It's a shame there are not very many devices working in audio range (sub 100khz).
You still have to scout eBay for a device from the 80s-90s and they are still expensive as hell.
http://kokkinizita.linuxaudio.org/linuxaudio/
Look for Jaaa, near the end of the page.
Also interesting, although semi-unknown:
Yeah, the niche seems to be filled by software and either sound cards or equivalent USB acquisition hardware.