• Two oscillators with 5 waveforms each, the first VCO offers additional PWM at two waveforms, the second VCO a parameter called “Shape” which fades in nine copies of the selected waveform for super-saw and super-triangle sounds. Hard Sync and (exp.) FM
  • Ring modulator, noise generator, audio mixer
  • Multimode filters with 12db and LP, HP, BP and Notch
  • Two envelopes ADSR or AD/A(H)R
  • Two LFOs (up to 2,500Hz) with different waveforms
  • Simple Arpegiator and Sample and Hold
  • MIDI integration

Grp Synthesizer A2

 1.785,01For European customers, please select your country to view the correct price including vat

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  • Two oscillators with 5 waveforms each, the first VCO offers additional PWM at two waveforms, the second VCO a parameter called “Shape” which fades in nine copies of the selected waveform for super-saw and super-triangle sounds. Hard Sync and (exp.) FM
  • Ring modulator, noise generator, audio mixer
  • Multimode filters with 12db and LP, HP, BP and Notch
  • Two envelopes ADSR or AD/A(H)R
  • Two LFOs (up to 2,500Hz) with different waveforms
  • Simple Arpegiator and Sample and Hold
  • MIDI integration

Grp Synthesizer A2

A great little analog synthesizer in the tradition of Grp sound. 8 vertical spaces wide 5U, mounted in its cabinet with rigorous solid cherry sides, with MIDI and Analog CV/Gate connections. This little beast has two powerful oscillators with classic Grp waveforms, plus Super Saw and Super Triangle; the powerful Grp State Variable 12 dB filter, a Ring Modulator (have you ever tried to ring modulate a nine component Super Saw?), a Noise Generator, a
Amplifier and a pair of splendid analog Vumeters. Then there is a pair of Envelope Generators, the filter one has the loop engine already tested in the A4 Analog Synthesizer, and a pair of LFO/Modulation routing. The onboard arpeggiator is simple to use, can be driven by Internal Clock, MIDI or External Analog, and offers several fun tricks. Grp A2 Analog Synthesizer is built like a tank. But it is much more dangerous.


Specifications

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

Ring Modulator

Ring Mod Sources: VCO1  & VCO2.

Noise Generator

White Noise.

Audio Mixer

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

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.

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

Voltage Controlled Amplifier

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

Stereo Main

Master Volume, analog Vu-meters.

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.

Envelope Generator 2

Attack ,Decay/Release

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)

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.

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.

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.

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)

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

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