help! no sound

Hi Audiogoners-

I am just hooking my stereo up after several months of inactivity during a renovation project.    I run a bnc out from my cd player to a Schiit bifrost (using adapter there for bnc).  I have RCA cables to the Lyr 2 amp.  When I play the cd player I get no sound.  (The cd player is producing sound through the speakers.)

This set up worked before and I am mystified.  Any idea what's going on?  Should I sent the LYR 2 back to Schiit for a repair?  Or is this user error?

Thanks for any insight!

Margot