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Korg Lambda

ES-50 Lambda Polyphonic Ensemble (1979)

korg lambda

"Fully polyphonic Classic vintage synthesizer,  a kind of home edition (and very slimmed-down) of cult PS Korg Series " 

 Main Data 

Korg Lambda



Company: Korg
Model: Lambda ES-50
Class: Synthesizer 
Keyboard: 49 keys, Non-weighted
Dates: 1979
Country: Japan
Weight: 15kg 
Dimensions: 824 x 127 x 497mm
Price: 800€

Display: none
Technology: analog
Polyphony: full (49)
Multitimbric: 1 part
Oscillator: 3 VCO
Effect: ensemble, which is chorus + tremolo
Memory: 9 preset sounds
Midi: none
CV-gate: trigger out
PSU: internal
IC:  S50241

49 keys with no velocity. Left a +/2 semitones pitchbender which acts also as chorus rate

Rear panel connectors:
-Sustain pedalswitch  input (damper)
-Expression CV input 0 / +5V can be set to section 1 /2 /1+2
-switch trigger keyboard out
-Headphones out
-Stereo outputs
- mix out




none

- No official VST plugin


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 The Lambda In details 

Lambda

VOICE Top Octave Generators generates 3 detunable oscillators (TUNE A / B)   + The divide-down IC Mostek S50241 (or M082B1)  is  a 13 Note Top Octave Synthesizer DC (DIP16).  

It may sound like a classic  paraphonic structure, but each note have 2 VCA unlike classic string machines (96!!)

Polyphony

Fully polyphonic based on divide-down technology

Oscillator

3 detunable oscillator (gernal main + A / B) 

VCA

Each note features 2 VCA  with no "retrigger" effect from classic divide-down keyboards

Effect

A Stereo BBD sounds can be added to either percussive and/or ensemble sound

lambda

Presets controls

Sounds are mainly organized into 2 categories: ensemble and percussive.

Ensemble

A- Percussive group

This group uses only 2 VCO with a sustain option with FAST/SLOW knobs plus a Tremolo effect on VCA. 
Presets are:  Electric Piano, Clavi, Piano and Harmonics

Mobirise

B- Ensemble group

This group uses up to 3 VCO. Organ have no control, Brass have separate cutoff option. The 3 others (chorus+ strings 1/2) have special "Attack Release variable" with 2 control knobs for Attack and Release segments.  Presets are: Brass, Organ, Chorus, String and String2.

Our Verdict 

"Very lush sounds! choir and strings are totally vintage sounds! highly recommanded! " 

Sound 
quality

Interface

Build
 quality

Rarity

Quality / 
price

Overall

CONS

- now pricey
- may need overhaul

PROS

-sounds
- vintage classic

Are you a LAMBDA user? do you like it? You do not agree with our review?  Let us know in the comment field just below 

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88 out of 100 based on 1 user ratings
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