free amp template

Korg 770

PRICE: 1500€ / manual / schematics (1976)


Overview and oscillator

KEYBOARD 32 keys  F1 -C3 keyboard with no velocity, one of the first analog "budget"  with simple function in a very clear organisation of the functions. Of course wood sides! like many synth from this era, the 770 lacks wheels / pitchbender 

Oscillator Subtractive synthesis analog mono synthesizer with 2 VCO and portamento mode:
- VCO1: octave range from 64' to  2', tuning +/- 5 semitones, shapes  triangle, square, saw, pulse, pulse with variable width. Also special external mode (see filter)
- VCO2:  octave range from 16' to  1, tuning +/- 5 semitones, shapes  saw, Ringmodulator 1/2, Scale Noise, Pink + White Noise.


Filter, EG and LFO

FILTER The filter is analog (Traveler) allows flexible and sofisticated LPF, BPF and HPF with "BRIGHT" which is the resonance.

ENVELOPE  single EG generator " AR" Attack e Singing Level, the Range is based on 3 livel  presets

Single delayed triangle modulator with variable depth and reaches a pretty high frequency for some FM modulation on pitch. Also can acts as a simple VCA vibrato.
770 synth

korg 770 Technical Data

  • KEYBOARD: F-C 32 Keys
  • VCO-1: Scale (64', 32', 16', 8', 4', 2'), Waveform (triangle, square, sawtooth, pulse, PWM, External Signal), Pitch Control, Vibrato Switch (Normal/Off/Delay), Vibrato Depth, Vibrato Speed, Pitch Bend Switch (Up/Off/Down), Delay Time, Bend Speed, Portmento Switch (Fixed/Off/Control), Portamento Control
  • VCF x2: Traveler (High Pass, Low Pass), Bright Selector, Expand Switches x2 (LP+HP, Off/Normal/Reverse), FcM Switch
  • VCA + ENVELOPE GENERATOR: Attack Time, Singing Level, Range Selector, Sustain Selector, Envelope Mode Selector, Trigger Mode Selector
  • LFO: Speed Control (Repeat+FcM)
  • VCO-2: Coarse Tuning (16'-1'), Fine Tuning, Mode Selector (sawtooth, Ring 1, 2, Scale Noise, Pink Noise, White Noise)
  • TOTAL: Mixing Selector, Mixing Volume, Power Switch/Volume
  • DIMENSIONS: 560(W) x 195(H) x 340(D) mm
  • WEIGHT: 9 kg
  • ACCESSORIES: Connection Cord, Dust Cover
  • POWER CONSUMPTION: Voltage (Local Voltage, 50/60Hz), Wattage (15W)
  • korg 770

    Do you use this machine ? do you like it? You do not agree with our review?  Let us know in the comment field just below 



    Audio demo and video 

    korg 770 korg 770
    84 out of 100 based on 1 user ratings
    1200 to 1700 from 1 sellers Sellers: