Neither receiver managed to convince me as the Marantz 1605 !! Sonically a miracle. So "slim" and yet so much power.
I can not detect any deficiencies or problems in terms of connectivity (possibly due to the latest firmware).
Airplay, WLAN and Bluetooth (iPhone 5s and iPad 3) is functioning properly.
The structure of the menu, I find it very successful and catchy. But that's a matter of taste.
But who takes the poor had previously sure not many other receivers. Was the Sony and the Harman much worse!
The build quality is 1a as usual. Sure, the knobs are not solid metal, it just change some things, unfortunately for the worse. In spite of all the AV makes a top quality impression and give a great feel to the touch.
At first in the race were:
Yamaha RX-V577
Harman AVR 171
Marantz NR1605
With Yamaha sound is good, the processing I found insufficient.
The HK is no longer of what was HK times, unfortunately. He can what I found very weak not even in standby HDMI loop through.
Then the bright spot! Unfortunately, the most expensive told me to best.
Bottom line, I would argue:
With Marantz you get what you pay for even the!
Buy recommendation!