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Yamaha | GS1 | 
        
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). | 
| Brand | Yamaha | 
| Model | GS1 | 
| Device | Synth | 
| Type | Keys | 
| Engine Type | Digital | 
| Engine | FM | 
| Voices (max) | 16 | 
| Multitimbral | 2 | 
| Oscillators | 4 | 
| LFO | 1 Vibrato | 
| Engine Detailed | 4op FM | 
| Filter (VCF) | EQ band pass and low/high shelving (Bass Middle Treble) | 
| FX | Chorus, tremolo | 
| Memory | 16 presets | 
| Keys | 88 | 
| Key type | Keys | 
| Velocity | Y | 
| Aftertouch | Poly | 
| Produced: | 1981 | 
| 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. | |||






