hi i have the usa onkyo 5009 amp i want to do 11.1 the amp does 9.2 i was told by a onkyo technitian that if i add an external 2 channel reciever i could then make it 11.2 channels by putting a optical cable from the optical out of the 5009 to the optical input of the 2 channel reciever is this correct would it work if so could anybody please recomend a 2 channel reciever that i could connect to the onkyo 5009 to give me 11.1 the onkyo technitian recommended the 2 channel stereo onkyo cr-545 reciever but i noticed it has no optical inputs i need a 2 channel reciever that has optical inputs and has pre amp inputs need help asap please