Quad oscillator, but all oscillators use the same waveform.
Architecture Class: Conventional (subtractive).
Ebay Description:
The Kawai/Teisco SX-400 is a 49 key pressure sensitive monophonic synthesizer, featuring 4 oscillators (saw/pulse/triangle/noise waveforms), a resonant low pass analog filter, a high pass filter, dual ADSR envelopes, dual LFOs (saw/triangle/square waveforms), portamento/glissando, filter input, and CV/gate inputs.
Physical
Form Factor
Dimensions
Weight
Audio Input
Audio Output
Communication Port
Control Input
Control Output
Switch Input
Power
49 keys
W:945mm
D:510mm
H:155mm
22kg
filter
stereo
no
CV (1V/oct)
gate
pedal
no
no
AC (10W)
Interface
Compatibility
Multitimbral Memory
Program Memory
External Storage
External Programming
UI Input
UI Output
-
N/A
preset:8
user:8
no
no
sliders/switches
LED
Architecture
Multitimbral
Polyphony
Unison
Architecture
no
4osc:1
2osc:2
1osc:4
no
VCO->VCF->VCA->HPF
Output
Effects
Pan Modulator
Volume Modulator
Headphone
chorus
no
EGII
LFOI
pedal
yes
Control
Arpeggiator
Arpeggiator External
Sequencer
Sequencer Memory
Sequencer External
Continuous
Program Change
no
N/A
no
N/A
N/A
BendLever
no
Keyboard
Key Pressure
Chord Memory
External Control
External Sustain
Key Scaling
Velocity Curves
Routed to pitch, filter, LFO (to filter and/or pitch)