I have a couple of Nobsound switch, input output devices and all have been great for my use cases for them.
I have a passive pre-amp with volume control for my JBL 305s, and a 1in->4out switch for my tube amp switching, tied to my Airist R-2R DAC (the thing is awesome with tubes). I’ll try and get pics up tonight of the new setup.
@tjsgarden here is the picture of my current setup for switching to my Tube amps you can see it sitting on top of the THX-789: Headphones Battlestations