CHORD M-scaler and Hugo 2 Listening Tests
Conveniently, the switch between bypass and 2X upsampling was seamless. So I used that to perform listening tests. I say some because the button cycles to higher rates and there, it causes a glitch/pause which completely throws off your mind. Going by forward mode of bypass to 2X, I detected no difference at all. Nothing changes as far as tonality, soundstage, etc. I captured a couple of samples for you to listen as well:
Shared with Dropbox
www.dropbox.com
Shared with Dropbox
www.dropbox.com
You can listen right in the dropbox or download them. If you are sure there is a difference, go ahead and say which one is M-scaler bypass and which is 2X.