Accuphase dac 60

Maybe swap the selection in the front of the unit? Sometimes it is not clear which one is referred to as "1" or "2". Just a thought.

If this does not work, maybe you swap the DAC module into the remaining slot, and try that.

Also, as stupid as this sounds, I would make sure you have properly inserted / connected the module into its slot.

As a last resort, have you tried to communicate with Accuphase directly?

Best of luck.

Plenty of good DACs out there in your price range. For the sake of simplicity, as it sounds you are just getting started with digital & streaming, I recommend you buy a DAC with a streamer built in. Like LUMIN, or Cary DMS series, just an example 

Several DACs available in different price ranges