I am in my 2nd week of ownership of the RX-A1020 I have been using the Zone 2 option so far with out problems. The external amp is a Yamaha RX-655. I've noticed today that when I enable zone 2 or party mode now the external amp shuts down. Checked speaker cables - OK - no blown fuses, check RCA patch cords - OK - cannot think of what could be causing this. It seems to shut down only on the input which is on the external receiver I used AUdio 1 then changed to AV 5 still shuts down. I looks as though the signal from the A1020 shuts the external down. I am puzzled, Oh I've also removed the power cable from the main unit to force a reset. still no change. Anyone care to shine a light on this new behavior -- thanks Dan