+ PKG_PATH=/nfs/packages/NetBSD/trunk/x86_64/All /usr/tools/sbin/pkg_add -K /usr/pkg/pkgdb digest-20220214 x11-links-1.35 mktools-20220614 pkgconf-1.9.4 cwrappers-20220403 checkperms-1.12 SDL2_mixer-2.0.4nb11 SDL2-2.26.2 SDL2_ttf-2.20.1nb2 SDL2_image-2.0.5nb9 hicolor-icon-theme-0.17nb1 png-1.6.39 SDL2_net-2.2.0nb1 libxml2-2.10.3nb2 curl-7.87.0
pkg_add: package `mktools-20220614' already recorded as installed
pkg_add: package `cwrappers-20220403' already recorded as installed
libffi-3.4.4: registering info file /usr/pkg/info/libffi.info
fftw-3.3.10nb1: registering info file /usr/pkg/info/fftw3.info
libgpg-error-1.46: registering info file /usr/pkg/info/gpgrt.info
libgcrypt-1.10.1: registering info file /usr/pkg/info/gcrypt.info
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.etc.sgml to /usr/pkg/etc/sgml/catalog
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.etc.xml to /usr/pkg/etc/xml/catalog
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.share.sgml to /usr/pkg/share/sgml/catalog
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.share.xml to /usr/pkg/share/xml/catalog
pkg_add: package `SDL2-2.26.2' was already installed as dependency, now marked as installed manually
pkg_add: package `png-1.6.39' was already installed as dependency, now marked as installed manually
pkg_add: package `libxml2-2.10.3nb2' was already installed as dependency, now marked as installed manually
libunistring-1.1: registering info file /usr/pkg/info/libunistring.info
libidn2-2.3.4: registering info file /usr/pkg/info/libidn2.info
===========================================================================
$NetBSD: MESSAGE.NetBSD,v 1.3 2021/09/08 19:19:19 nia Exp $

To start JACK on NetBSD:

$ jackd -Sr -d sun

If you have an external USB mic:

$ jackd -Sr -d sun -P /dev/audio -C /dev/audio1 -i 1

===========================================================================