DWGS
The first synthesizer that used DWGS was DW-6000. It had 8 waveforms in 64KB ROM and analog chorus, but no velocity.
EX-8000 is the rackmount version of DW-8000. MEX-8000 is the memory expander that stores 256 patches by SysEx.
According to Synrise site, there was the updated version called DW-8000 ACTION series. They had an external input for the digital delay.
KORG DW-6000 (1984)
KORG EX-8000 (1985)
KORG MEX-8000 (1985)
DW's digital editing interface (KORG called it Digital Access Control) is inherited from KORG's older digital/analog synths like POLY-61. DW-8000's digital delay is like POLY-800II (see POLY-800 page). While POLY-800II had maximal 1024ms delay time, DW-8000 has 512ms at max.
KORG gave DWGS waveforms to their romplers after M1. They are not DW's, but seem to be newly created waveforms.
KORG POLY-61 (1983)
KORG POLY-800II (1984)
Recently, KORG added DWGS not only to romplers but also to VA synths. MS2000 is the first one.
KORG M1 (1988)
KORG MS2000 (2000)
KORG DSS-1 is a 12-bit sampler with many synthetic features. It has 2DCO-1VCF architecture with digital delays, which resembles DW-8000. But DSS-1 has much more interesting features - oscillator sync, hand-drawing waveform, additive synthesis, bit-reduction, 4/2 pole filter, unison detune, two digital delay units, etc. It could have been interesting if DW-8000 was the waveform-preset version of DSS-1.
KORG DSS-1 (1984)
KAWAI K3 is the most close competitor with DW-8000. It has similar 2DCO-1VCF architecture, but it had 32 additive waveforms plus 1 user-definable additive waveform.
ENSONIQ ESQ-1 is another digital-wave/analog-filter synthesizer. It has 32 additive-recreated waveforms. It has 3DCO architecture with Sync and AM.
KAWAI K3 (1986)
It is said that Sequential crews learned much from DW-6000 in creating Prophet VS. It uses the similar synthesis engine that processes digital waveforms with an analog filter, but the new feature Vector Synthesis is added. Prophet-VS, PPG Wave, Waldorf Microwave, etc. can be seen as much evolved brothers of DW's digital-wave/analog-filter synthesis.
ENSONIQ ESQ-1 (1986)
Also CASIO FZ-1 may be related - it's a 16-bit sampler but it has also an additive oscillator. And I suspect its filter seems to be analog like CASIO HT-6000. At least, it's relatively easy to emulate DWGS with FZ.
Sequential Prophet VS (1986)
CASIO FZ-1 (1987)
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DW-8000
Deep Synthesis: Home10. 22. 2005