Thank you for the links. The issues described in those posts seem to be power related (clicks, pops and buzz).  My experience is somewhat different in that it was dominated by a typical ground hum.  Admittedly, there were some microphonics as well, but they were eliminated with a Furman Elite...

Hello and thank you for your reply.   I spoke to Schiit regarding this issue and they felt that it was a cable to amp issue, since the amp is quiet without the cable attached.  I have also spoken to the creator of the cable, and it was felt that the issue is related to the absence of a ground...

I recently purchased an AK240 and a Schlit Mjolnir amp that are connected via Moon Audio balanced cables (2.5mm TRRS to dual XLRs) and auditioned via Audeze LCD-3 (Moon V3 cables).  I immediately became aware of RFI and what appeared to be a ground hum when the volume control was advanced beyond...