Schiit setup troubleshooting

First, just to make sure something simple isn't being overlooked, I assume you are connecting each speaker to the two positive output terminals of the corresponding amp, given that you are using the amps in mono mode. And I assume you have seen in the manual for the Freya S that it has a 60 second delay following turn-on.

Second, by any chance are the speakers AC powered (for example do they include a powered woofer), or do you have powered subwoofers connected to the amps? If so, the negative input of the powered speaker or sub may be grounding or excessively loading the signal on the positive output terminal of the amp to which it is connected, causing the amp to shut down.

Regards,
-- Al
 

@almarg The speakers are connected correctly. I was not aware of the start-up delay on the Freya S, but it has been running continuously since I powered it on last night. I do have a powered sub connected to the speaker terminals on the amps (correctly, as far as I am aware), but I have turned the sub off as I attempt to troubleshoot this issue.  The speakers are passive - Buchardt S400.

I would definitely try disconnecting the sub altogether.

If I understand correctly you are connecting the two amps to a single powered sub (i.e., both amps are connected to the same sub, with the sub providing speaker-level inputs for two channels). If so, it is likely that there is a ground path within the sub that is connecting one of the two positive output terminals of each amp (the output terminal of the amp that I presume is connected to a negative input terminal of the sub) to the corresponding positive output terminal of the other amp. Which could very likely account for the problem. And that path would exist even when the sub is turned off.

Regards,
-- Al

I'll give that a try when I get home this evening. Is there any possibility that using a single-ended input into the Freya (in this case the DAC), then outputting via balanced XLR to the amps could be the cause of the issue?