1978 RSF Kobol

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via this Reverb listing

"Here is a rare occasion to buy a RSF Kobol and in full working condition. Internal battery has been replaced. Cosmetic condition as per the pictures, close to excellent apart from the cracks due to its age. It comes with its original paper manual (not in the pictures). The RSF Kobol is one of the very best vintage monophonic synths ever designed with its distinctive powerful and precise sound and one of the sexiest User Interface ever designed. Plus it has 16 memory slots and the ability to sequence these slots making it one of the most powerful sequencers of its time. You can trigger it from any 5V clock (eurorack standard).

In addition to the original paper manual this Kobol also comes with a very sturdy, very heavy (27 kgs !!) custom wooden box with foam inside, however you can have the it shipped without the case if you prefer so, since the case alone weighs more than twice the synth itself!"

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Kobol Synthesizer Filter demo #electronicmusic #synth

video upload by mowby one

"A short video demonstrating the filter on the Kobol and why it’s so good for bass"

Rsf Kobol

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via this VEMIA listing

Click the auction link on top when you get there for additional listings.

VEMIA is Peter Forrest's auction house. He is the author of The A-Z of Analogue Synthesizer Books.

"Here is a very rare occasion to buy a RSF Kobol and this one is in full working condition. Internal battery has been replaced. Its worse cosmetic flaw being the crack in its right flank as shown in the pictures, which has not cracked further for the last 20 years. Feels totally solid. Otherwise the cosmetic condition is excellent. It comes (not in the pictures) with its original paper manual and in a very sturdy custom wooden box with foam inside that is also very heavy. So if you want to ship you will have to tell us if you want the box or not as since it weighs almost as much as the synth it will have a significant impact on the shipping cost. The RSF Kobol is one of the very best vintage monophonic synths ever designed with its distinctive powerful and precise sound and one of the sexiest User Interface ever designed. Plus it has 16 memory slots and the ability to sequence these slots making it one of the most powerful sequencers of its time. You can trigger it from any 5V clock. More information can be found here : https://www.vintagesynth.com/rsf/kobol-expander and here : http://rsf-synth-official.com/cadre.html"

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Four voice RSF polyphonic Kobol rack

video upload by yusynthman

"This is a video of Olivier Grall testing it's very rare polyphonic (4 voices) kobol rack (RSF) he purchased in the beginning of the eighties. Les than 10 of these were built by Ruben Fernandes. I had the chance to overhaul it and this is a video of the testing."

RSF Kobol »French Minimoog« rare vintage synthesizer

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via this listing

"Only around 200 units were built in the '70s and maybe only 50 are left - probably less.

The unit is all original with big knobs (hell yes!) and a sequencer that steps through presets, not notes!"

Rare "Engineer Sample" Behringer Kobol Keyboard Spotted

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via this listing

This one was spotted and sent in via
M Me.

"Not in production. Not available anywhere.

Perfect for your Youtube video or synth channel.

Rare opportunity to own one of a kind synthesizer keyboard.
This is the Behringer Kobol Keyboard. There's a label in the back showing this to be an "Engineer Sample".

All controls and keys seem to be working. Although given this is not a production model, there could be quirks. The Pitch and Mod wheels light up when activated. The LED bar changes when knobs are turned.
I had tested only the audio outputs - headphones, main out, and amp out. Other connections and USB are untested.

Good overall physical condition, but there are very visible scratches and dings and dents on the panel, as shown in the photos.
The back stand has 3 positions for tilt adjustment."

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RSF Kobol Expander SN 13379

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via this listing

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RSF Kobol Expander Modular Synth System 1978

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via this listing

Pics of the inside below.

"Up for sale is an extremely nice clone of the RSF kobol expander 1 and an original RSF kobol expander 2. The clone is made with original SSM chips for the filter and envelopes and original ua726 for the oscillators. I was able to tune it up so that the knobs match my original expander exactly and it now sounds 100 percent identical. It also runs off of 18 volts and is even slimmer than the original. This expander alone would make a great travel synth.

I had plans to make new faceplates and build a travel case for these guys but I have too many projects going on right now. It’s a great oppurtunity to get these two for a bit cheaper than what they have gone for in the past. The expander 1 is simply the best bass synth ever. Super snappy and great for leads as well. The behringer and moslab clone both missed the mark in my opinion. There’s something very special about the wave shaping of the original and I was amazed that I got the clone to imitate this behavior exactly. The ringmod on the expander 2 is really interesting/ dirty pairs well with the wave shaping. Be careful with purchasing kobols as there are clones out there. Always ask for inside shots of the units. I A dead give away is usually the switches.

The expander 1 is in perfect condition. The expander 2 has a slight dent on the corner that was not noricable when racked and the faceplate has a few scrapes. Both are in excellent working order with no scratchy pots or anything."

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RSF Kobol Expander *Vintage *Serviced

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via this listing

"For sale is a very rare RSF Kobol Expander. Made in limited quantities in the late 1970’s. Despite its age, it has been serviced and is fully functional.

However, there are two caveats, one knob is missing, and sometimes the tuning isn’t so stable. It is analog synth, modeled after a mini moog after all."

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RSF Kobol

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via this listing

"4 very rare RSF KOBOL elements to sold (in one lot).

Everything is in perfect condition and has just been completely overhauled and cleaned by Jean-Loup Dierstein in Paris (invoice supplied).

There are 4 elements, all placed in a custom rack:

1 expander + 1 patch bay + Expander II + Programmer.

Everything works perfectly. It's a very rare piece and I don't want to sell it element by element."

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Short Jam with Kobol Expander, Korg Delta, and More

video upload by Bata

"Nothing new to post tonight except a short so posting this old video which I never posted due to a missing Mono/Poly part. I have a few videos that will be coming in the next couple days that are all pretty good though so watch out for those!"

Little Saturday Evening Improvisation w/ Jörg Schaaf of Radikal Technologies

video upload by Jörg Schaaf

"Loaded a couple of samples into the VPME quad drum module and had some fun with Delta CEP A 2, EFFEXX, Solina and Kobol clone, beatstep pro and keystep."

RSF Kobol Expander II

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via this auction

"Super rare RSF Kobol Expander 2.
Approx Only +-200 units built.
Not serviced, but fully functional, in good condition (just a few small aesthetic scraches).
Powersuply is 220V.(Europe)

If you own a Kobol expander 1 The Expander2 gives you a full ADSR, S&H, an extra LFO, Lag & noise, ring mod, etc.


It can also be combined with other machines.

Comes with power chord

-- -- -- -- -- -- -- -- --

The rsf's are powerfull synthesizers, built in France in the end of 70's begining 80's, with a HUGE and beautiful, super warm and wide sound.

The Kobol can be coupled with the Kobol Expander 2 and the programmer ( very very rare amazing sequencer ).

These beautiful machines are rare because they were produced by hand by two brothers for only a couple of years."

RSF Programmer (for Kobol Expander)

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via this auction

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RSF Expander 1

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via this auction

#onedrumcomputeraday Drum Synth Videos

video uploads by #onedrumcomputeraday

Playlist:
1. toyo gakki ult sound ds-2

quirky little 70's drum synth made in japan

2. pollard syndrum twin

the pollard syndrum was one of the first commercially available electronic drums. this is the syndrum twin, sometimes called the twindrum - a beautiful drum synthesizer (brain) from 1976 which was part of an electronic drum kit. joe pollard was a session drummer working for the beach boys and other bands.

3. honky tonk music klone kit

sound demo of the quirky klone kit control module. made in the uk 1983 it was a cheap 5 voice alternative to other popular but expensive e-drum solutions of that time. all channels are identical except the snare channel which offers noise. the sound is very limited - followed up by the more flexible klone kit 2. since there's no demo of version 1 I decided to shoot a quick video with proper audio. retail was 299 ukp.

4. elka drumstar 64 (no talking hq audio)

quick demo of all preset patterns from this funky little Italian 80s drum machine.

5. electro harmonix rhythm 12

a short video about the lovely little electro harmonix rhythm 12 vintage analog drum machine from 1976. made in the uk by soundtech and licensed to electro harmonix.

6. rsf sd140 sampling drum machine

I finally managed to shoot a quick video on this super rare french sampling drum machine from 1986 - one of my absolute favorite drum machine of all times :)

7. böhm digital drums m. "digi-rocky" drummachine (no talking hq audio)

audio demo (hq) of all preset patterns (+fills) on this tiny forgotten digital 80s böhm drumbox.

8. electro harmonix drm16 drummachine (no talking hq audio)

short (hq) audio demo of this funky little drumbox from the late 70's

9. soundmaster sd-3 "disco beat" drummachine (no talking hq audio)

quick audio demo of this funky little japanese "stomp box" style disco drum machine from the late 70s.

10. pearl dr-x1

from time to time i have to sell something to make a little room for new stuff ;) so I decided to let this beautiful pearl dr-x 1 go and had to do a quick video before it left my dungeon - I hope you like it, had fun to re-listen and doing a few samples - best, steve

11. lel psr and radel electronic tabla

#onedrumcomputeraday is having a look at the worst digital drum machine ever (?) the russian lel psr in a double feature with the odd indian radel electronic tabla - also featured in a little deconstruction of the arctic sunrise song "forever yours".

12. uno drum - anthology drum libraries

very first & early look at the new & fresh libraries for the ik multimedia uno drum

13. icon design dsm200

last look at my the super rare 80‘s drum synth of icon design ... this one unfortunately had to go 😪 so I decided to create some footage for the world wide web before it's gone ...

14. twisted electrons deton8

checking out the little french 8bit drum machine from twisted electrons

15. dynacord percuter s

a little rough demo of the dynacord percuter s drum module (ca.1985) - including audio demos

16. bme rattlesnake

little jam on the rare bme rattlesnake analog drummachine (ca. 1982)

17. viscount r64s

RSF Kobol Expander 2 SN 13235

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via this auction

"Super rare RSF Kobol Expander 2.
Only +-200 units built.
Fully functional,in good condition.
Powersuply is 220V.(Europe)

If you own a Kobol expander 1 The Expander2 gives you a full ADSR, S&H, an extra LFO, Lag & noise etc."

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The Elusive French Legend, Introducing the KOBOL EXPANDER (Part One) by Behringer

video upload by Behringer

"Vive La France & Vive Le Synthétiseur! Introducing The Behringer KOBOL Expander.

Chapter:
00:00 Intro
00:33 Intro Tune
01:21 KOBOL Prologue
03:43 Demo Epilogue

Video & Music created by Patrick using the Behringer KOBOL Expander & Behringer SWING."

Pics posted here.

Mos-Lab rsf Kobol Expander III Synthesizer

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via this auction

"Very rare Mos-lab rsf expander III 5u modular synthesizer.

Like new and works perfectly. Also included rack 19'' box with power supply."

RSF Kobol Synthesizer with Memory Slots and Built-in Sequencer

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via this auction

"This unit works 100 percent and is in a very good condition. The RSF Kobol was the French synth company's first compact keyboard synthesizer. It is a monophonic analog synthesizer with traditional controls, knobs, switches and two oscillators for a good solid analog synth sound. Unique are the 16 memory slots for saving your sounds and the built in sequencer.

Although it is mostly a traditional analog synth with stable oscillators and lots of knobs that allow you to control the ADS envelope, the filter section and the nice LFO, it did offer some unique features for its time. Most notably, the oscillator waveforms can be continuously swept across for a very cool morph from square to saw to pulse, etc. This, as well as note on/off and other parameters can be controlled via CV/gate. External sounds can be processed through the delicious SSM Kobol filter and envelope sections too."

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