“This example is in perfect working order and is in lovely condition. It comes with the original user manual and even has its original box (this is a bit tatty and has some packing tape on it but i will cover the box with Kraft paper to preserve its integrity). The polystyrene packing pieces are long gone i’m afraid but i will protect the MS-03 with bubble wrap.” Link
“For sale is a Korg Ms-03 signal processor. Rare and hard to find. A great addition to your Korg Ms-10 Ms-20 Ms-50 series synths. Also can work great with other synthesizers not from the Korg Ms family. This MS-03 works great and is in excellent shape” Link
“Tested and works and this has virtually no scratches, has been in closet for many years. ” Link
“KORG MS-03 MS 03 Vintage Signal Processor Signal to CV Converter für MS-10,MS-20
Sie bieten auf einen Korg MS-03 vintage Signal Processor. Es handelt sich um den Audio zu CV Konverter des MS-20 (der für einen Grossteil der legendären Sounds dieses Gerätes verantwortlich ist) in einen eigenen Gehäuse. Mit anderen Worten: mit dem MS-03 kann man einen preiswerten MS-10 zu einem Audio-Wolf im Schafspelz aufpimpen 
Topzustand, fast im Sammelzustand, wäre nicht eine kleine Macke über dem “Width” Poti (mit Lackstift behandelt, daher kaum zu sehen). Technisch einwandfrei. Lieferung inklusive Original Bedienungsanleitung aus dem Jahr 1978!
Aufgrund neuer EU-Bestimmungen erfolgt folgender Hinweis:
Der Artikel wird von PRIVAT verkauft, dies bedeutet: mit der Abgabe eines Gebotes erklären Sie sich ausdrücklich damit einverstanden, auf die Ihnen gesetzlich zustehende Garantie bzw. Gewährleistung bei Gebrauchtwaren zu verzichten. Bieten Sie nicht, wenn sie mit diesen Regeln nicht einverstanden sind.” Link
“This listing is for a Korg MS-03 vintage signal processor signal to CV converter. The unit is 100% functional and in nice cosmetic condition as well.” Link
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It is in great condition, albeit a little dusty. The knobs feel great, the power switch feels strong, and the cable is free of any damages. There are very few scratches on the body of this device (mostly along the edges). Other than that, it is in great cosmetic condition for it’s age. I cannot test this since I don’t have the proper things to test it with, however I did plug it in and turn it on. The main power, Peak, and Trig Out lights light up perfectly.” Link
“Korg MS-03 vintage pitch to voltage converter interface. This unit produces VCO CV (control voltage) signals and trigger (gate) signals so that you can use an electric guitar, microphone, or other transducer output (from an acoustic instrument, for example) to “play” a synthesizer. A variety of remote control input jacks let you use foot switches for more freedom and flexibility during live performance. With this amazing unit you can instantly put together your own guitar synthesizer, vocal synthesizer, etc., by simple connection with any synthesizer equipped with VCO CV IN and TRIGGER (Gate) IN input jacks.
The unit is fully functional and in great cosmetic shape.” Link
“rare Korg M-03 signal processor,
Allows the user to convert a monophonic audio signal to linear or exponential gates and voltage to control analog synth like korg, roland, moog, sequential circuits, arp… CV gate and Trig Hz/volt !!!
portamento etc…
220 vlt
Item in good condition, checked with a saxophone on MS-10 and roland System 100, works great, minor scratchs but the overall looking state is really ok !” Link
“Up for auction is a Korg MS-03 signal processor in extremely good condition. Was acquired with various other equipment in an estate sale. Although I have no idea how to use it (the reason I’m selling it), I was assured that it functions perfectly. The only cosmetic flaw whatsoever is the scratch on top (in picture) that I actually put there myself when I was bringing it home in a box with some cables and other items. I’m going to assume that if you are looking at this item you already know what it is, so I don’t feel a need to look up the specs.” Link
“In good cosmetic condition and working 100%.
Its the 240V version for Australia,UK,Europe” Link
“I went a little overboard and got caught up in a bidding war over this item last week and unfortunately the Korg MS-10 I was supposed to get to use this with got sold to someone else so I’m letting it go as I spent too much money on the item.
I don’t have any synths to test this with but my brother brought it into a music store where he works and plugged the Envelope Follower output into an envelope filter effect they had for sale and he said that worked great. They didn’t have any other gear to test this with so I have no way of knowing what else works on this. The peak lights light up with signals and I’m assuming since the Envelope Follower works that the unit is in good working order but without any gear to test this on I’m selling as is with the guarantee that the Envelope Follower works and the LED lights up, wish I had an MS-10 to play around with but I don’t have the money to buy one on ebay and the local deal I thought I had fell through when someone else offered more money.
I won’t go into details on this item, if you found it you obviously know what you are looking for!
Analog pitch to voltage converter. Outputs Hz/Volt, V/Oct CV signals for pitch tracking, Envelope follower and two different types of trigger outputs as well as various inputs and a direct output” Link
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It is in great condition, albeit a little dusty. The knobs feel great, the power switch feels strong, and the cable is free of any damages. There are very few scratches on the body of this device (mostly along the edges). Other than that, it is in great cosmetic condition for it’s age. I cannot test this since I don’t have the proper things to test it with, however I did plug it in and turn it on. The main power, Peak, and Trig Out lights light up perfectly” Link
“Up for sale, Korg MS-03 signal processor. This is a very rare little box that converts any audio signal into CV and gate to control any analog synthesizer that has CV, or HZ/v controls. Use your drum machine to make cool basslines, or your guitar to play analog synths.
More about the features and also user manual can be found here: http://www.korganalogue.net/korgms/manuals/pp/0301.html
The box is in good condition, tested and 100% functional. Used in my smokefree home studio. It is rated for 100volt and you may need a transformer depending on your country.” Link
“Rare Korg MS-03 Signal Processor unit.This piece has been in storage for last twenty years. I purchased this unit used from an area music store in 1990 and used it for a short time with my Arp 2600. This unit worked perfectly when I put it in storage and still powers up now although I have no way to test it further! This is a perfect companion to the Korg MS-20 Analog Synth!” Link
“Korg MS03 signal processor
This signal processor converts any audio signal input into a synthesizer control signal
Works for voice guitar drums samples anything. Acts as a trigger for your synth
classic kit , livery is part of the MS familiy ie MS20
Will look great beside your MS10 or 20
Please note this is a 110volt piece of kit and therefore will need a 110v to 240 v transformer to use in the UK” Link
“This is a Vintage KORG MS-03 Signal Processor Synthesizer, Works fine to control Synth signal. I will email a pdf of the manual to the winner.” Link
“Works fine to control my modular synth from a basic tone signal. Comes in original box and has original manual (in japanese).” Link
“Korg MS-03
Part of the MS series that includes the MS-10 , MS-20 and MS-50 synths this is a pitch to control voltage interface for use with analogue monosynths, so you can play your synth with a bass, guitar or microphone… you can sing into it! Its a fun unit. Can hook up to 1V/octave and Hz/Volt so should work with just about all mono synths with cv inputs.
Look at the original manual here http://www.korganalogue.net/korgms/manuals/pp/0301.html
You can set the level of the incoming signal, add portamento and offset the CV, and there are sockets for the following :-
In
Instrument in
Portamento pedal
CV hold pedal
CV/Trig hold
Trig cancel
Out
CV – 1V/Octave
CV – Hx/Volt
Trig – Positive
Trig – Negative
Envelope Follower
Direct out
Fully working and serviced by Jim at http://www.singingcatservices.co.uk (ex Moog technician and thoroughly nice person). There are a few scratches on the face plate but nothing major.” Link
“What we have here is a Korg MS-03 Signal Processor. This signal processor converts any audio signal input into a synthesizer control signal. Put together a guitar or vocal synthesizer instantly by connecting the Ms-03 between your guitar or mike and any synthesizer with CV and trigger inputs. No alterations are needed; just by plugging into the MS-03 and adjusting the controls, your instrument can actually ‘play’ the synthesizer. This unit produces VCO CV (control voltage) signals and trigger (gate) signals so that you can use an electric guitar, microphone, or other transducer output (from an acoustic instrument, for example) to “play” a synthesizer. A variety of remote control input jacks let you use foot switches for more freedom and flexibility during live performance. With this amazing unit you can instantly put together your own guitar synthesizer, vocal synthesizer, etc., by simple connection with any synthesizer equipped with VCO CV IN and TRIGGER (Gate) IN input jacks. This unit is in full working condition. Cosmetically there are some scratches and a couple of small dents(see pics).” Link
“I am selling this RARE piece of my collection. I use it to trigger synth with any signal (ex. Vocals, guitars, bass, etc). Its magnificent!!! Enjoy” Link
“I am selling these two pieces together because i always used them together. The MS 50 has midi and power chord mod. Both work and are in excellent conditions, given their age all sales are final. I am selling a chunk of my collection, check out my other auctions.” Link
“Item in good condition.(see pics)
working 100%.
And sounds GREAT !!!
The MS-03 is a rare little box.
It is a Pitch to CV converter and an Envelope Follower. ” Link
“KORG MS-03 SIGNAL PROCESSOR modular synth tool
additional unit made to expand the Korg modular synth range…
original vintage stand-alone unit to process audio to gate + cv signals !
220 Volt version, perfect working condition, little marks and scratches – see foto” Link
“You are bidding on a Korg MS-03 Signal Processor This is a used Korg MS-03 Signal Processor. It does have some scratches on it. It is working good. The serial on it is 181165.” Link 
