Part yesterday, part today: finished stuffing the eXStata amp pcbs. Started mocking it all up in a potential chassis and it looks promising but may require non-conventional mounting of the transformer. :S
Also took the EAD DAC pcb out of the chassis and removed what was hopefully the offending, buzzing transformer. The replacement trafo should arrive either tomorrow or Tuesday, assuming the USPS isn't in full on panic mode. This was way easier than expected although one fail point is awarded to EAD for putting a mounting screw below a daughter board in a nearly inaccessible location.