If you mean fully balance = dual differential from input to output you can forget it. No way you can get that for <$1,000. For two channel it may be possible though imo still unlikely, definitely not for all 7 channels.
Especially if Matthew got his info on the key parts from a reliable source. In the review he said this thing has the Burr Brown PCM1794a DAC and OPA1652.
Can you imagine 14 pieces of the PCA1794 and at least 7 pieces of the rather expensive OPA1612?
There were good reasons why you hated Denon AVP listed for $7,500.
So in this case the fully balance probably just mean it is not a fake balance just done to allow for connection to loads with balanced connectors only.