Satch
Audiotinkerer
While not strictly hifi (it's an exhibition about audio- and video integration and domotica) there were enough well-known brands to make this one worth visiting. I wrote a small review, unfortunately Dutch only. More interesting perhaps are the pics I took. Enjoy!
https://michielvanzaane.wordpress.com/2018/02/09/indrukwekkend-ik-bedoel-immersive-a-k-a-ise-2018/
https://michielvanzaane.wordpress.com/2018/02/09/indrukwekkend-ik-bedoel-immersive-a-k-a-ise-2018/