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![](/techspec/_05arp-no.gif) ![](/techspec/_06sequencer-no.gif) ![](/techspec/_07vocoder-no.gif) ![](/techspec/_08fx-yes.gif) ![](/techspec/_09drums-no.gif) ![](/techspec/_10hd-no.gif)
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![](/techspec/_13midi-no.gif) ![](/techspec/_14cv-no.gif)
![](/techspec/_15module-no.gif) ![](/techspec/_16key-no.gif) ![](/techspec/_17rack-no.gif) ![](/techspec/_18table-yes.gif)
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grp synthesizer a2
price : $1,699.00
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a little great analog synthesizer with all the grp heritage of sound and capabilities. wide 8 vertical space in 5u format or, if you prefer, optionally rack mountable, with a wooden sided dedicated cabinet,
the grp a2 analog synthesizer has midi in and analog cv/gate connections. it offers two big oscillators with the classic analog waveforms, from grp, plus super saw and super triangle; the great 12db/oct; grp
state variable filter, one ring modulator (have you ever tried to ring modulate a 9-components super saw?), one noise generator, one amplifier, one master out section with a couple of gorgeous analog
vumeters. there are a couple of envelope generators, the filter-dedicated one with looping capabilities as on big grp a4 synth and a couple of lfos/modulation routings.
the on board arpeggiator can be clocked by internal clock, externalanalog clock or midi clock; easy and fun, it's a breeze to use. grp a2 analog synthesizer is built like a tank. but is far 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
download the user manual here.
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