<div dir="ltr">Hey,<div><br></div><div>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. </div><div><br></div><div><a href="https://www.cabintechglobal.com/pdf/ALFA_RPAR_AS3397.pdf">https://www.cabintechglobal.com/pdf/ALFA_RPAR_AS3397.pdf</a><br></div><div><br></div><div><a href="https://en.audiofanzine.com/analog-synth-rack-sound-module/dave-smith-instruments/tetra/medias/pictures/#id:101054">https://en.audiofanzine.com/analog-synth-rack-sound-module/dave-smith-instruments/tetra/medias/pictures/#id:101054</a><br></div><div><br></div><div>This post here could also be helpful: <a href="https://modwiggler.com/forum/viewtopic.php?p=3928671#p3928671">https://modwiggler.com/forum/viewtopic.php?p=3928671#p3928671</a></div><div><br></div><div>Didn‘t know that the Marion MS1215 was used in the Evolver too. Identical to the PA397? (<a href="https://www.ssmcurtis.com/2002/10/14/evolver/">https://www.ssmcurtis.com/2002/10/14/evolver/</a>).</div><div><br></div><div>Best, m</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">Am Di., 10. März 2026 um 19:15 Uhr schrieb Florian Anwander via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">Hello,<br>
<br>
a friend asked me to have a look at his DSI Evolver Desktop. I did a <br>
search on the web but did not find any service manual for this synth or <br>
datasheet of the PA397 datasheet or at least pinout of the IC. Does <br>
anyone have info on this? Is the Alfa RPAR AS3397 compatible?<br>
<br>
Best regards<br>
<br>
Florian<br>
<br>
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