Devialet 400 owners - In need of help setting up please

[petrik]

UPDATE: I managed to make it work. I now run my Devialet with my Marantz as part of my home theater setup.
I still have one issue though:

When I configure LINE 1 on the Dev to "pass-through" (so that I can control the volume with my Marantz, the front speakers are MUCH lower in volume than the center and surrounds, I can barely hear them.
When I cancel "pass-through", I can increase the volume on the Dev and they sound good.

Any idea what I am doing wrong?

Thanks!

You could check following things:
1) Is the "max level" set up correctly on your LINE 1 input? I have set mine to 1.5 Vrms but I don't know is that a good value for your Marantz.
2) You can increase pass-through volume on Devialet. You can do it in the configurator. I think I have set it to -15.
3) Increase volume for main channels in Marantz.
4) Decrease volume for all other channels in Marantz.