Mateored, you may have reached the flatter part of the cost-vs-improvement curve.
Maybe the only comparison between Wadia/Anthem DACs you can make is in true 2-channel mode; turn off your sub and your surrounds, and make sure the two fronts are crossed over below the bottom end of their frequency response.
Another possibility is to purchase a 2-channel pre-amp that also has bass management in the analog domain. Anthem has a great pre-amp that does this, the TLP-1, but this option adds another unit in the signal path and really wouldn't be an apples-to-apples comparison of DACs...unless you used a line-level analog connection from your receiver into the TLP-1...
Maybe the only comparison between Wadia/Anthem DACs you can make is in true 2-channel mode; turn off your sub and your surrounds, and make sure the two fronts are crossed over below the bottom end of their frequency response.
Another possibility is to purchase a 2-channel pre-amp that also has bass management in the analog domain. Anthem has a great pre-amp that does this, the TLP-1, but this option adds another unit in the signal path and really wouldn't be an apples-to-apples comparison of DACs...unless you used a line-level analog connection from your receiver into the TLP-1...