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

ELKA Solist 505 this is ex-gear / sold

ELKA Solist 505 overview

The ELKA Solist 505 is a little, affordable, italian, late seventies, monophonic preset synth.
The preset sounds are of the same quality as on other preset synths from this time and in this price tag range. It only features a very few user editable parameters in the "Variation" mode. But when you use the filter and change its frequency and "Wow" amount, you will notice its nice sound.
The plastic top and its metal front and bottom plate are made well enough to be used live. The two slots on the top are for a note paper support that came with the unit then (lost on mine).
The buttons on the front tell you that it was market as an organ set-atop keyboard like most monophonic preset synths. Maybe because those players did not like the knob loaded synths and preferred the easy and quick to set presets sounds more then other buyers of synths. And ELKA was mainly an organ manufacture.
The 11 presets are:

  • Trombone
  • Trumpet
  • Sax
  • Clarinet
  • Oboe
  • Guitar
  • Hawaiian Guitar
  • Violin
  • Flute
  • Cosmic
  • Telstar
The available parameters to change the preset's sounds are:
  • Slow Attack
  • Decay
  • WOW (bandpass plus resonance)
  • Cut-Off Filter (filter's cut-off frequency)
  • Vibrato Depth (the speed is stored in the preset)
  • Bend (auto bending at note start from low to played pitch)

The highest key doubles the note c key one octave below. This saved them one octave sensing stage of the keyboard logic. So this is a kind of hardware bug by design. This is something you have to get used too while playing. But there is one little special thing hidden under the keyboard (while all other electronic are behind the keyboard) inside:

ELKA Solist 505 filter inside

Do you spot those two Moog transistor ladder filters?
The 10 transistors needed are left and right those 4 capacitors with the bright orange colour. At that time these filters were still under a patented. So this was most likely not 100% legal. Or did they pay for it???

Anyway, one ladders output is inverted and then mixed with the output of the other parallel ladder to team up as a bandpass filter. But most presets use lowpass filters.

ELKA Solist 505 inside

ELKA Solist 505 inside

The other boards inside are producing the keyboard logic, the oscillator (not a VC one, but an organ like styled), the preset waveforms, the envelopes, the VCA and the two filters.

All in all well done an solid build.

Sound example:
Have a listen to a 5.6 MB mono 3:03 256 kb/sec mp3:

 [download mp3]

No FX or EQ used. recorded straight into my iMac.

First you hear the presets (from left to right), then some preset variations. The first one being based on the Hawai Guitar preset.

Sound example music track:
Michael Brückner bought my ELKA Solist 505 and recorded a 10:32 mins long track on the first day. The monophonic lead voice played through his old Yamaha guitar effect processor is the ELKA. The other parts are (two sequences mainly) were done in Reason.

 [download mp3]

© Michael Br├╝ckner 2013.