Yamaha Aventage RX-A550 was introduced in 2015. It is equipped with 5 channel amplifier with 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 5.1 maximum channel processing. It passes 4K/60Hz and upscales up to 1080p video signal.
We evaluated the a/v receiver and gave 73 overall score out of 100. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.
For more details about the ranking please go to Evaluation section.
Here is a history of the series, where you can view and compare the main specifications of the receivers.
You can view their side-by-side comparison here: Yamaha RX-A680 vs RX-A670 vs RX-A660 vs RX-A550.