[sdiy] Looking for info on the DSI PA397

[Maffez Synthmods]

Hey,

I don‘t think that there are any PA397 datasheets floating about publicly
but by the looks of it (using a Tetra PCB), the AS3397 could fit.

https://www.cabintechglobal.com/pdf/ALFA_RPAR_AS3397.pdf

https://en.audiofanzine.com/analog-synth-rack-sound-module/dave-smith-instruments/tetra/medias/pictures/#id:101054

This post here could also be helpful:
https://modwiggler.com/forum/viewtopic.php?p=3928671#p3928671

Didn‘t know that the Marion MS1215 was used in the Evolver too. Identical
to the PA397? (https://www.ssmcurtis.com/2002/10/14/evolver/).

Best, m

Am Di., 10. März 2026 um 19:15 Uhr schrieb Florian Anwander via Synth-diy <
synth-diy at synth-diy.org>:

> Hello,
>
> a friend asked me to have a look at his DSI Evolver Desktop. I did a
> search on the web but did not find any service manual for this synth or
> datasheet of the PA397 datasheet or at least pinout of the IC. Does
> anyone have info on this? Is the Alfa RPAR AS3397 compatible?
>
> Best regards
>
> Florian
>
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