"The Grp Synthesizer was developed to offer the enthusiasts of analogical sound a more affordable synth in terms of price and dimension in comparison with the precursor model A8, without renouncing to the quality and performance that characterize our synths. Being featured with the same step sequencer used for the Grp A8, this synth is able to guarantee nearly infinite sound combinations due to the new characteristics which have been implemented in the instrument, with the possibility to filter out external signals and to manage all the important parameters of the analogical generation chain.
The A4 has been derived from an audio section of the Grp A8 (of which it takes over the structure) and it results more versatile and eclectic passing from smooth and extreme clean sonorities to harder sounds thanks to the two distortion installed in the synth (one for each filter) and due to the possibility to make interact synth, ring modulator, external signals and step sequencer in only on mechanism with an immense sonority power. Furthermore, the Loop EG function enables the conditioned and unconditioned repetition of the envelope, in order to reach particular and temporal articulated sonorities."
"From the first announcement, the 2013 Series of Grp A4 Synthesizer has reached a big impact; until now, there are 28 booked machines. Now, we confirm as stated that production will start from the 1rst of June and, still as stated, from the 1rst of May you can send the preorder fee. We’ll communicate in advance all the bank data for the transfer. Booking will remain open until the first days of June, so - if you are still thinking about it - it wil be still possible to grab a machine till June."
"Excellent condition GRP A4. This is one of two (that I am aware of) that were built into a travel case. There is a cover (not pictured) as well. Comes with power cable."
"Italian made GRP A-4 Analog Synthesizer.
Main Features: (3) full-feature oscillators, plus (2) discrete LFO's. S&H, Noise, Mixers, (2) ADSR, 16-Step sequencer, A-440 generator, 12dB State variable filter and 24dB Low pass filters, portamento, Auto-pan, accepts external signals, Stereo Headphone TRS jack. CV/gates in and out. MIDI and USB in rear. Complex routing features: provides virtually the same flexibility of a modular without the need for patching. The A-4 is single-voice, and does not store patches.
Audiophile timbral quality. Truly holds its own with ANY other synth. One of the most beautiful synths ever made.
This is one HELL-of-a synthesizer, semi-rare. Will retain its value; so buy it, use it, then sell it for what you paid for it. This a unique opportunity."
"This was built to order by GRP in 2013. They make a limited somewhat annual run with about a 6-9 month wait.
3 VCO analog mono beast of a semi modular. Dual filters, Rich ladder VCF, cool Berlin School step sequencer with all the bells and whistles, like step repeat, back and forth, odds and evens for counter point type sequences."
"An in-depth store & synth studio tour of Noisebug in Pomona, California -- including the Noisebug synthesizer showroom, modular synths, and synthesizer music event / performance space.
Join me on this journey into Noisebug's storefront location with Blake Griffith, General Manager & musician. Noisebug is owned by Chuck Oken, Jr. and the current space was the original Analogue Haven location, which was started in 2005.
Blake was kind enough to provide me with a Noisebug synthesizer studio and store tour, and gives great commentary and insight into the history of the store, various analog, digital and modular synthesizers, and the synth industry as a whole.
Noisebug stocks keyboards, synthesizers, drum machines, electronic percussion and desktop modules from all over the world. They specialize in Multi-Format Modular Synthesizers, including Moog Format (MU), Buchla Format, Eurorack, Serge, 5U and beyond.
0:00 - Intro
1:04 - History of Noisebug
2:16 - Record collection
3:22 - Grooveboxes, effects pedals, pocket operators
4:23 - Showroom floor - Arturia Drumbrute Impact, Lyra-8, Dreadbox Medusa
6:56 - Moog Mother 32, Elektron Digitakt & Digitone
7:50 - Dreadbox Erebus
8:18 - Passion for synthesizers & modular
10:57 - Exclusive modular partnerships - Moon Modular, Suit & Tie Guy Eurorack, Free State FX, Buchla
12:20 - Elby Designs Pixie
12:54 - Analogue Solutions Vostok (Deluxe)
13:55 - Jomox Alpha Base
14:10 - Vermona DRM1
14:22 - Nord Piano 3, Nord Lead A1
14:40 - Sequential Prophet X
14:51 - Yamaha MODX
16:10 - Kurzweil PC3K7
16:48 - Korg Arp Odyssey, Moog Sub 37, Moog Sub Phatty
17:14 - DSI Rev 2, Korg Prologue, Arturia Matrixbrute
17:32 - Studiologic Sledge, Roland System-8
18:35 - Modular loft
19:12 - Roland System 500, Elby Serge
19:30 - Analogue Systems Apprentice
20:14 - Eurorack
20:37 - GRP A2
21:11 - Doepfer A100 Eurorack system
21:22 - Waldorf KB37
21:36 - 5U large format modular - Free State FX, Analog Craftsman, Synthetic Sound Labs, Noise Engineering, STG,
22:07 - Moon Modular 10-year Anniversary "System X"
23:04 - Gert Jalass (Moon Modular founder/owner)
23:36 - Moon Modular 5U system
23:42 - Buchla 200e
24:14 - Intermission
25:03 - Performance space intro
25:27 - Noisebug synth performance space
25:47 - Moog One
26:00 - Chuck's personal synth collection - Theravox, Serge modular TTSH, Arp 2600 clone, GRP A4, Waldorf Q+, Waldorf XTK, Roland V-Synth
26:35 - 5U large format modular systems
26:44 - How artists can perform at Noisebug
28:07 - Blake's music
29:00 - NAMM 2019 - Haken ContinuuMini, Le Bois de Luthier
30:53 - Moog One
32:18 - Shipping/Warehouse area
32:26 - Online business
32:58 - Famous artists
34:18 - Synth industry trends & future outlook
"Huge 3 oscillator synth. This machine is simply packed with features. 3 oscillators, 2 LFOs, step sequencer, 2 filters (one LP, one state variable), looping envelopes, overdrive to the filters, auto-pan, MIDI, patch points - this has it all.
If you're looking for an addition to your setup that can bring that old school Berlin style sound and sequencing or you are looking for a sonic playground to explore uncharted sounds, this is the box for you.
The mod routings are comprehensive and easy to follow. The filters can go everywhere from subtle to cranking squelchy resonant mayhem. After a year with the GRP, you'll still be discovering new things it can do.
MIDI makes it easy to hook up and start playing and you can even decide to control some VCOs from MIDI and others from the sequencer. Very cool."
"On this video, sound from Acidlab MIAMI drum machine is used for extracting gate and envelope follower to drive filters and envelopes in Grp A4 Analog synthesizer. Later on, a simple monophonic sequence from A4 is used AS AUDIO SIGNAL for extracting pitch into ESP Section of KORG MS-20 Kit Synthesizer."
"please don't take this jam too seriously as I'm only exploring this fantastic sounding machine I'm using since few days (even I've received 3 weeks ago I was not able to play with it when I was abroad !)
many things to learn on synthesis but this is motivating!"
Update: this one was re-listed. The link above will take you to the new listing.
"Offers 3 full-feature oscillators, plus 2 discrete LFO's. S&H, Noise, Mixers, 2 ADSR, 16-Step sequencer, A-440 generator. 12dB State variable filter and 24dB Low pass filters, Glide, Auto-pan, accepts external signals, Stereo Headphone TRS jack. CV/gates in and out. MIDI and USB in rear. Complex routing features: provides virtually the same flexibility of a modular without the need for patching. The A-4 is single-voice, and does not store patches.
Audiophile timbral quality. Truly holds its own with ANY other synth. One of the most beautiful synths ever made."
"the grp r24 is a 8x3 analog step sequencer firmly based on the mighty step sequencer previously developed in grp a8 and a4 analog synthesizers. the new r24 is full of control capability with cv/gate, midi and usb connections. hardware-wise, is stand-alone self powered, with hardware compatibility for mount on 5u module format; you can use in stand alone with its internal power, or you can install in your dot.com/cotk/moon modular system. r24 respects electrical and mechanical standards for the above manifacturers.
with the appropriate brackets included in the package the machine can be easily installed in a 19 "rack still, you can use r24's own cabinet as a "presto-cabinet" for powering and using your spare 5u modules. r24 has 64 internal memories for store and retrieve separate sequences; each sequence can be set in 8x2, 16+8 or 24 mode, with any step lenght user's selectable. r24 can act as cv/gate sequencer or as midi sequencer, with separate rows for midi note selection and for key velocity step adjust."
"Because of the Maya calendar I made a short doomsday track with the Grp A4, but for the old world still seems to be there, I added a bell sound and made a short christmas video."
"The Grp R24 is a 8x3 analog step sequencer firmly based on the mighty step sequencer previously developed in Grp A8 and A4 Analog Synthesizers. The new R24 is full of control capability with CV/Gate, MIDI and USB connections. Hardware-wise, is stand-alone self powered, with hardware compatibility for mount on 5U module format; you can use in stand alone with its internal power, or you can install in your Dot.com/Cotk/Moon Modular system. R24 respects electrical and mechanical standards for the above manifacturers.
With the appropriate brackets included in the package the machine can be easily installed in a 19 "rack
Still, you can use R24’s own cabinet as a “presto-cabinet” for powering and using your spare 5U modules.
R24 has 64 internal memories for store and retrieve separate sequences; each sequence can be set in 8x2, 16+8 or 24 mode, with any step lenght user’s selectable.
R24 can act as CV/Gate sequencer or as MIDI sequencer, with separate rows for MIDI Note selection and for Key Velocity step adjust."
