Elby Designs ED102 Octave Volts Hertz CV Processor

Note: Auction links are affiliate links for which the site may be compensated.
via this auction
Perfect Circuit Audio (RSS)

"The ED102 is ideal if you want to upgrade your synthesizer by adding on other synthesizer units having different kinds of keyboard control voltage and trigger signals.

The built-in, fully adjustable log amp, anti-log amp, and trigger processor ensure complete system flexibility and compatibility between any presently voltage controlled synthesizer. In order to get the most out of your ED102, please read this owner's manual carefully before use. The ED102 Hz/V/Oct Converter is designed for the purpose of connecting V/Octave synthesizers with Hz/V synthesizers. This sophisticated signal processor greatly enhances the performance possibilities of your synthesizer.

Among presently available music synthesizers, there are two different types of control system used for the VCO (voltage controlled oscillator) and EG (envelope generator). One of these systems is used by Korg and Yamaha; the other is employed by every other synthesizer manufacturer. The ED102 provides you with a way to change the control signals of one system into the control signals used in the other system. In this way, it acts as an interface so that any two synthesizers can be used together, provided that the synthesizers are equipped with the conventional input and output jacks for control
voltage and trigger or gate signals.

CV systems

In the Hz/V system, the VCO oscillator frequency is proportional to the control voltage whilst in the V/Octave systems the oscillator frequency changes one octave for every one volt (1V) change in the control voltage. Since an increase of one octave means that the frequency is doubled, each increase of one volt in the control voltage means a doubling of VCO frequency.

The problem with the V/Octave system is that it must employ a log amp in order to double the frequency for each one volt increase in the control voltage. Log amp circuitry can, unfortunately, be very unstable because of its sensitivity to temperature changes. This causes so many problems that most professional musicians automatically assume that synthesizers always have unstable pitch. When Korg developed their first Korg synthesizer, they decided that such a circuit was entirely unsuitable for a musical instrument. So, instead they invented their own unique, patented circuit in which the keyboard voltage (which is the VCO control voltage) itself doubles for each one octave increase in pitch.

Four Sections

Log Amp: This changes a Hz/V type keyboard CV (control voltage) output into a V/Octave type of CV. Use the Log Amp to change the control signal from a Hz/V synt
hesizer into a signal you can use with a V/OCT synthesizer.

Hz/V input (0 ~ 15V)
Oct/V Output (-12V ~ +12V)
Frequency knob: Bi-polar offset of frequency
Width knob: Bi-polar control of width of the output
Antilog Amp: This changes a V/Octave type of keyboard CV output in to a Hz/V type of CV. Use this Antilog Amp when you want to control a Hz/V synthesizer, such as a Korg, by means of a unit that uses the V/OCT system.

Oct/V input (-4V ~ +4V)
Hz/V output (-12V ~ +12V)
Frequency knob: Bi-polar offset of frequency
Width knob: Bi-polar control of width of the output
Adding Amp: This can be used for mixing control voltage signals or sound signals. When not plugged into an outlet, the adding amp operates as if -5V and +5V inputs were connected to its two channels. Therefore, depending on how you set up your equipment, you can also use the adding amp as a voltage supply, or to shift a control voltage to a higher or lower value, and so forth.

Two inputs each with level knob
Mix output
In 1 normalled to a +5V DC signal
In 2 normalled to a -5V DC signal
Trigger\Gate: This lets you change either type of trigger signals, S-Trig or V-Trig, into the kind of trigger signal you need by means of the Reverse switch.

2 Identical sections featuring:
Input (Vth = +2.5V)
Output (0V ~ +15V)
Reverse Switch
LED Indicator"

Korg MS-20m Monophonic Synthesizer Kit and SQ-1 Step Sequencer Video & MS-20m Details

Uploaded on Jan 15, 2015 Korg

"The new MS-20m and SQ-1 open a whole world of analog experimentation. Connect, sync, and sequence all your gear with the flexible SQ-1 Step Sequencer, and take the famous MS-20 sound to new levels with the FM and sync features of the tabletop MS-20m"

Note the SQ-1 comes included with the MS-20m kit. The MS-20m has a selectable filter switch on the front panel while the original MS-20 kit had to be set internally. There are number of additional improvements outlined directly below. [Details on the SQ-1 just posted here]. Fun little bit of trivia is you can see SN 000001 on the back image below. Often there is no serial number in promo shots. Thought it was kind of neat and adds to the history of whomever this particular unit ends up with.  Also note it's lower case "m".

First, the enhancements over the original:

"Carrying on the distinctive synthesis of the MS-20, the MS-20M features additional improvements in both looks and functionality. Extending to detailed aspects of the design, the sound-creating possibilities have been dramatically boosted, making this sound module even more attractive and raising it to an even higher state of completion.

SYNC ON/OFF switch allows oscillator sync
Oscillator sync forcibly synchronizes the phase of VCO1 to the phase of VCO2, producing a powerful sound with complex overtones.

FM ON/OFF switch allows frequency modulation
The VCO1 waveform can be used to frequency-modulate the VCO2 waveform (FM or cross modulation), creating vibrato effects or extreme metallic sounds.

FILTER TYPE switch lets you select two types of filter
The original MS-20 used two different VCF circuits depending on the date of production, and now you can choose either of these with a single switch. The earlier model (REV.1) has an aggressive character with distinctive distortion and self-oscillation, while the later model (REV.2) has minimal noise and a sweet, mellow sound.

PWM IN jack allows pulse width modulation
The PWM provided on the MS-10 of the past is now possible on the MS-20. By cyclically modulating the pulse width of the VCO1 square wave, you can obtain a distinctively fat sound.

EG2 NORMAL OUT jack expands your sound-creating potential
In addition to the previous EG2 REV OUT, we've provided a normal EG2 OUT that varies in the range of 0V--+5V.

TRIG SW button lets you conveniently audition the sound
Even on this keyboardless unit, the trigger switch lets you smoothly audition the sound while you edit the parameters.

Numerous jacks have been added to the MS-20M, letting you connect it with any type of device.

All CV/GATE specifications are supported: Hz/V and V/Oct, S-Trig and V-Trig
From the time when it was originally produced, the CV standard used by the MS-20 was not the commonly used V/Oct standard, but rather the Hz/V standard that provided superior pitch stability. However, like the MS-50 of that time, the MS-20M Kit provides CV IN jacks for both the Hz/V standard and the V/Oct standard.

For the TRIG IN jack that receives gate signals, jacks are provided not only for the S-Trig standard as on the original MS-20, but also for the widely used V-Trig standard. The MS-20M Kit supports any sequencer or controller that's equipped with CV/GATE output.

Three JUNCTION jacks
Three sets of the junction jacks once provided by the MS-50 are also provided. Output signals from the SQ-1 step sequencer or similar device can be converted from a mini-phone plug to a 1/4" phone plug, or those signals can be distributed to multiple destinations for a variety of possibilities.

MIDI IN connector and USB connector
There's a MIDI IN connector that can receive note messages, and a USB-MIDI connector that can transmit and receive note messages. You can perform using a taktile or other MIDI keyboard, or perform sequences that you've recorded on your DAW.

And the general description for the archives:

"The evolution of the MS-20, delivering even more powerful synthesis.
A module that you assemble, with a step sequencer included.
The classic MS-20 analog synthesizer that appeared in 1978 has been reborn as a perfect reproduction of the original circuit, first in 2013 as the mini-sized MS-20 mini, and now in 2014 as the MS-20 Kit that you can assemble yourself.

The MS-20 Mini and the Kit were designed by the engineers who developed the original MS-20. At its introduction, the designers of the MS-20 wanted to create an interesting product quickly; the result was an enormous hit, but the designers felt there were actually a few things left undone. Now, after 37 years, the user-assembled MS-20M Kit has been completed.

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KORG MS-02 CV Converter with Original Box & Manual SN 170580

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"Basically, the MS-02 is a handy CV/Gate Utility.

LOG AMP Hz/V-to-Oct/V Converter
ANTILOG AMP Oct/V-to-Hz/V Converter
ADDING AMP CV Adder
TRIGGER PROCESSOR (x2) Trigger Converter & Reverser
JUNCTIONS Multiples

Control Voltage converter for Korg MS-series synths (and others using Hz/V control) to work with devices using the more usual Octave/V system (and vice-versa).

1. LOG AMPLIFIER
Tuning / Width / Hz/V input (0~15V) / Oct/V Output (-12V~+12V)
2. ANTILOG AMPLIFIER
Tuning / Width / Oct/V input (-4V~+4V) / Hz/V output (-12V~+12V)
3. ADDING AMPLIFIER
Channel 1 level control / Channel 2 level control / Input Channel 1 / Input Channel 2 / Output
4. TRIGGER PROCESSORS x 2
Trigger indicator / Reverse switch / Input (Vth=+2.5V) / Output (0V~+15V)
5. OTHERS
Power switch / Pilot lamp
6. JUNCTIONS
4x2 / 3x1
7. DIMENSIONS
283 (W) X 110 (H) X 195 (D) mm
8. WEIGHT
2.2kg
9. POWER CONSUMPTION
Voltage (local voltage - 50/60Hz) / wattage (5W) / 240v with Australian Standards plug."

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New KORG SQ-1 2x 8 Step Sequencer Details

Details are in. The new sequencer runs on batteries and supports both Hz/V & V/Oct.  Connections can be made via CV, USB and MIDI out via littleBits OUT jack (mini monaural phone jack).

Overview and specs via KORG:

"When the classic MS-20 analog synthesizer appeared in 1978, it had a trusted partner in the SQ-10 step sequencer. Now, after thirty years, the MS-20 has been reborn as the MS-20 mini, and the SQ-10 has evolved into the more modern SQ-1.

The SQ-1 is a compact step sequencer with 2 x 8 steps. It's wealth of connection jacks allows it to be connected to the MS-20 and a variety of other synthesizers. Vintage analog synths or the latest compact synths can be controlled from this single unit. You can also switch between a variety of synthesizer modes and use the step buttons to create performances overflowing with spontaneity, just as when using a volca unit.

Liberate yourself from the numerically-bound parameter editing that's typical on a DAW; you'll enjoy truly musical inspiration as you train your ears and concentrate on what your fingertips are doing. Don't miss the experience of music that's driven by your instinct."

Sequencer Mode
ALTERNATE, ORDER, PARALLEL TURN, PARALLEL ORDER, CV/DUTY, CV/SLIDE, CV/DUTY RADOM, RANDOM

Step Mode
GATE ON/OFF, ACTIVE STEP, SLIDE, STEP JUMP

Sequence Step Resolution
quarter notes, eighth notes, sixteenth notes

CV OUT Pitch
Linear, Minor, Major, Chromatic

CV OUT Voltage
1V, 2V, 5V (Oct) 8V (Hz/V)

GATE OUT Polarity
+ (positive polarity), - (negative polarity)

SYNC IN/OUT Polarity
+ (rise), - (fall)

Connectors
- littleBits OUT jack (mini monaural phone jack)
- OUT (MIDI OUT) jack (mini stereo phone jack)
- CV - A OUT - GATE jack (mini monaural phone jack, CV OUT : Output Level 1V, 2V, 5V, 8[Hz/V], GATE OUT: output level 10V)
- CV - BOUT - GATE jack (mini monaural phone jack, CV OUT : Output Level 1V, 2V, 5V, 8[Hz/V], GATE OUT: Output Level 10V)
- IN – SYNC – OUT jack (mini monaural phone jack, SYNC IN: Max Input Level 20V, SYNC OUT: Output Level 5V)
- USB jack (type B, USB MIDI)

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GSE KVP Pitch Calibration Procedure w/ Korg MS-20 + Keystep Pro

gstormelectro

"Audio + Video by G-Storm Electro c. 2021

In this video I will be showing how to calibrate my KVP (Korg Voltage Processor) module.
While I test and calibrate the tuning of all modules, re-calibration may become necessary when the settings get too far out of whack.
I will give some helpful tips as well as a detailed step-by-step explanation of the calibration process.

This video is of a technical nature.
If you're wanting basic information about the KVP and its uses, be sure to check out my other video [posted here]

Timestamps
0:00 Intro, Helpful Tips, Setting Up the Keystep Pro
KEYSTEP PRO: Global Setting CV Base Note = C-2
2:28 V/OCT to Hz/V Calibration
Be sure to trim FREQ with the "low C" note
And trim WIDTH with the "high C" note.
7:01 Hz/V to V/OCT Calibration
Be sure to trim FREQ with the 'A' note
And trim WIDTH with the "high C" note

Keep in mind the KVP is an analog signal converter, controlling an analog MS-20 synthesizer.
And when converting Hz/V to V/OCT, we may be also using the MS-20 to control yet another analog VCO device.
Given these things, the pitch won't be absolutely perfect - but the base frequency and tracking should be well within musically acceptable margins."

KORG MS02 Control Voltage Interface Demo

YouTube via dragonfly2270 | July 01, 2010

"This is a demo of my Korg MS02 Control Voltage Interface for sale on Ebay."

via this auction

"The Korg MS-02 Interface is a handy CV/Gate Utility designed for the Korg MS-series monophonic synths to interface with Roland,Moog and ARP world, because the MS-10, MS-20 (and Yamaha CS- series synths) all run in Hz/V. It has the following connections:

-LOG AMP Hz/V-to-Oct/V Converter
-ANTILOG AMP Oct/V-to-Hz/V Converter
-ADDING AMP CV Adder
-TRIGGER PROCESSOR (x2) Trigger Converter & Reverser
-JUNCTIONS Multiples"

KORG MS02

via this auction
"Basically, the MS-02 is a handy CV/Gate Utility. It was designed for the MS-series to interface with the outside world, since the MS-10, MS-20 all run in Hz/V. It has the following in 1 box:
-LOG AMP Hz/V-to-Oct/V Converter
-ANTILOG AMP Oct/V-to-Hz/V Converter
-ADDING AMP CV Adder
-TRIGGER PROCESSOR (x2) Trigger Converter & Reverser
-JUNCTIONS Multiples"

Feed External VCOs into the Korg MS-20 Synth using KVP [Quick Tip]

gstormelectro

"Audio and Video by G-Storm Electro c. 2020

Quick Tip using the KVP to send external VCOs into the MS-20.
KVP stands for Korg Voltage Processor, and is derived from the vintage MS-02 voltage processor no longer in production.
As you're already aware, you can use KVP to convert eurorack pitch (v/oct) to the Korg standard (hz/v).
And use your sequencer to control the MS-20....

But what about the other (Korg hz/v)-to-(Euro v/oct) pitch converter?
Sure! Use the MS-20 to control your eurorack VCOs.
Take it only one step further to send the external VCO output INTO the
MS-20 external input.
To add more VCOs to the MS-20 oscillators for big fat sound.
I will show you how to patch it up.
It works for the vintage MS-20, the MS-20 Mini reissue as well as the Behringer K-2.
And any manufacturer synth using the Hz/v standard.

Some shaky cam footage, I threw this one together in haste...but don't hate :D Hit that LIKE, COMMENT & SUBSCRIBE now.

Some fx added
Delay: Timefactor
Reverb: Big Sky

KVP and many other cool eurorack modules are available in my Reverb Store

Recorded direct to Tascam DR-05."

Metasonix TM-3 SN80 Tube VCO SN TM3-80

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"This VCO has a very unique sound and tracks nearly 2 octaves with a HZ/volt CV source, But be warned, it is not perfectly scaled and is not temperature stable. That's not a defect its just the way it is, If you want pussy trance anthem pads or want to play Mozart then don't buy this. It's definitely a raw meat kind of aural experience, chewy and tough.

The METASONIX TM-3 consists of two thyratron tube sawtooth oscillators, which are wired in parallel but may be offset with their individual front-panel tuning controls. Furthermore, soft sync is available, to force oscillator 2 to track with oscillator 1.

The waveform produced by the 2D21/5727 thyratrons is unique and distinctive--a very imperfect sawtooth. It's the kind of sound that screams "VINTAGE", because the only other instruments that produce it are vintage ones--the Mixtur-Trautonium, the Univox, and some 1950s electronic organs.

Furthermore, there is a suboctave circuit, which adds a square wave one octave below oscillator 2. It includes short pulses an octave above, for a distinctive sound. And you can mess with the STABILITY control to get unique effects--because the suboctave divider is made of two neon lamps, and NOT a transistor flip-flop. Except for the CV driver, the TM-3 is all tubes.

And unlike most other synthesizer VCOs, the TM-3 is so sensitive that it is easily used for FM sound effects--simply by driving either CV input with a line-level audio signal. Both inputs are DC coupled and highly sensitive. The result is a unique, and very extreme, form of signal distortion.

The TM-3 is a Hz/V VCO, meaning it follows a linear characteristic. Each successive octave requires doubling the control voltage. As shipped, the first octave is swept from 0 volts to 0.25 volts, the next from 0.25 to 0.75 volts, etc. Although not standard to the present modular-synth industry, this scheme simplifies the TM-3's use as a signal processor, and avoids the use of an exponential converter circuit, which can drift with temperature or cause other problems. TM-3's CV control is compatible with vintage Korg MS series and Yamaha CS series synthesizers.

Technical specifications

Output signal max approx 10 v p-p. Capable of approximately 66 Hz to 526 Hz. Center pitch setting with tuning knobs and 0.0v input gives approx. low C (66 Hz). Actual range obtained depends upon individual thyratron tubes installed--about 2 1/2 octaves is typical. May be controlled from any MIDI-CV converter having Hz/V capability, including the Synhouse MIDIJACK II, Philip Rees Little MCV, Kenton Pro-Solo and Pro-2000, and Encore Expressionist.

Power input 10v AC to 12v AC, 50/60 Hz, 1 amp max at idle--derived from an appropriate plug-in AC adapter. Inputs: two 1/4" phone jacks for CV or audio (they mix linearly). Output: 1/4" phone jack, audio, mono, 50k ohm impedance.

Dimensions: 7 1/2" (192mm) x 4 3/8" (112mm) x 3" (77mm). Weight not including accessories approx. 5 pounds (2.2 kg).

This is used electronic gear in great shape (low hours) from a smoke free home studio. I test it before it ships, but it is non returnable and there is no guarantee other than it will not arrive DOA. Rock On!!"

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Kenton MODULAR SOLO High Specification Eurorack MIDI to CV converter

Note: Auction links are affiliate links for which the site may be compensated. via this auction
analoglsd (RSS)

"The Modular Solo is supplied complete with ribbon cable ready to fit into any Eurorack (A100) format modular system.

Power is supplied by the power supply in the modular case via the backplane
Power consumption +12V supply 85mA max / −12V supply 3mA
+5v supply is not required (needs +/−12V only)
CV & Gate signals can be sent via the ribbon cable to the system bus - selected using jumpers
MIDI In & Out on DIN sockets (MIDI Out can be switched to give DIN Sync 24 instead)
Analogue output CV on 3.5mm mono jack (V/oct or Hz/V or 1.2V/oct)
Gate on 3.5mm mono jack (Gate or S-trig – with or without pullups)
Aux1,2,3,4 on 3.5mm mono jack (all continuously variable)
2x independent clock outs on 3.5mm mono jack
Weight 170g
Dimensions 128mm high x 50mm wide x 80mm deep
D to A conversion for main CV 16 bit high quality / low drift DAC
Non-volatile memory EEPROM (no back-up battery required)
Processor 32 bit ARM processor

Designed to control all types of mono-synth
Super-fast response time
Famous Kenton build quality
High specification 16 bit D/A converter for main CV for rock-steady pitches
CV/Gate/Aux/Clock outputs on 3.5mm mono jack sockets (3.5mm to 1/4" cables are available in our cables section)
CV & Gate signals can be sent via the ribbon cable to the system bus - selected using jumpers
MIDI IN socket (5 pin DIN)
MIDI OUT/THRU (5 pin DIN) socket can be switched to become DIN Sync 24 instead
Any MIDI channel can be selected
Switchable for V/oct & Hz/V & 1.2V/oct scaling systems
Fine tune & scale are software controllable
Transpose (coarse tune) - up & down 12 semitones
Adjustable pitchbend range - up to 12 semitones
Programmable Gate V-trig (up to 10V) or S-trig (with or without pull-up)
Multiple and single trigger modes
Note priority selection - newest / lowest / highest
Old notes are remembered to facilitate trill effects and increase playability

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etasonix TM-3 Gas-Tube Dual Voltage-Controled Oscillator

via this auction
"(taken from Modular Square)
The METASONIX TM-3 is the only voltage-controlled oscillator on the market with an all-tube signal path. It consists of two thyratron tube sawtooth oscillators, which are wired in parallel but may be offset with their individual front-panel tuning controls. Furthermore, soft sync is available, to force oscillator 2 to track with oscillator 1.The waveform produced by the 2D21/5727 thyratrons is unique and distinctive--a very imperfect sawtooth. It's the kind of sound that screams VINTAGE, because the only other instruments that produce it are vintage ones--the Mixtur-Trautonium, the Univox, and some 1950s electronic organs. Furthermore, there is a suboctave circuit, which adds a square wave one octave below oscillator 2. It includes short pulses an octave above, for a distinctive sound. And you can mess with the STABILITY control to get unique effects--because the suboctave divider is made of two neon lamps, and NOT a transistor flip-flop. Except for the CV driver, the TM-3 is all tubes. And unlike most other synthesizer VCOs, the TM-3 is so sensitive that it is easily used for FM sound effects--simply by driving either CV input with a line-level audio signal. Both inputs are DC coupled and highly sensitive. The result is a unique and very extreme form of signal distortion. The TM-3 is a Hz/V VCO, meaning it follows a linear characteristic. Each successive octave requires doubling the control voltage. As shipped, the first octave is swept from 0 volts to 0.25 volts, the next from 0.25 to 0.75 volts, etc. Although not standard to the present modular-synth industry, this scheme simplifies the TM-3's use as a signal processor and avoids the use of an exponential converter circuit, which can drift with temperature or cause other problems. TM-3's CV control is compatible with vintage Korg MS series and Yamaha CS series synthesizers.
tech specs
Output signal max approx 10 v p-p. Capable of approximately three octave range with CV control, 66 Hz to 526 Hz. Center pitch setting with tuning knobs and 0.0v input gives approx. low C (66 Hz). Actual range obtained depends upon individual thyratron tubes installed--about 2 1/2 octaves is typical. May be controlled from any MIDI-CV converter having Hz/V capability, including the Synhouse MIDIJACK II, Philip Rees Little MCV, Kenton Pro-Solo and Pro-2000, and Encore Expressionist. Inputs: two 1/4"" phone jacks for CV or audio (they mix linearly). Output: 1/4"" phone jack, audio, mono, 50k ohm impedance. Power input 10v AC to 12v AC, 50/60 Hz, 1 amp max at idle"

Metasonix R-55 Thyratron VCO Vacuum Tube Oscillator Eurorack Module

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

bigcitymusic special edition on the bottom.

"For Sale: (1) Metasonix R-55 Thyratron VCO synthesizer module in eurorack modular format. This was a limited edition module that was only sold at Big City Music and is not longer available. Includes M3 screws and power supply ribbon cable. From Metasonix:

The R-55 is essentially one of the VCOs in the legendary S-1000 Wretch Machine in a 22U Eurorack module. It produces the notorious "sharkfin" sawtooth waveform of thyratron VCOs, replete with the weird pitch variations and apparent ﾓnoisinessﾔ of a thyratron oscillator.
Turn up the overdrive control, and the oscillator output clips the output amplifier pentode tube, for a unique soft-clipped square-wave sound. The simplicity of the R-55 will fool you--its behavior is erratic and weird, it always sounds broken, and the waveform is deviated in every way. You don't even need to feed it Hz/v CV; just run a square-wave or pulse signal from a conventional VCO into a pitch CV input, and it will force the R-55 to track along with the other VCO.

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Jedonian {Eurorack CV Converter}

Published on Oct 30, 2013 Touell Skouarn·5 videos

"Jedonian : V/oct to Hz/V - Hz/V to V/oct converter and their respective Strig/Vtrig: Korg to eurorack and eurorack to Korg.

Connexions :
MS20 Keyboard CV out into Jedonian Hz/Volt input
Jedonian V/oct output into Analog Solution VCO CV In
Analog Solution Audio into MS20 Ext Audio In"

Behringer Roland System 100m Clones - Full Line-up of Modules & Details on Each

Follow-up to this post. Some additional details from Uli Behringer:

“These are 13 MID’s or concept documents we create for every single product as part of our PLM (Product Lifecycle Management) process before we hand them over to our R&D departments for development,” he notes. “We haven’t decided yet which of these modules we will actually produce as it is important that we achieve a certain production volume.”

“This is just the beginning,” he adds. “Our Vision is to build both legacy modules but also come up with innovative solutions which we have demonstrated with the DeepMind or the Neutron.”

We are equally excited to cooperate with creative module makers and many have already contacted us. We believe that such co-operations are mutually beneficial and I am convinced that our efficient supply chain can help these makers to get their products into the hands of lots of people. We are looking forward to meeting as many designers as possible at SuperBooth.”

All modules and specs:

165 Dual Portamento Controller for Eurorack

Legendary 165 dual Portamento Controller module from the ‘80’s
Authentic reproduction of original “System 100M*” circuitry
Artist roster includes world’s most famous pop, rock and jazz musicians
Dual Portamento Controllers with 2 controls and On/O switch
Each controllers has CV, Portamento and MPX inputs plus CV outputs
Eurorack specs: 16 HP, XX mA +12 V, XX mA -12 V
6 controls and switches give you real-time access to all important parameters

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KORG MS-03 Signal Processor Pitch-to-Voltage Converter with Original Box SN 180634

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"This signal processor converts any audio signal input (synth, mic, guitar etc) into a synthesiser control voltage, trigger or gate output.

1 . INSTRUMENT INPUT
Level control
Peak level indicator - Range (Low=70Hz~1.4kHz / High=140Hz~2.8kHz)
Mode (1,2,3)
Signal input
2 . PORTAMENTO
Time control
Remote switch input
3 . PROCESSOR OUTPUTS
Hz/V CV adjust
Oct/V frequency adjust
Oct/V width adjust
Trigger indicator
CV output: Hz/V (0~8V); Oct/V (+1~+5V)
Trigger output
Direct output
CV HOLD Remote input
CV & TRIG HOLD Remote input
TRIG CANCEL Remote input
4 . OTHERS
Power switch
Pilot lamp
5 . DIMENSIONS
283(W) x 110(H) x 195(D) mm
6 . WEIGHT
2.4kg
7 . ACCESSORIES
Foot switch (S)
8 . POWER CONSUMPTION
4W / 240v with Australian Standards plug."

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KORG MS02

Title link takes you to a couple more shots pulled via this auction. Not the best, but you don't see these often.

Details:
"Here we have a Korg MS-02 Interface in PERFECT WORKING ORDER. Sorry for the out of focus photos. Cosmetically in GREAT shape, a 9 out of 10. No particular blemish stands out as worth mentioning, just some occassional surface scratches and smudge marks, but again, in great cosmetic shape, especially for a 30 year old item. I have the original manual and will send that as well.

From the manual:

"For complete connection compatibility between synthesizers.
The MS-02 is ideal if you want to upgrade your synthesizer by adding on other synthesizer units having different kinds of keyboard control voltage and trigger signals. The built-in, fully adjustable log amp, anti-log amp, and trigger processor ensure complete system flexibility and compatibility between any presently voltage controlled synthesizer."

Meaning, you can use this unit to connect any major analog synth with CV in/outs to any other synth with CV ins/outs. Hugely useful for connecting your Moog to your MS 20, or your ARP to your MS 10, or whatever you desire. Crazy Analog synth sounds possible!

Furthermore, it has juntion points on the bottom, which is hugely useful for modular patching. For instance, on the korg ms 20, it only allows you to patch one parameter to only one other paramater, but with the junctions, you simply connect your parameter in, and have the possibility to patch it to two, or even THREE different other patch points. This doubles or even TRIPLES your possibilities!!! So useful!

Here are the specs:
1. LOG AMPLIFIER Tuning
Width
Hz/V input (0~15V)
Oct/V Output (-12V~+12V)
2. ANTILOG AMPLIFIER Tuning
Width
Oct/V input (-4V~+4V)
Hz/V output (-12V~+12V)
3. ADDING AMPLIFIER Channel 1 level control
Channel 2 level control
Input Channel 1
Input Channel 2
Output
4. TRIGGER PROCESSORS x 2 Trigger indicator
Reverse switch
Input (Vth=+2.5V)
Output (0V~+15V)
5. OTHERS Power switch
Pilot lamp
6. JUNCTIONS 4 x 2
3 x 1
7. DIMENSIONS 283 (W) X 110 (H) X 195 (D) mm
8. WEIGHT 2.2kg
9. POWER CONSUMPTION Voltage (local voltage, 50/60Hz), wattage (5W)"

New G-Storm Electro KVP MS-20 to Euro Pitch CV + Gate Voltage Processor Demo

Published on Oct 3, 2019 gstormelectro

Available exclusively here

Audio and Video by G-Storm Electro c. 2019

Today I am introducing my new module - the KVP.
KVP is a pitch and gate CV processor that makes the MS-20 compatable w/ Eurorack (v/oct).
It works for the vintage MS-20, the MS-20 Mini reissue as well as the Behringer K-2.
And any manufacturer synth using the Hz/v standard.

Percussion: Basimilus Iteritas Alter
Sequencing: Arturia Beatstep Pro
Delay: Timefactor
Reverb: Big Sky

Recorded direct to Tascam DR-05.

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Module description:

So you want to control your vintage MS-20 / MS-20 Mini / Behringer K-2 (and more!) from Euro modules.
But when you do, it sounds weird – the pitch is wayyy not right.
And the gate triggers… forget-about-it. KVP can help with that.

KVP can take Euro pitch voltages (v/oct), and process them to standards used by Korg.
Pretty much any manufacturer that uses the Hz/v standard.
It can also do the other way around so you can control your v/oct synths and Euro modules pitch from the MS-20.
Dialing in the frequency and tracking width is a breeze using multi-turn trim pots accessible from the front panel.
KVP will generate about 3 octaves of tracking (C1 to C4) - same as the MS-20 keybed.

KVP also has 2 processors for handling gate signals as well.
Slide the TYPE switch to the right (convert) and it can convert Korg to Euro gates or the other way around.
Slide the type switch to the left (no conversion) and the same gate that goes in is what comes out.

Korg MS02

images via this auction
"# Designed for the purpose of connecting Korg MS-Series synthesizers with other synthesizers throughout the world.
# This sophisticated signal processor greatly enhances the performance possibilities of the MS-Series.

Specs:
* Log Amplifier: Tuning, Width, Hz/v Input (0~+15v), OCT/v Output (-12~+12v).
* Antilog Amplifier: Tuning, Width, OCT/v Input (-4~+4v), Hz/v Output (-12~+12v).
* Adding Amplifier: Channel 1 Level Control, Channel 2 Level Control, Input Channel 1, Input Channel 2, Output.
* Trigger Processors x2: Trigger Indicator, Reverse Switch, Input (Vth=+2.5v), Output (Ov+15v).
* Others: Power Switch, Pilot Lamp.
* Junctions: 4x2, 3x1.
* Dimensions: 11 1/8" W x 7 5/8" D x 4 1/4""

BEHRINGER K-2 Tutorial & Review, with 18 patch ideas (that also apply to KORG's MS-20)

Published on Dec 26, 2019 loopop

TIMELINE:
0:00 Intro
1:00 Overview
2:40 Filters
4:40 Layout
5:30 Oscillators
8:15 LFO/Mod gen
10:05 Envelopes
14:15 Hz/v, v/oct
15:45 S-trig, v-trig
16:30 Patch bay
18:05 ESP & guitar
20:50 Track & hold
22:20 PATCH IDEAS
22:25 TIP #1: Controlled noise thru ESP
23:30 TIP #2: Controller noise thru VCA
23:55 TIP #3: Using the modwheel to attenuate signals
24:20 TIP #4: How to create a Random LFO
26:35 TIP #5: How to control oscillator pitch with a v/oct signal without a hz/v to v/oct converter
28:15 TIP #6: Using the high pass filter for a bass boost
28:30 TIP #7: Drone mode patch
28:50 TIP #8: Creating distortion using the ESP VCA and a feedback loop
29:40 TIP #9: How to make Filter 2 more aggressive than Filter 1
30:10 TIP #10: The hidden oscillator: Creating and controlling oscillator using ESP feedback
31:20 TIP #11: ESP osc as drone oscillator
31:40 TIP #12: ESP osc as a high-frequency modulator
32:20 TIP #13: Analog bitcrush: Using the new ESP osc and the Sample and Hold to create a downsampling/bitcrush effect.
33:30 TIP #14: Playing K-2/MS-20 duophonically using the Track & Hold (sample and hold) circuit and the trick switch
34:50 TIP #15: Playing K-2/MS-20 duophonically using the keyboard trigger and playing legato
35:50 TIP #16: Using KeyStep for a full duophonic experience
37:15 TIP #17: Applying portamento in duophonic
37:45 TIP #18: Using the filters to give each oscillator its own articulation
38:35 Pros & cons

KORG MS-02 Interface

Note: Auction links are affiliate links for which the site may be compensated. via this auction

"You can use this to interface KORG's MS series synths and other vintages like Yamaha etc with V/Oct synths and sequencers...
Features:

LOG AMP Hz/V-to-Oct/V Converter
ANTILOG AMP Oct/V-to-Hz/V Converter
ADDING AMP CV Adder
TRIGGER PROCESSOR (x2) Trigger Converter & Reverser
JUNCTIONS Multiples"

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