Crumar DS-2 Rare Analog Synth in Excellent Condition

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"Crumar DS-2 Rare Analog Synth. Super rare 2 voice analog synth (yes it's full analog) with polyphonic digital synth that can be turned on or off. This synth sounds huge and the poly synth sounds great under the mono or by itself. LFO 2 has a very rare ladder mode not found on any synth plus S&H. This is like a cross between A Pro-1 and and Oberhiem. Has all knobs but the Speed Glind. Powers on and works perfectly but sold as is. Amazing condition for how rare and old this synth is.

Here's a classic video showing what it can do." [Jexus video posted here]

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Crumar DS-2

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Crumar DS-2 Digital Synthesizer

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"Vintage Crumar DS-2 Synthesizer. It powers on and works. The ds2 is a very rare (500 made) Crumar synth which has digital with analogue filters , 2 x lfo , weird lfo shapes and to top it off a 44 key string synth section. The machines string section makes super cheesy and cool 60's and 70's pad sounds and just plain psychedelic wavering timbres."

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Crumar DS-2 Digital Synthesizer SN 00054

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Crumar DS-2 Analog Synthesizer with DCO's

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"This synth could use some tlc.

It makes sound in it's current condition and most of the functions seem to work in general.

Unfortunately, it only works when set to certain waveforms in the two LFO's so it's going to need some attention.

It only makes sound when LFO 1 is set to ramp and LFO 2 is set to square."

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crumar ds-2 demo

Published on May 16, 2018 Really Nice Audio

"Before I gave the synth back to its owner I recorded 10 patches with a touch of Eventide Orville for FX.
Best heard on full range speakers"

Crumar DS-2 SN 00019

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"**Has some major functional problems** - it will need work: Only one of the VCOs seems to work and the poly section is not outputing, many of the sliders and pots are scratchy, the VCF and filters seem to work correctly, all keys seem to work, the bender bar is hard to move, and the Pitch poly pot is a little warped. Still makes some cool weird sounds, but definitely not in normal working order.

Includes User and Service Manual - which include schematics, parts lists, etc..."

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Crumar DS-2 Analog Synthesizer with MIDI Added

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Published on Jan 2, 2015 Farsetto Nero

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"The Crumar DS-2 is a really big sounding analog synth. Made my Crumar in the late 70's, it was apparently once of the first DCO synths that was still fully analog - the LFOs on this synth are really crazy and you can get some very spacey sounds, as well as aggressive and bass-heavy low end.

Cosmetically, it is in decent shape, the front panel has some slight rusting from age, but it is in very good working order! I had the synth serviced recently, and had MIDI added, which really takes it to a whole new level. Everything functions as it should, including the poly section. It comes with a case enclosure as well (not in picture).

More info:

'This is not a synthesizer for boring italo basslines, funky leadlines and commonplace pop music melodies. This thing is instant cosmic space travel... Its big, unstable, adventerous, bleepy, moist, crackling, cloudy, hoarse, droney' - Legowelt"

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Vintage 1978 Crumar DS 2 SN 47

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"1978 Crumar DS 2 synthesizer - Number 47 of under 700 made in Italy. Rare. Seems to work fine but I am not familiar with this instrument. Missing one slider knob. As is.
The DS-2 is basically a monosynth with an added 44-voice polyphonic strings section. The DS-2 was one of the first synthesizers to use DCOs (digitally controlled osc.) making it stable in tune but maybe not as fat as VCO synthesizers. That isn't to say it can't sound fat...it can. Especially if you use the polyphonic string section and apply some slow LFO modulation to the pitch. This is a very big and good looking synth with a lot of knobs for instant hands-on control. And you don't need a hardcase, it's built into one. Just lift the cover and there it is (smart!)."

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Rare (Working) Crumar DS-2 Analog Synth (Italian 70s Synth) SN 551

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"The Crumar DS-2 (as in “digital synthesizer # 2”) is an Italian analog/digital hybrid synth built in the late 1970s. A few sources and synth blogs give 1977/78 as the starting year of production. Only a few hundred (some sources say around 700) were made; this one has a serial number of 551.

The takeaway = this is a rare, fat-sounding, heavy-ass 1970s synth that features two LFOs with really unique shapes, two digitally controlled oscillators (hence the “D” in DS-2), a poly section, pink and white noise…all of this, packed in a road case. The DS-2 is a classic-sounding beast, and one of the few synths that has a poly section you can play alongside a 2 oscillator mono section. The architecture of this synth draws comparisons to Moogs and Arps, but it's honestly more quirky (and therefore perhaps more limited in its scope, but also more unique)."

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Vintage Crumar DS 2 Synth Synthesizer SN 464

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Vintage Crumar DS-2 Synthesizer

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Synthesiser von Gestern Volumes 1 - 3

Synthesiser von Gestern Volume 1
Published on Feb 22, 2015 baward

"From the 1990 CD, ‘Synthesiser von Gestern' ('Synthesisers of Yesterday’) or 'Vintage Synths Volume 1’"

Playlist:
SVG1 1/22 Arp Odyssey
SVG1 2/22 Yamaha CS-60 part 1
SVG1 3/22 Oberheim SEM
SVG1 4/22 Korg Mono/Poly
SVG1 5/22 Minimoog
SVG1 6/22 Memorymoog
SVG1 7/22 Roland Jupiter 8
SVG1 8/22 Yamaha CS-60 part 2
SVG1 09/22 Sequential Circuits Pro One
SVG1 10/22 Korg PS-3100
SVG1 11/22 Roland SH-5
SVG1 12/22 Rhodes Chroma part 1
SVG1 13/22 Korg Poly 800
SVG1 14/22 Roland System 100
SVG1 15/22 Roland Juno 60
SVG1 16/22 Mellotron
SVG1 17/22 EMS Synthi A
SVG1 18/22 Rhodes Chroma part 2
SVG1 19/22 PPG Wave 2 2
SVG1 20/22 Yamaha CS 15
SVG1 21/22 Korg MS-20
SVG1 22/22 Moog System 55

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Crumar DS-2 glide mod, tech overview and WAVEFORMS.

Published on Feb 17, 2015 sounddoctorin

"Bob Weigel of http://www.sounddoctorin.com does a more recent review of the Crumar DS-2 synthesizer and shows the waveforms being generated by the DCO's and poly section before the VCF. If there is call I'll try to do the rigorous circuit run through video. I've just been too busy...look for upcoming products for modular users :-). Give me a month or so."

LEGOWELT Studiostuff Crumar DS-2 Synthesizer

Published on Jan 2, 2015 Farsetto Nero

"This is not a synthesizer for boring italo basslines, funky leadlines and commonplace pop music melodies. This thing is instant cosmic space travel... Its big, unstable, adventerous, bleepy, moist, crackling, cloudy, hoarse, droney"

Happy New Year From MATRIXSYNTH! - A Look Back at 2014

Happy New Year everyone!

I want to start by thanking everyone that comes to MATRIXSYNTH and helps make it what it is - the readers, the supporters, and of course all the sponsors on the right.

THANK YOU and have a GREAT 2015!!!

This site is a labor of love and a ton of work. This site is ultimately meant to be an testament to everything synth in the making. We have over nine years of daily synth history captured here, 119,983 published posts. I can't wait to see what the future brings us in 2015!

That said, here are a few interesting bits from 2014 in the longest post of the year. ;)

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Crumar Vintage DS-2 Digital Synthesizer SN 00137

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Pics of the inside below.

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Crumar DS-2

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via the seller: "CRUMAR DS-2 synthesizer in super cool army style footlocker style road case with CRUMAR logos on it. (Let me start by saying that I am a guitar player and don't know a ton about synths so feel free to correct my terminology if I get some things wrong.) This is a vintage synthesizer from Italy. It powers up and all the keys produce notes, it seemed in tune with itself when chords were played. There is a pitch control near the pitch slider thingy that change the pitch when moved, I would guess that the pitch wheel could dial it in to a modern tuner, or wherever else you wanted to go. There is a multi position octave selector switch near the bender bar that changes the overall octave of the synth up and down.

I messed around with this thing for about half an hour, and the knobs & sliders seemed to work, with one notable exception* - rates and octaves change, timbres change, the sounds can be modified.* The one thing I couldn't get to work was the little pitch bender bar. It may work, and I didn't have it engaged? This thing has so many controls that I wasn't sure what I was doing. There may have been other things that don't work, but it seemed like most of the controls were functional. The only thing I noticed that was definitely missing was the top slider for OSC. 1 on the left hand side of the keyboard. You can see this section in one of the pictures. The controls seemed pretty clean, not super scratchy.

Cosmetically this thing is in pretty good shape. The case seems to have kept it pretty nice over the years. Some old tape here and there, normal wear from use you'd see on a vintage instrument, but nothing serious. The case has some nicks and scrapes but it is solid as well. Will need a new handle. Pictures should tell the story, condition wise. "

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Vintage Crumar DS-2 Synthesizer SN 346

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"The ds2 is a very rare ( 500 made ) crumar synth which has digital ( , fat . raspy saw , pure square and lovely sine thats unlike any analogue i heard ) analogue filters , 2 x lfo , weird lfo shapes and to top it off a 44 key string synth section ( which works at the same time as the main osc's for sublime chord tuned keys.)

Creatively this machine is freaks synth or one for retro heads , the 2 lfo's and mod matrix make this not unlike the sequential pro 1 at times but way more complex ( it has ladder / staircase and s/h random lfos' which take you straight into star trek / bbc radiophonic territory)The machines string section makes super cheesy and cool 60's and 70's pad sounds and just plain psychedelic wavering timbres very similiar to the boards of canada stuff , you know those detuned and weavy psychedelic tones.The machine also excels at leads from thin and tonal to fat and pwm ones and as it has 2 main osc's it can play chord leads that go from classic rave tones to crazy jazz tones , it can emulate a moog lead with ease , really its very moogish.The machine also reminds me alot of the Oxford oscar , it has a very very similiar tone to the oscar at times , a rough and ready filter and a resonance that sqwarks like a banshee , it self resonates and the filter will then act as a osc and track perfectly.I should also mention the lush pink and white noise section ( which again just adds to this machine )The machine i feel outdoes many analogues , its osc's are really mean and fat , they dont sound digital ! but do at times have a slight plastic tone which is what makes the machine sound so cool and psychedelic." Hard shelled case included. I stated earlier just 2 little missing slide covers for the Lfo's. Super easy to replace. Thank you and enjoy G.S.112"

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CRUMAR DS-2 Digital Analog Synth

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Note the label on the DS-2 states "Digital Synthesizer".  The oscillators are digitally controlled (DCOs).  

"1 OWNER / SUPER RARE SYNTH
EXCELLENT WORKING ORDER
FULLY FUNCTIONAL - recently restored
TWO OSC - monophonic
TWO LFO's
POLYPHONIC with two filter sections
Pink and White Noise
Original Manuals Included


This was owned by 1 person and has been stored away for many years. Recently has been brought back to life from a professional tech. This CRUMAR DS-2 is both monophonic and polyphonic.
It has MASSIVE sound. I've owned many analog synths, MS-20, Octave Cat, Prophet 5 and I have to say nothing compares to this Crumar sound.
It has a very unique sound and it can get very dirty and big. It's awesome at creating phsycodelic errie type sounds. Has many routings and interestingly two flo's. Polyphonic section has Lo-pass and Hi-pass filter. Both Monophonic and Polyphonic section can play at the same time..."

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