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SX-WSA1 - Image 1

SX-WSA1

KeyboardDigitalPolyphonic

Back in the late '90s, this synth pioneered acoustic modeling by pairing PCM waveform drivers with DSP resonators, letting you pluck a guitar driver into a membrane body for sounds no sample pack could touch.

Its core is a 61-key velocity- and aftertouch-sensitive keyboard with a fast, spongey action that's surprisingly responsive for expressive playing. You get 64-note polyphony across 32 MIDI channels, blending up to four layered tones from 307 drivers and 63 resonators like strings, flares, or plates, all shaped by pitch, comb/resonant filters, amp envelopes, and a shared LFO. Controls shine through a big 320x240 graphic LCD for intuitive editing, realtime knobs for driver/resonator tweaks like position and muting, digital drawbars, and a 16-track sequencer holding 47,000 notes with SMF floppy playback. Three DSP effect blocks offer 43 algorithms plus 12 reverbs, feeding dual stereo outputs and full MIDI I/O for seamless integration.

Players love its orchestra-in-a-box potential, crafting thick pads, realistic acoustics, or wild hybrids that evolve with your touch—though presets can feel thin until you dial in some resonator crosslinking. A rare gem for sound designers chasing organic depth without polyphony limits.

Released

Unknown

Status

Discontinued

Synthesizer
Format
Keyboard
Type
Physical Modeling, Sample-based
Internal Battery
No
Voice
A/D
Digital
Polyphony
Polyphonic
Oscillators
-
Oscillator Type
-
Voices
64
Filter
Lowpass
Envelopes
-
LFO
1
Effects
56 DSP effects
Expression
Aftertouch
Monophonic
Velocity
Yes
MPE
No
Additional
-
Software
-
I/O
Audio In
-
Audio Out
4x line-level (2 stereo pairs)
Headphone
-
MIDI
In, Out, Thru
MIDI Type
DIN (5-pin)
Ports
-
Wi-Fi
No
Workflow
Arpeggiator
-
Sequencer
Yes
Mod Matrix
-
Memory
256 preset sounds, 256 user sounds
Measurements
Dimensions
-
Weight
-
Last updated Mar 23, 2026