time max 60”) as long as Gate is On.
Auto: EG full loop, from A to R; independent  from Gate.

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Envelope Generator 2
Attack ,Decay/Release

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Voltage Controlled Low Frequency 1
Frequency (from very low to 2500 Hz)
Waveform (Square, Triangle, Saw, Ramp)
FM Amt , FM Sources (Key, LFO)
Key Sync (Off – On)
Shaping LFO out (from: Hold,Aft,ModW)

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Voltage Controlled Low Frequency 2
Frequency
Freq Range (Low-Mid-High)
Waveform (Triangle, Square)
Shaping Select (Hold, Aft, ModW)
Indipendent Send Modulations for: VCO 1, 2; VCF Cutoff.

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Sample & Hold
Frequency
Frequency Source (Int, Gate,Ext)
LED Frequency
S&H Source (Noise, LFO2)
The S&H Clock can be routed to EG firing; there are three options: Off – no routing; Gate – the S&H clock is ANDed with keyb/ext/manual Gate; Auto – EGs always fired from S&H.

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Tuning – Midi
Master Tune
Portamento Time
Bend Amount
VCO 1 Portamento On/Off
VCO 1 Bend On/Off
Hold On/Off
Midi to CV On/Off
MIDI Interface: MIDI channel set at Power-On w. First MIDI Note received
A2 receives: MIDI Note On/Off, Bend, Modulation, Aftertouch, Damper, MIDI Clock.

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Arpeggiator
Frequency and PW Gate (Legato/Staccato)
Controls Run/Stop user’s selectable,
Hold Mode for latching arpeggio
Selectable Advance Mode (Up, Down, U/D, Random);
Arpeggio Step Repeat (1x no repeat, 2x, 3x);
Arpeggio Octave Range (x1, x2, x3, x4)
Arpeggio Clock Source Selectable (Internal, External Analog Pulse, MIDI Clock)
Arpeggio Step Size (quarter note, eight note, sixteen note)

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Connections
Audio: Stereo Phones Out; Left/LP Out; Right/HP Out.
CV Control In 1: Tip = Filter Cutoff CV In / Ring = LFO 1 Rate CV In
CV Control In 2: Tip = Amp Level CV In / Ring = VCO 2 Frequency CV In
External Analog Keyboard In: CV 1 (1V/Oct), Gate In (0/+5V)
ARP/S&H Clock In: External Clock In