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Teisco Synthesizer SX-400

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Description
Teisco released the 4 voice SX-400 in 1981 which features stereo sound and 16 preset memories. 8 of which are user memories. A nice feature of the SX-400 is aftertouch and it's pitch knobs that can have multiple destinations simultaneously. It also features a Chorus Effect and offers CV gate control.

The unit also has stereo output and can be played in one of 4 modes. Quad: one VCO can be assigned to one key at a time and played as in a chord.
Dual: 2 VCO's are assigned to one key at a time and can be played as 4 notes for a thicker sound. Mono: 4 VCO's are assigned to one key at time but only one voice can be heard at a time.

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Technical Specifications
Type: Analog
Synthesis: Subtractive
Oscillators: 1
Waveforms: Pulse, Pulse Variable, Saw Down, Saw Up, Sub Oscillator, Triangle, White Noise
Osc Modulation: After Touch, Envelope, Knob, LFO
Envelopes: 2
Evelope Paramerters: Attack, Decay, Sustain, Release
Filters: 2
Types: 24dB Slope (4-pole), High Pass, Low Pass, Resonance
Filter Modulation: After Touch, Knob, LFO
LFO: 2
LFO Parameters: Saw Up, Saw Down, Sine, Triangle
Polyphony & Tuning
Polyphony: 4
Timbrality: 1
Tuning: Standard
Modes: Duophonic, Mono, Polyphonic
Patches
Patches RAM: 8
Patches ROM: 8
Storage: Internal
Editing: CV
Effects
Chorus
Case
Case: Keyboard
Case Details: Solid wood and metal casing
Keyboard: 49 keys
Controls: Buttons, Faders, Knobs, Switches
Dimensions (WxDxH): 155 mm x 945 mm x 510 mm
Weight: 22 kg
Connections
Audio Output Connections: 1/4" Phone Jack, Stereo Main, Stereo Headphone
Audio Output Count: 3
CV Ports: CV IN, CV OUT
Power: 25 watts
Production
Year Released: 1981
Year Discontinued: 1982
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Pricing
Used Price: $300-$1800 - convert
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