Tx-NR3009 Soundfield_Input Evaluations.xls 36k .xls file
Thanks for your interest. I have attached the spreadsheet with the results of my evaluation. Even though you don't have a Front Height configuration, there are still plenty of of other modes in which I experienced distorted audio. Note the comparison columns on the right side of the spreadsheet - showing results when I tested the same configurations with an analog input while playing a CD on a DVD player.
If you don't mind, please provide the serial number of your unit. The two units I tested had serial numbers which were close together.
Regarding firmware, one unit was tested with the default firmware - the other one after downloading the firmware update. Same result regardless of the firmware iteration.
Looking forward to your report.