Polyphonic Synthesizer:

Modal 002
Modal Argon8
Moog One 16
Nonlinear Labs C15
Waldorf Blofeld
Waldorf Quantum
Waldorf XTk30
Wersi Stage Performer

Monophonic Synthesizer:

Behringer Odyssey
Casio VL-1 Tone
Dübreq Stylophone
Korg M500 MicroPreset (for sale)
MeeBlip (for sale)
Modal 001 (for sale)
Modal CRAFTsynth
Modal CRAFTsynth 2.0
Modal Skulpt
Modulus monoWave
Moog miniMoog (1979 & 2017)
Moog Minitaur
Moog Prodigy
Moog Sub Phatty
Moog Taurus III
Moog Voyager
Sequential Circuits Pro-One
VacoLoco Zira
Waldorf Pulse (for sale)
Waldorf Pulse 2


Synth-Werk Modular
Synthesizers.com Modular


Korg MS-20 mini (for sale)
TTSH (ARP 2600 clone)

String Machines:

ELKA Rhapsody 610
Eminent 310 theatre (for free!)
Hohner String Vox
Logan String Melody
Waldorf Streichfett
Waldorf STVC

Other Keyboards:

Manikin Memotron
Mellotron Micro


ARP Sequencer (clone)
Baloran TriKo
Behringer Mixer MX2642A
Behringer Mixer MX8000
Behringer Rack Mixer RX1602 (2x)
Boss DR-220E
Digital Raagini
EEH DS 500
Electro-Harmonix Small Stone
Georg Mahr Midi-Ratsche
Georg Mahr Transpo-An-Se
Ibanez Digital Delay DM1000
IBK 10 Control
Korg K25
Kurzweil XM-1 Expression-Mate
Lexicon Model 200 reverb
Modal Craft Rhythm
Mode Machines Krautrock Phaser
Moogerfooger Ring Modulator 102
Moogerfooger 12-Stage Phaser 103
Moogerfooger Analog Delay 104Z
Moogerfooger Murf 105
Moog MP201
OTO Machines BAM
Roland TR-08
Schrittmacher's Inside
Schulte Compact Phaser (19")
Simmons SDS-V
Strymon Timeline
Synthoma Élkorus
VacoLoco Tron
Waldorf 4Pole
Waldorf EQ27
Wersi Voice (BBD FX)
Waldorf midiBay
Waldorf Becher/Mugs


Access MicroWave controller
Alesis Andromeda A6
ARP (Korg mini) Odyssey
ARP Quartet
Crumar Multiman S
Crumar Performer
EES Midi CV7
ELKA Solist 505
ELKA x705
Emu Emax II
Farfisa Soundmaker
Farfisa Syntorchestra
Grp A4
Hohner ADAM
Hohner String Performer
Jen SX1000
Kawai SX-210
Keio Mini Pops 3
Korg PE1000 (Poly Ensemble)
Korg PE2000 (Poly Ensemble S)
Modal 008
Moog Satellite
Oberheim Matrix 6
PPG waves
PPG wave 2.3 (V8.3)
Rhythm Ace 2l
Roland TR 606
Roland M-VS1
SCI model 700
Seiko DS 202+310
Sound-Art Chameleon
Technosaurus Cyclodon
Vermona Piano-Strings
Waldorf microQ keyboard
Waldorf Q
Waldorf XT30
Waldorf Gekko Chords
Waldorf Gekko Arp
Waldorf microWave
Waldorf rackAttack
Waldorf Wave
Waldorf waveSlave
Wersi Baß Synth
Wersi String Orchestra


K. Schulze's "Sense"

Helper Apps:

Hz-2-cent Calculator

M@ail & Impressum

© Till Kopper

Syntomas Élkorus

Syntomas Élkorus front

This is an tripple analog BBD chorus with two LFOs build by Synthoma from Spain. The man behind it is Sergio Koval.
My unit is from the first revision. Rev 2.01 had added 3 CV outs for the three different shifted sums of the two LFOs and a rate and level CV in per LFO. Rev 3 added a a Bypass footswitch input.

So what is it for?

It is doing the very same as all those classic ensemble FX boards in vintage string machines. Much like the french Baloran TriKo. And to get the details right, this unit does not only feature the typical two LFOs modulkate three different analog BBD choruses, but it also let you chose the LFO phase change in either 120 and 180. So yo can get it to sound like differend brands of ensemble FXs. And the LFOs are here not set to a fixed speed and modulation level, but this is changeable with knobs. And there are knobs for the volume and the panning of each individual chorus delay line. Plus a switch to change a preset filter to the typical nasal like quality used by those famous seventies vintage string machines.

Have a listen at Sergios well done and complete demo here:

So you need only a very basic patch with a pulse or saw wave shape and and no detuning feed into it to get a real good string machine sound. No more carrying a bulky string machine to a gig. And time to sell those vintage string machines. Atleast some of them.

I installed it in my new FX rack.

Syntomas Élkorus back

Mono input and stereo output. All at typical line level. A fuse and the power cord at the right.

Syntomas Élkorus inside

Nice build quality. And a build in power supply. And the bypass is a real passive hardware one (very left switch on the front panel)

Syntomas Élkorus TDA350 analog BBD delay chips

Those three socket chips are the TCA350Y BBD analog delay chips. They work as a Bucket Brigade Delay line. See here for some information about the BBDs: en.wikipedia.org/wiki/Bucket-brigade_device