Passthrough output power loss?

[adhesiv]

Hey everyone,

With my D-Premier and now upgraded 250 I had my Front L/R pre-out channels sent from my receiver to the Dev and set that input to Bypass so the receiver could control the volume and the amp would run at fixed output.

It worked great until about a week ago...all of a sudden the front L/R channels barely get any gain on thinks input and I had to increase the levels a full 12db and reduce the center channel by 12db just to get close to matched levels and so they'd output anything remotely audible.

I also noticed during this process that even in Bypass mode, increasing the volume dial on the Dev itself will impact the Bass output (I have a sub out in use).

I thought maybe the receiver had an issue but I've tested the preouts with another amp and it works just fine. All other sources on the Dev output just fine as well (AIR, Mac mini over USB, external DAC analog out)

Is there something I can check to see if there's a problem or any configuration that might cause this?

Setup:
Marantz NR1602 L/R preout > Devialet 250 (Input setup for passthrough) > KEF LS50
SAM enabled
Input default volume -30db


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