Pronunciation in Polish "es" = "S." = "s" . Male voice.  IPA  [ɛs]
Piotr Nater
<p>LibriVox
<a class="external free" href="https://commons.wikimedia.org/wiki/File:Lalkavol1_01_prus.ogg">https://commons.wikimedia.org/wiki/File:Lalkavol1_01_prus.ogg</a>
</p>
section: 00:26.640 — 00:26.840 (User:VSL56)