Korg, Sigma @ 16 February 2019, Comments Off on Korg Sigma

“Good conditions” Click here to visit listing on eBay

Korg, Sigma @ 12 May 2018, Comments Off on Korg Sigma

“Up for sale we are offering this used Korg Sigma synth. These were made in the late 70’s to early 80’s. This one is in incredible condition and will include the original manual and cover!” Click here to visit listing on eBay

Korg, Sigma @ 17 March 2018, Comments Off on Korg Sigma

“A very special analog monophonic synth from 1979. There were only a 1000 of these units made ever. It is said to be Aphex Twin’s favorite synth. It is rare to find one in such a great condition as the one I’m selling.”
Click here to visit listing on eBay

Korg, Sigma @ 23 September 2017, Comments Off on Korg Sigma

“This example has been tested and works, but needs a service, I have included a service manual with it.

It is missing the tops of the joysticks and has a few scuffs on the wooden sides ( see pictures ) Keyboard is Sold as seen, no returns excepted. ” Click here to visit listing on eBay

Korg, Sigma @ 29 October 2016, Comments Off on Korg Sigma

Potis kratzen zum Teil, E2 Taste hat krack, ist aber stabil
alles funktioniert, FETTER ANALOG SOUND” Click here to visit listing on eBay

Korg, Sigma @ 23 July 2016, Comments Off on Korg Sigma

korg sigma “Get a great deal on a RARE vintage Korg Synthesizer in perfect working order. I have had this synthesizer for the last 25 years and enjoyed it immensely – too many keyboards and so this one needs to go. Many of the SIGMA’s tones imply Styx’s “Grand Illusion” or Moody Blues’ “Long Distance Voyager” and other late ‘70s early ’80 synth tones. The synth is in perfect working order with all the parts intact. Being vintage, it does have bumps and scratches – I’ve tried to show the condition in the photos. All the voices work and the joysticks (which are often lost) are the originals.” Click here to visit listing on eBay

Korg, Sigma @ 07 November 2015, Comments Off on Korg Sigma

korg sigma “Super rare Korg Sigma analog Synth. This synth is in great shape, the only major problem is the tops of the two joysticks are broken off but they still function like normal. The sound of this can be very expressive due to its non typical layout. This keyboard was intended to be played as a lead synth and has a brute force way of shaping timbre that will cut through any mix. The sound is monophonic but big and if you are looking for a lead instrument that will go into some strange exotic places this thing is for you. The aftertouch is controlled by a tiny light sensor under the keyboard and can be programmed to bend notes or add vibrato. Also the quarter tone button on this synth is unique if you need to play exotic scales from a far away place. Its made of solid metal and wood and has a cool music stand that pops up on the back, This is surely a collectors item and only 1000 were ever made. Good luck!” Click here to visit listing on eBay

Korg, Sigma @ 28 February 2015, Comments Off on Korg Sigma

sigma “Up for auction here is a Korg Sigma (KP-30) in excellent condition. This thing sounds and plays great! It has after touch and a whole host of features. You can combine the preset instrument sounds with the Synthe sounds to really fatten up your mix. It has both the joysticks (rare to find on this model) and a multitude of selections. The only reason I’m selling this is I purchased some other gear and I need the space. Only thing worth mention is that two of the tabs in the Instrument section have been replaced and they say “Brass” and “Organ” these are not the original tabs. It was this way when I had purchased it. There is a small scratch on the front face of the unit too but not unsightly.” Click here to visit listing on eBay

Korg, Sigma @ 18 October 2014, Comments Off on Korg Sigma

sigma “discuss

Users manual included on cd in pdf format

Unit was opened and modified with plastic electrical connectors so it can be separated into two pieces as seen in picture. This allows ease for service or repair

Keyboard assembly was removed and each key contact was cleaned. The keyboard is responsive and the after touch feature unique for this instrument is fully functional.

One knob and both joystick caps were replaced with wood versions, see pics.

The Sigma is known for breaking joysticks and the wood replacement are very similar in size and feel.” Click here to visit listing on eBay

Korg, Sigma @ 23 August 2014, Comments Off on Korg Sigma

sigma “Up for sale is rare Korg SIGMA KP-30 Vintage Analog Synthesizer. There were only 1,000 of these made in 1979, with each units having its serial number plate on the front panel. This one has a very low serial # 0027.

As I tested the unit, the “SYNTHE” section worked fine with all the keys and switches and knobs working well to the best of my knowledge, however all the preset sounds in “INSTRUMENT” section don’t seem to produce any sound somehow.

So I’m selling this AS IS for you to use with some servicing done, or if you just want to use with the Synth section. ” Click here to visit listing on eBay

Korg, Sigma @ 26 July 2014, Comments Off on Korg Sigma

“The vintage analog synthesizer Korg Sigma is for sale. Recently revised and tested. The balance potentiometer was replaced.
Good working condition, very interesting instrument, very analog sounding.
The front panel and the wood sides have small paint marks, please check the pictures. I haven’t investigated chemical procedures of removing the spots, I’ve used the synth as is, didn’t bothered me, I’m interested in sound, and this synth has awesome sound.
Please note also that the right joystick cap is missing. The joystick is working without problems.” Click here to visit listing on eBay

Korg, Sigma @ 07 June 2014, Comments Off on Korg Sigma

“The joysticks are missing but the joystick controller is fully operational, the portamento button is also missing but there is another portamento switch on the main control panel. The wood is ok, not so damaged from others that i’ve seen so far. And the clarinet instrument it works sometimes. Keep in mind that it’s a 1979 instrument and only God knows it’s history” Click here to visit listing on eBay

Korg, Sigma @ 01 March 2014, Comments Off on Korg Sigma

” You are bidding on the wonderful Korg Sigma., Korgs totally bonkers Bi-timbral synth.
Completely analogue, with an incredible low pass filter, ring mod,great control via the twin joysticks, assignable aftertouch and micro tuning!
It also sports a rather generous amount of inputs and outputs.
This one is in great condition. The finish is a bit scuffed in places, as can be seen in the pics, but nothing too bad and operationally/sonically it is fine.
The Joystick knobs are missing, and that’s the only thing to report. Below are some great reviews/guides to this awesome synth.” Click here to visit listing on eBay

Korg, Sigma @ 09 November 2013, Comments Off on Korg Sigma

“This Korg Sigma is in excellent condition, missing only the top of the right hand joystick but you can still operate it. Two oscillators, 8 preset sounds on the first oscillator, 11 preset sounds on the second oscillator plus a crazy ring modulator. Lots of variable controls, great performance synth.” Click here to visit listing on eBay

Korg, Sigma @ 26 October 2013, Comments Off on Korg Sigma

“The korg sigma is an interesting bi-timbric synthesizer consisting of two sections: a genuine analog “Synthe” and a Preset “Instrument” section. All together, there are 19 presets on it that give a variety of sounds. There are 11 presets for the “Instrument” section which include fuzz guitar, electric bass, clavi, string, flute, double reed, trumpet, hammered percussion, etc. And there are 8 presets for the “Synthe” section that give variable waveforms (square, pulse, sawtooth) in different pitch ranges (from 32′ to 4′). Each preset has its own rotary control to vary its sounds. The Sigma is also unique for its ability to combine the synth and instrument sections for a nicer, layered synth sound or effect. While the synth section is nice, the instrumental sounds (tuba, trumpet, strings, guitar, etc.) are pretty darn bad, and only get interesting when mixed with the “Synthe” section sounds.

Cool joysticks add multi-dimensional control. Use one to control pitch, noise and vibrato and use the second joystick to edit the low-pass and hi-pass voltage controlled filters! There is also an “Effect” section which is for Vibrato, Portamento, Sample and Hold, Noise, Key Hold, Multiple Trigger and Ring Modulator (each with it’s own rotary control to vary it’s sound). Even though it has a switch labelled “Ring Mod,” it’s actually a cross-mod. It lets you cross modulate between the instrument and Synth sections. ” Click here to visit listing on eBay

Korg, Sigma @ 19 October 2013, Comments Off on Korg Sigma

“You are bidding on an Analogue Monophonic Synth, launched in 1979, described by Sound on Sound as having “schitzophrenic charm”. There is no memory. It is part true synth, part preset with loads of knobs and levers to be expressive on the left hand.

The condition is impressively good for its age. It switches on and there are some sounds that come out that sound like what they are meant to. All of the switches work and none are broken. However I do think that it would benefit from an expert inspection to get the best from it.” Click here to visit listing on eBay

Korg, Sigma @ 31 August 2013, Comments Off on Korg Sigma

“This listing is for 1 x Korg Σ Sigma Analogue Synthesizer from 1979 (actual item in images).

The unit functions as it should and is in excellent condition (please see images). There are no crackly pots or switches. There are only a couple of small marks on the unit and nothing that affects playability.

In the auction photographs you will see that the Sigma is powered up. ” Click here to visit listing on eBay

Korg, Sigma @ 03 August 2013, Comments Off on Korg Sigma

“This synth is in perfect working condition. We have played shows with it in the past but have not used it lately and don’t need it for our current project so we’re selling it off. Everything works, the only cosmetic problem is the side on the left of the synth is loose, easy fix if you have the means to do so, and of course some bumps and bruises and dustyness. All of the connectors have been cleaned and it will include power cables. ” Click here to visit listing on eBay

Korg, Sigma @ 02 March 2013, Comments Off on Korg Sigma

“Up for sale is one beautiful near mint KORG SIGMA. Probably the best you can get.
This one is 100% fuctional.
Cosmeticaly it is in excellent condition, just some very very light sign of use on the wooden sides pictured in my pictures.” Click here to visit listing on eBay

Korg, Sigma @ 06 October 2012, Comments Off on Korg Sigma

“Biete einen sehr gepflegten Korg Sigma an.
Im Web findet Ihr viele weitere Informationen zu dem Gerät.

Das Gerät ist ein Teil meiner Sammlung und gehört mir seit ca. 7 Jahren.
Es wurde bis jetzt von mir nur in meinem Homestudio eingesetzt.
Nun löse ich einen Teil meiner Sammlung auf :-(.

Einige kl. altersbedingte Gebrauchsspuren sind vorhanden.
Jeder Regler, alle Tasten und Joysticks funktionieren einwandfrei.

Zum Gerät gibt es noch ein Transportcase (Marke Eigenbau) dazu, damit Sie das Gerät sicher transportieren können.

Wenn gewünscht, kann ich das Gerät auch versenden (Kosten trägt der Käufer). Ich müsste die Kosten noch erfragen,
da das Holzcase ein entsprechendes Gewicht hat.

Ihr Gebot ist verbindlich. Bitte alle Fragen im Vorfeld stellen.
Bei Interesse ist selbstverständlich ein Test vorher möglich.

Gewährleistung oder Garantie ist hiermit ausdrücklich ausgeschlossen.
Der Käufer erklärt sich mit dieser Bedingung bei einem Gebot einverstanden.” Click here to visit listing on eBay

Korg, Sigma @ 15 September 2012, Comments Off on Korg Sigma

“Zum Vekauf steht ein Korg Sigma Synthesizer.

Der Sigma ist ein sehr eigenwilliger Synthesizer der mit interessanten analog Sounds aufwarten kann.” Click here to visit listing on eBay

Korg, Sigma @ 08 September 2012, Comments Off on Korg Sigma

“The rare korg sigma here, it does work but I’m listing it as a fixer upper though there isn’t anything wrong with it that can’t be easily fixed so please read the whole description. The Joystick tip broke off which I still have and could be glued or screwed maybe back on, the joystick base still works fine. There are two missing tabs which makes those waveforms stay on but it’s easy to turn them off you just need to wedge something in between the contact. The 8′ saw wave tab doesn’t seem to work, I don’t know if it’s a bad connection or what. That is pretty much all that’s wrong with it, nothing that couldn’t be fixed easily. Assume there are a couple scratchy knobs and this is 30+ years old. It sound amazing and is basically stereo because there are two synth engines and have separate outputs so you can do panning. The Aftertouch is awesome and the low-hipass joystick is a joy to play (before my housemate broke the tip off). The tracking and tuning is very solid! And can be sequenced and controlled nicely with korg’s hz/trig from a midi cc converter. I have been selling for years, many high end synths and I’ve never had a negative feedback and always accurately describe my gear. Please understand that you are getting an old project synthesizer that needs a little tlc. ” Click here to visit listing on eBay

Korg, Sigma @ 25 August 2012, Comments Off on Korg Sigma

“Here we have a rare classic analogue Korg Sigma mono synth with a midi retrofit which I’ve had in storage for some time. I’m selling it primarily to make room, but being auld, bald n ugly doesn’t help either, no budding popstar here. It’s a really good performance synth sounding similar to Vangelis or Jarre genre with some great n quirky features. You can mix & tweak all the sounds giving incredible sound diversity plus a plethora of expression using the performance controls n joysticks. It has your classic late 70’s sound and powerful analogue filters which can be stunning when put through some effects. It has 2VCO’s and 3 sections, SYNTHE / INSTRUMENT / EFFECTS (all mixable). Its also got the following although not implemented as standard synths. Random and noise generation, PWM, vibrato, ring modulation, some VCF, LPF, HPF control etc etc etc. Put it this way you’ll never run out of possibilities. The bad new is, as with most synths of this era it’s got its faults but these are minor. Anyhow here’s a list of known problems:

1. One of the keys has been cracked (pic3) but doesn’t detract from playing.

2. Both joystick stalks have been broken (a common fault) but replaced years back (pic2) with bespoke plastic ones. These still work and look great.

3. Pots on the performance section (pic2) need either cleaned ot replaced, Yes they crackle when turned but that’s easily sorted perhaps with a bit of contact cleaner and the 2 switches (not the rocker types as these are fine) are a bit hard to move, probably worn out with over 30 years of use. This has to be expected though so please keep that in mind. I would say a simple service will cure all its ailments but I’ll leave that to you.

However, there’s lots of good news. It’s cosmetically in very very good condition, fully intact with some minor small scratches and still has its pull out music rest . I played it before advertising and it sounds fine. But best of all it has a MIDI retrofit installed (many years ago). This has pretty basic midi implimentation whereby you press a little button on the fascia and the channels go through 1-16. I have no way of testing it but know it worked because I used it in midi setup (many moons ago). It also has midi independent tuning, again by a little pot just under the fascia (access hole). You can see them on pic2 just below the gold legend. There’s no midi sysex here mind you, just note on/off data accepted. It also has your usual Hz / Volts connectors so midi converters could be used although I’ve never tried.” Click here to visit listing on eBay

Korg, Sigma @ 28 April 2012, Comments Off on Korg Sigma

“Offered is the Korg Sigma. The Sigma is in excellent cosmetical condition. It has some minimal wear on the wooden side panels and some minor user marks, but overall this Sigma is in almost mint condition.

Like all analogue synths I offer for sale the Sigma was professionally serviced by Marc Marc Electronics. He checked, cleaned, treated the in-outputs and all other functions for better contact and functionality. The two voices are calibrated, a recap of the power supply is done, and all other electrolytic condensators are replaced by new ones. For more info on the service check the certificate next to the pictures!!” Auction ended. Click here to browse on eBay.

Korg, Sigma @ 07 January 2012, Comments Off on Korg Sigma Project Machine

“Up for auction Korg Sigma Synthesiser for spares or repair

As you can see from the photos the middle and RH rockers have been damaged with 2 of the waveform rocker covers missing

AS A GUIDE ONLY the synth powers up and everything works apart from the 2 banks of damaged rockers

These synths are very rare now in the UK and good examples are fetching £1000 +

If you already have one this would be ideal to put aside for spares

ONCE AGAIN SOLD FOR SPARES OR REPAIRS NO WARRANTY SOLD AS SEEN” Auction ended. Click here to browse on eBay.

Korg, Sigma @ 03 September 2011, Comments Off on Korg Sigma

“Zum Verkauf steht hier ein gut erhaltener, funktionstüchtiger Korg Sigma, ein monophoner Analog-Synthesizer und dazu eine echte Seltenheit. Gebaut wurde er Ende der 70er Jahre in einer sehr geringen Stückzahl. Sein Klang ist hervorragend, nachzuhören unter anderem auch in einigen youtube-Videos. Ich habe über Ableton live einige Aufnahmen damit gemacht und bin sehr beeindruckt, tendiere aber trotzdem und trotz des nicht abzustreitenden Kultcharakters des Korg zu etwas Schlankerem, bin da aber noch nicht entschieden.
Er ist in einem äußerst gepflegten Zustand, lediglich die eine Holzwange ist an einer Stelle etwas abgestoßen, ansonsten sieht er tadellos aus, insbesondere in Bezug auf sein Alter. Soweit ich feststellen konnte, sind alle Funktionen intakt, nichts kratzt oder knarzt. ” Auction ended. Click here to browse on eBay.

Korg, Sigma @ 25 June 2011, Comments Off on Korg Sigma

“Vintage 1979 Korg analogue synth, one of 1,000 made and surely amongst the finest remaining.

Serial no: 241784

In original box with original Korg packaging and baize keyboard cover from the suppliers, Rushworth & Dreaper Ltd of Liverpool.

Superb original condition: very few signs of use, everything tested, complete and fully functional.

One light scratch by left-hand joystick (see photo).” Auction ended. Click here to browse on eBay.

Korg, Sigma @ 21 May 2011, Comments Off on Korg Sigma

“This has been in storage in my possession since the late 80’s and will be shipped in the original box. (the outer box is rather dirty and musty but the inner box is fine… sorry, no manual) The only damage I find is to the left wooden side panel. It is on there but looks like it was screwed on from the inside of the unit and the screws were over tightened and pulled through .. Other than that, cosmetically it is in very good shape. Came from a music store liquidation auction and really appears to look almost new if not for the side. I plugged it in and it seems to work fine, the “joysticks” work, the different sounds worked” Auction ended. Click here to browse on eBay.

Korg, Sigma @ 30 April 2011, Comments Off on Korg Sigma

“Pre-set synth by Korg circa 1970s. 11 “instrument” presets and 8 “synthe” tab presets. Plenty of info available on the www. Mono out together with various input and output jacks on the back for VCO, envelope and filter. The names of the instrument voices only are suggestive of real instruments, however one can obtain interesting and unusual sounds by mixing them together. The joysticks are particularly effective, you can control both simultaneously with your thumb and little finger on your left hand, e.g. the pitch bend for an instrument voice and the filter frequency for a synthe voice. This creates some pretty psychedelic effects. The sample and hold on the synthe section sounds particularly effective. The filter on the synthe section also sounds particularly effective, supposedly it is based on the MS-20. Here are some caveats for this particular instrument: the “trumpet” instrument voice and the “hammered percussion” instrument voice do not appear to work. The “mix” dial between the instrument and synthe voices is slightly scratchy. The two joysticks do not have knobs on the top. I cannot discern the functions of the “quarter tone,” “multiple trigger” or “keyboard sensor” tabs on the FX bank; they may work in connection with the jacks on the back, or not work. The light above the “quarter tone” effect control is pushed in. One of the rubber hole-stopper inserts is missing on the back top. There are light scratches to top bottom front back sides as depicted. This may originally have come with a “music stand” attachment; if so, it’s not included. There is a slight discoloration on the 3rd “C” key. I have checked out this synth carefully and those are all of the issues I can find, I may have over-described some of them out of an abundance of caution and there is a possibility there are other minor issues I have not been able to identify. So, sold as is” Auction ended. Click here to browse on eBay.

Korg, Sigma @ 29 January 2011, Comments Off on Korg Sigma

ich biete hier einen sehr seltenen Korg Sigma an. Es handelt sich dabei um einen Preset Synthesizer, der sich gewaltig von den Mitbewerbern Roland SH 2000, Moog Minitmoog etc unterscheidet: Jedes Preset lässt sich individuell in einem bestimmten Parameter verändern, ALLE Presets lassen sich gleichzeitig spielen. Dadurch sind gewaltige Klänge möglich, zumal sich die beiden Einzelsektionen Instrument/Synthe gegeneinander verstimmen lassen. Zudem bietet die Tastatur ein sehr schönes Aftertouch für Pitch Bend und Vibrato. Dieses Aftertouch arbeitet optoelektronisch und ist wartungsfrei, braucht jedoch etwas “Aufwärmzeit” (etwa 3-4 Minuten) und sollte – zumindest beim Vibrato – dann ein paarmal betätigt werden, damit es “rund läuft”. Die beiden Joy-Sticks erlauben Filtermorphs über LPF und HPF (nur Synthe-Sektion) und wunderbares Bending und Verändern der Modulationsintensität. Ein britischer Journalist beschrieb den Sigma mal als “das meist behütetste Geheimnis in Sachen Monophon-Synthesizer”. Matthias Becker attestiert ihm Möglichkeiten, wie man sie sonst nur von Modularsystemen kennt. In der Tat ist man mit wenigen Handgriffen bei sehr abgefahrenen Klängen angekommen. Die Architektur ist in wenigen Minuten durchschaut, Überraschungen bietet das Instrument noch nach vielen Tagen Arbeit. Die Qualität der Sounds hat einst gereicht, um Rick Wakeman dazu zu bringen, seine Minimoogs durch vier Korg Sigmas zu ersetzen” Auction ended. Click here to browse on eBay.

Korg, Sigma @ 15 January 2011, Comments Off on Korg Sigma

“Korg Sigma

Rare Analogue Synthesizer

… aus der Zeit von MS-20 usw.

Der Sigma klingt wunderbar voll und warm. ” Analoges Breitwand-Kino ” sag ich nur. Dank der vielen Oscillatoren die gleichzeitig aktiviert werden können , klingt er sogar fetter und breiter als ein MS-20. Dazu gibt es noch einen herrlichen Ringmodulator , Sample and Hold, Noise, usw. und natürlich das mit einem Joystick morphbare Low-Highpass Filter. Zwei getrennte Ausgänge , sowie CV-Gate Ein und Ausgänge Filter CV Eingang runden das Bild ab.

Der Sigma befindet sich in einem hervorragenden Zustand , technisch wie optisch ( siehe original Bilder ) und wird in diesem Zustand nur noch selten zu finden sein.

Abholung ist dei diesem Synth bevorzugt, Versand geht aber auch auf ausdrücklichen Wunsch und Risiko des Käufers.” Auction ended. Click here to browse on eBay.

Korg, Sigma @ 09 October 2010, Comments Off on Korg Sigma


Korg, Sigma @ 18 September 2010, Comments Off on Korg Sigma


Korg, Sigma @ 28 August 2010, Comments Off on Korg Sigma

“Sintetizzatore korg sigma, monofonico a tre ottave, due joestick con 4 assi, passa alto\passa basso, pitch bend, noise depth, vibrato depth, tasto “portamento” tra i due joestick. Selettore per i quarti di tono, key trigger, hold.

Tastiera con Aftertouch SELEZIONABILE!!!! FUNZIONANTE!!!

Una meraviglia con due motori di sintesi addizionabili [Sezione Sinthe\sezione preset] Joestick assegnabili alle due sezioni, Ring modulator. Con tasti stile Organo anni ’70 per accedere alle funzioni.

Privo di memoria interna per i suoni e di prese midi, sul retro solo i “CV gate”.

Fiancatine in legno, portaspartito estraibile in metallo intergrato.


Un Synth da “ASSOLO”!!! Con il classico e inconfondibile suono dalla pasta “Korg”. INIMITABILE!!! Non esiste soft sinth che tenga!!!

Buona asta!


Korg synth vintage analog sinthetizer, monofonic, 3 oct keyboard, joestick 4 axis LPF cut off frequency\HPF cut off frequency-Noise depth\Vibrato depth, Pitch Bend. Portamento button between the joestick, quarter tone button, key Trigger, hold.

Keyboad with AFTERTOUCH!!! 1979!!! Perfect Working!!!

Two synth section, Sinthe and Instrument addictionable, assegnable joestick at two section, ring modulator. With the draw bars organ button style for the function.

Without Memory for the sound and MIDI. Only the “CV Gate” on the rear panel.

Side wood, in the NEAR MINT CONDITION!!

Soloist Synth! With the inimitable Korg SOUND! Soft synth isn’t the same thing!!!” Auction ended. Click here to browse on eBay.