Synth DB

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Maplin | 5600S


An Australian designer, Trevor G Marshall, created a kit (half-analog, half-digital) called the ETI 4600. The sounds were published in October 1973 in the Australian magazine "Electronics Today International". The plans were bought by the English company Maplin Electronics, which marketed Maplin 5600 what was available in a wooden frame with a keyboard.

The sound of the instrument does unique and really fat, and the semi modular architecture give you endless possibilities of your creativity.


- Semi modular design 
- 30x30 pinmatrix section. 
- 4 oscillator module with 6 waveform+sync
- 1 noise generator module adjustable from Pink to White noise
- 1 LFO+S&H module
- 5 Mixer module
- 1 Envelope generator module
- 2 Transient generator module
- 2 Switchable LP-HP Filter module
- 2 Switchable Amp+Ringmodulator module
- 1 Phase module
- 1 Reverb/Phase module 
- 2 External input module
- 1 Foot pedal module
- 1 Foot switch module
- 1 Echo module
- 1 Stereo Output module
- 1 Joystick controller module
- Full size 48 key monophonic keyboard (digital controlled)
- 19 pin for pin matrix board 
Engine TypeAnalog
Voices (max)1
LFO1 Sample & Hold, Sine
Engine Detailed4 VCO, Pink Noise, Pulse Variable, Saw Down, Saw Up, Sine, Square, Triangle, White Noise
Filter (VCF)2 24dB Slope (4-pole), Low Pass, Resonance
Envelope (VCA)1 x ADHD2, 1 x Transient Generator w/ 7 controls: Start Level (+ & -), Delay 1, Slope 1, Hold Level (+ & -), Hold Delay, Slope 2, and Final Level (+ & -).
FXReverb, Phase Shifter, Echo
Key typeKeys
CV-gateCV/Gate in
Produced:1979 - 1979
Legend: Obvious Y: Yes, N: No, N/A: Not Applicable
VCO Voltage Controlled Oscillator DCO Digital Controlled Oscillator
LFO Low Frequency Oscillator Sub Sub Oscillator
VCF Voltage Controlled Filter VCA Voltage Controlled Amplifier
Velocity As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key. Aftertouch Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.

Manuals, patches etc.


If you like to discuss or talk about synths in all forms (including VST and modular), you are welcome to join the Facebook group "The Hard, The Soft and The Modular".

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