Grp Synthesizer

Grp Synthesizer is the Italian manufacturer of the famous A4 synthesizers.

Grp Euro Rack modules contains circuits already tested in previous models A8, A4 and A2 analog synthesizers. All modules are skiff-friendly, with a minimum depth, allowing housing in every cabinet. Each module has a vast array of Inputs and Outputs, with no-frills construction and structure. As usual, there's no compromise in material and components.

http://www.grpsynthesizer.it/index.php/en/products/eurorack-grp-en.html

Grp Synthesizer - Output Module
Grp Synthesizer - Output Module

Four Channel Output Mixer
Ins 1,4 freely pannable L-R
Ins 2,3 hard pannedl full L-R
Stereo Main Out w sep Levels and Vu-Meters.
Two Phones Out with adjustable Volume
Panel Width: 16 HP
+12V =…
€ 379,⁰⁰
Grp Synthesizer - VCO
Grp Synthesizer - VCO

Oscillator w Sine, Triangle, Saw,Pulse Sub octave (-1/-2)
Octave 64’-2’,three CV In; PW/PWM w CV in
Hard Sync , FM2 bus Exp/Lin
Panel Width: 10 HP
+12V = 60mA
-12V = 50mA
+5V = 0mA

Manual
€ 330,⁰⁰
Grp Synthesizer - VCF 24dB Low Pass
Grp Synthesizer - VCF 24dB Low Pass

Transistor Ladder Filter w 1-4 poles LP and SELECT aux out
Two audio in (one adj) and two CV In (one adj)
Cutoff, Res, w Automatic Gain Change and ext CV in
Distortion, Amt Res CV In
Panel…
€ 379,⁰⁰
Grp Synthesizer - VCA
Grp Synthesizer - VCA

Amplifier with selectable Lin/Exp resp..
Audio Input w adj level, Initial Gain and CV1 attn..
Two CV Ins, two Outs w standard and rev polarity
Panel Width: 6 HP
+12V = 10mA
-12V = 12mA
+5V = 0mAManual
€ 154,⁰⁰
Grp Synthesizer - S&H Noise
Grp Synthesizer - S&H Noise

Sample & Hold wint Noise Generator Int/Ext clock source
Input Level, Glide Amount and Internal Clock Rate
Noise Generator has White, Pink and Low Freq Noise
Panel Width: 6 HP
+12V = 15mA
-12V =…
€ 189,⁰⁰
Grp Synthesizer - Multi
Grp Synthesizer - Multi

Three multiples with 4, 6 and 4 connections
Panel Width: 4 HP
+12V = 0mA
-12V = 0mA
+5V = 0mAManual
€ 58,⁰⁰
Grp Synthesizer - Mixer
Three-channel Audio/CV Mixer
Each one w Input Level
Main Out Level and dual output, with standard and inv polarity
Panel Width: 6 HP
+12V = 10mA
-12V = 10mA
+5V = 0mAManual
€ 142,⁰⁰
Grp Synthesizer - Fixed Filter Bank
Grp Synthesizer - Fixed Filter Bank

Twelve BP filters, one HP, one LP at spaced cutoff frequencies
Panel Width: 16 HP
+12V = 62mA
-12V = 60mA
+5V = 0mAManual
€ 379,⁰⁰
Grp synthesizer - Envelope Follower
Grp synthesizer - Envelope Follower

CV and Gate extraction from audio signal with Line/Mic selectable level
There is a pre-amped audio signal output
Panel Width: 6 HP
+12V = 18mA
-12V = 20mA
+5V = 0mAManual
€ 165,⁰⁰
Grp Synthesizer - ADSR
Grp Synthesizer - ADSR

Four stage Envelope Generator
Three time ranges selectable
Gate In and Trig In. Gate In available at Thru Output
Two outputs with standard and inv CV Polarity
Panel Width: 6 HP
+12V = 12mA
-12V = 10mA
+5V =…
€ 154,⁰⁰
Grp Synthesizer - 12dB SVF
Grp Synthesizer - 12dB SVF

State Variable Filter with:
12db HP; Two pole high pass filtering.
6db BP; One pole band pass filtering
12db LP; Two pole low pass filtering
NOTCH; One pole band reject filtering
auxiliary Select Out;…
€ 330,⁰⁰
Grp Synthesizer - Dual LFO
Grp Synthesizer - Dual LFO

Two Low Frequency Oscillators
Each with 3 selectable freq ranges
Dedicated outs for ramp-triangle-saw and pulse-square waveforms
Panel Width: 6 HP
+12V = 12mA
-12V = 10mA
+5V = 0mAManual
€ 165,⁰⁰