"Dry Out" Doesn't Work When Using Variax Input (POD HD PRO X)

[TweakGeek 0]

So today I discovered that the "Dry-Out" output on my POD HD PRO X doesn't work when I'm connected through Variax input. If I plug-in through the front "Guitar" input it'll work just fine.

 

Am I missing something here? perhaps some configuration in the menus that will allow me to mirror Variax dry input straight to the "dry-out" output on the back of my POD HD PRO X? 

 

I'm hoping to use this output aside from both the L-R outputs for a live setting. Thanks in advance for any replies.