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GS1

Yamaha GS1

GS1
(image courtesy of Yamaha)

Released: 1981

MSRP: Y2,730,000

Synopsis:

Early FM polyphonic preset keyboard Architecture Class: FM.

Ebay Description:

The Yamaha GS1 is a pressure and velocity sensitive 88 key (16 voice, 4+4 operator) FM synthesizer, featuring vibrato, tremolo, EQ (low, mid, high), chorus, and 16 presets (presets loaded via card reader).

Physical

Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
88 keys W:1500mm(59in) D:832mm(32.75in) H:826mm(32.5in) 90kg(198.4lbs) no mix stereo:balanced/unbalanced no optional:MIDI optional:MIDI sustain tremolo chorus AC (95W)

Interface

Compatibility Multitimbral Memory Program Memory External Storage External Programming UI Input UI Output
GS1 GS2 shared preset:16 magnetic-strips:2 magnetic-strips no dedicated buttons/knobs LED

Architecture

Multitimbral Polyphony Unison Architecture
2 16 no [DCO->DCO]+[DCO->DCO] [DCO->DCO]+[DCO->DCO]

Output

Effects Pan Modulator Volume Modulator Headphone
chorus no pedal Tremolo Velocity yes

Control

Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
no N/A no N/A N/A no no

Keyboard

Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
poly no optional:MIDI pedal yes 1

Source

Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
Modulator1 digital sine - Modulator1EG no no no
Carrier1 digital sine - Carrier1EG Modulator1 Vibrato no
Modulator2 digital sine - Modulator1EG no no no
Carrier2 digital sine - Carrier1EG Modulator1 Vibrato no
Modulator3 digital sine - Modulator1EG no no no
Carrier3 digital sine - Carrier1EG Modulator1 Vibrato no
Modulator4 digital sine - Modulator1EG no no no
Carrier4 digital sine - Carrier1EG Modulator1 Vibrato no

Filter

Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
EQ analog ? no band pass and low/high shelving (Bass Middle Treble) no no no

Envelope

Name Level Rate Loop Polarity Trigger Level Modulator Rate Modulator
Modulator1EG ? ? no no key Aftertouch Velocity no
Carrier1EG ? ? no no key Aftertouch Velocity no
Modulator2EG ? ? no no key Aftertouch Velocity no
Carrier2EG ? ? no no key Aftertouch Velocity no
Modulator3EG ? ? no no key Aftertouch Velocity no
Carrier3EG ? ? no no key Aftertouch Velocity no
Modulator4EG ? ? no no key Aftertouch Velocity no
Carrier4EG ? ? no no key Aftertouch Velocity no

LFO

Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
Vibrato triangle? no no no no pedal no
Tremolo triangle? no no no no pedal no
FM Models
GS1 GS2 CE20 CE25 DX9 DX21 CX5M CX5MII
DX27 DX100 DX27S FB-01 DX11 TX81Z WT11 YS100
YS200 B200 DS55 TQ5 V50 DX7 DX1 TX816
TX116 TX7 DX5 DX7IID DX7IIFD DX7II-Centennial DX7S TX802
FS1R