Back in April of 2017, Sound Semiconductor announced the production of the SSI-2044 Four Pole Voltage Controlled Filter, "an improved re-issue of the SSM2044 that many believe to be the best sounding synthesizer filter chip ever produced. Developed by original SSM2044 designer Dave Rossum - known for his many electronic music contributions - the SSI2144 utilizes modern process technology for high reliability and low cost. Improvements include lower noise and control feedthrough, better performance of the resonance control circuit, and pin connections optimized for PCB layout. Preservation of the SSM2044's coveted sonic characteristics - a key project requirement - were achieved."
Although the new chip has been featured in DIY designs posted here and here, I believe the new DSI Sequential Prophet X is the first full-blown production synthesizer to use the new chip.
via Kraft Music: "SSI-2044 just became available last year, likely around when initial designs for Sequential Prophet X were being drawn up, and thus to our knowledge hasn't been used in any other mass-produced modern instruments, but given its progenitor's legacy it seems likely that Prophet X will have no shortage of the coveted, filter-derived character found in the vintage SCI samplers as well as the products that used SSM2044."
This one was spotted and sent in via Soviet Space Child.
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