Read Our Full Review of the Onkyo TX-NR646


As 2015 meanders along, we’re starting to see more manufacturers unveil their AV receiver offerings for 2015. The big feature this year appears to be HDCP 2.2. Last year manufacturers were reluctant to incorporate the new protocol in their receivers, however this year’s a different story. Both Yamaha and Pioneer have showed us new receivers that support the new copy protection standard and now we can add Onkyo to that list as well. The Onkyo TX-NR646 and the TX-NR747 both will offer support for HDCP 2.2 Copy Protection which means they’re well prepared for the onslaught of 4K. Below we’ve outlined a few of the key features of each.


Onkyo TX-NR646 and 747

Onkyo TX-NR646

Onkyo TX-NR646


The specs of the 7.2 Channel Onkyo TX-NR646 and 747 are pretty impressive. Onkyo has the 646 rated at a generous 170 watts per channel and the 747 has a little more power at 175 watts.


Connection wise, both include an impressive eight HDMI 2.0a inputs and two outputs. The two outputs and three of the HDMI inputs support HDCP 2.2 copy protection which means both receivers are ready for that 4K Ultra HD TV you’ve been eyeballing at Best Buy.

Onkyo TX-NR747

Onkyo TX-NR747

These amps also support Dolby’s new Atmos format as well as DTS:X. For sound processing they include 32bit Hi-Grade DACs making them ideally suited to handle all sorts of audio files such as MP3, WMA, WMA Lossless, FLAC, WAV, OggVorbis, AAC, Apple Lossless, DSD 5.6 MHz, LPCM, and Dolby TrueHD.


WiFi and Bluetooth are included in both receivers. AirPlay is also making its first appearance on Onkyo amps this year without the use of a dongle or add-on which is a pleasant surprise. The one notable difference between the two receivers, is that the Onkyo 747 is THX-Select 2 Certified. Other than that there’s not a huge difference between the 646 and 747.


The Onkyo TX-NR646 is expected to hit store early June with an MSRP of $699 and the 747 should be available late June with an MSRP of $999.


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