Yamaha RX-A670 vs Yamaha RX-A770 Other comparison
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|Number of channels||7 channels||7 channels|
|RMS power||80 watts||95 watts|
|THD||0.09 %||0.06 %|
|Min. impedance||6 ohms||4 ohms|
|USB - Iphone|
Functionalities & Surround
|Standby Pass through|
|HDMI inputs||4 inputs||6 inputs|
|AV inputs||7 inputs||5 inputs|
|Audio inputs||4 inputs||9 inputs|
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Comparison of Yamaha RX-A670 vs Yamaha RX-A770 Both AV receivers have the same number of channels of 7 and the Yamaha RX-A670 has a lower RMS power (80) compared to the Yamaha RX-A770. The Yamaha RX-A670 has a THD of 0.09 %, whereas the Yamaha RX-A770 has a THD of 0.06 %, THD being the total harmonic distortion, a measure of the difference between the incoming sound entering the receiver and the output, a lower THD being better. Morevoer, the Yamaha RX-A670 and the Yamaha RX-A770 have a minimum impedance of 6 ohms and 4 ohms respectively.
The Yamaha RX-A670 can be connected to the internet, it can connect through bluetooth, the Yamaha RX-A670 is unfortunately not MHL-compatible, and it does not have an integrated tuner. Concerning the connectivity and the surround system, the Yamaha RX-A670 has 4 HDMI inputs, and it has the dolby ATMOS sound system, which is the latest audio format, giving a three-dimensional effect to the produced sounds and it can be connected to Iphones, Ipads and other Apple products via Airplay.
The Yamaha RX-A770 can be connected to the internet, it can connect through bluetooth, the Yamaha RX-A770 is unfortunately not MHL-compatible, yet it does not have an integrated tuner. Concerning the connectivity and the surround system, the Yamaha RX-A770 has 6 HDMI inputs and it has the dolby ATMOS.