Looking for a good A/B switcher for blind listening tests

[Chromatischism]

However it's done. The right software could also just output what you tell it to, like two right channels, and do the channel muting, skipping needing outboard DACs - I'm just not sure if that exists. Trying to think outside the box - or is that inside?

 

[Rja4000]

I ended up buying the AVA ABX Switcher.

Let us know if and how you use it.
Would you gave a chance to measure-check it ?
Is the operation silent ?
How do you balance klvels ?