Onkyo tx-nr646

700 Watt 7.2 Channel Audio/Video Receiver

  • Model: tx-nr646
  • Sku: TXNR646

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  • Dolby Atmos, Dolby TrueHD, DTS-HD Master Audio, DTS:X
  • 100 Watts x 7 Channels
  • 8 x HDMI-In And 2 x HDMI-Out
  • Built-In Wi-Fi, Bluetooth, And AirPlay
  • Satellite Radio Ready
  • AccuEQ Room Calibration
  • Advanced Music Optimizer DSP Technology

Product Overview↑ Back to Top

The Onkyo TX-NR646 7.2-Channel Network AV Receiver delivers wireless audio streaming and powerful multi-channel audio. This receiver features Onkyo's WRAT amplifier technology and delivers up to 100W per channel at 8 ohms for robust audio playback. Built-in AirPlay and Bluetooth allow you to wirelessly stream music from compatible audio sources such as computers, MP3 players, smartphones, and tablets. Onboard Wi-Fi and Ethernet connectivity gives you the ability to stream music from Internet radio sources and use DLNA technology to share content with compatible networked devices. Two Wi-Fi antennas are on the rear of the receiver for optimized signal range.
The Onkyo TX-NR646 has eight HDMI 2.0a inputs for interfacing audio and video sources, and the pass-through of 3D and 4K video sources. There's also a USB port for interfacing additional audio sources. Onkyo also offers a free remote app for controlling your receiver from a smartphone or tablet. Built-in high-resolution audio support allows you to take advantage of dynamic surround sound formats like DTS-HD Master Audio and Dolby TrueHD.


  'Owner's Manual'  
  'Specification Sheet'  

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Technical Specs ↑ Back to Top

Power Output 100 Watts per Channel
Internet Connection Ethernet / Wireless Built-In
Internet Radio Capable Pandora
Sirius Internet Radio
HDMI Inputs 8
HDMI Output 2
Digital Coaxial Input 1
Digital Optical Input 2
USB Input Yes
USB Location Rear
USB Ports 1
Station Presets 40
Dolby Digital Dolby Atmos
Dolby TrueHD
dts Listen DTS HD Master
RCA (Composite) Audio Input 7
RCA (Composite) Audio Output 1
RCA (Composite) Video Input 3
Component Input 2
Front Speaker (R/L) Out Yes
Center Speaker Out Yes
Surround Speaker (R/L) Out Yes
Subwoofer Out Yes
Satellite Radio Ready SiriusXM
Remote Control Yes


Height 6.8 in
Width 17.1 in
Weight 20 lbs 11.2 oz
Depth 13.0 in
Height 10.0 in
Width 16.5 in
Weight 26 lbs 3.2 oz
Depth 22.0 in

Package Contents

  • Indoor FM Antenna
  • AM Loop Antenna
  • Speaker Setup Microphone
  • Remote Control
  • 2 x AA Batteries

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