Schematics are here
http://www.synthfool.com/docs/SequentialCircuits/Pro_One/
But really need to look at the datasheet of CEM3320.
Pro 1 equivalent circuit with short description is a bit down this page:
https://electricdruid.net/cem3320-filter-designs/
I don't really know how to read that, but I'd say the Pro 1 is not an ARP with their sealed mystery components (yes, the ARP SMD reissue is pretty close but does indeed sound different).
I'd try the cheapest 150p caps I can get and then audition against higher quality 'poly capacitor' -- and then decide and call it a day.
[added] Also no guarantee that the CEM3320 and V3320 do behave exactly the same.[/added]
http://www.synthfool.com/docs/SequentialCircuits/Pro_One/
But really need to look at the datasheet of CEM3320.
Pro 1 equivalent circuit with short description is a bit down this page:
https://electricdruid.net/cem3320-filter-designs/
I don't really know how to read that, but I'd say the Pro 1 is not an ARP with their sealed mystery components (yes, the ARP SMD reissue is pretty close but does indeed sound different).
I'd try the cheapest 150p caps I can get and then audition against higher quality 'poly capacitor' -- and then decide and call it a day.
[added] Also no guarantee that the CEM3320 and V3320 do behave exactly the same.[/added]
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