Onkyo TX-NR686 7.2-Channel Network A/V Receiver (2018)

Model: TX-NR686

Onkyo Warranty
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Input Sensitivity/Output Level and Impedance 1 Vp-p / 75 Ohms (component Y)0.7 Vp-p / 75 Ohms (component PB/CB, PR/CR)1 Vp-p / 75 Ohms (composite)
Component Video Frequency Response +0 dB, -3 dB

Tuner Section

Tuning Frequency Range FM: 87.5 to 107.9 MHzAM: 530 to 1710 kHz
FM/AM Preset Memory 40 stations


Calibration AccuEQ with AccuReflex
DTS DTS:X (5.2.2), DTS Neural:X, DTS-HD Master Audio
Dolby Dolby Atmos (5.2.2), Dolby TrueHD
DAC 384 kbps/32-bit

Packaging Info

Box Dimensions (LxWxH) 20.6 x 17.8 x 10.0"
Package Weight 27.0 lb


Dimensions (W x H x D) 17.1 x 6.8 x 14.9" / 435 x 173.5 x 379.5 mm
Weight 22 lb / 10 kg
Power Requirements 120 VAC, 60 Hz
Power Consumption Typical: 580 WNo Sound: 60 WStandby: 0.15 W


Outputs 2 x HDMI1 x stereo RCA Zone 22 x subwoofer pre-out1 x 1/4" / 6.35 mm headphone (front)
Other Interfaces 1 x Ethernet LAN1 x USB (5 V, 1 A)1 x 1/8" / 3.5 mm calibration microphone (front)1 x AM antenna1 x FM antenna
Speaker Connectors 9 x binding post pairs
Wi-Fi Dual-band 2.4 / 5 GHz IEEE 802.11a/b/g/n
AirPlay Yes
Bluetooth Version: 4.1 + LEProfiles: A2DP v1.2, AVRCP v1.3
Bi-Amp Capability Yes, for front speakers
Audio Return Channel (ARC) Yes (main out)
Inputs 7 x HDMI (1 front)2 x component video2 x composite video2 x optical TOSLINK1 x digital coaxial6 x stereo RCA1 x stereo RCA phono with ground screw1 x 1/8" / 3.5 mm aux (front)


Signal-to-Noise Ratio 106 dB (line, IHF-A)80 dB (phono, IHF-A)
Damping Factor Not specified by manufacturer
Amplifier Class Linear Class A/B
Tone Control Bass: ±10 dB, 90 HzTreble: ±10 dB, 7.5 kHz
Frequency Response 10 Hz to 100 kHz / +1 dB, -3 dB (Direct Mode)
Phono Overload 70 mV (MM, 1 kHz, 0.5%)
RCA Output Level and Impedance Subwoofer Pre-Out, Rated: 1 V / 470 OhmsZone 2 Line Out, Rated: 200 mV / 2.3 kOhms
Input Sensitivity and Impedance Line/Unbalanced: 200 mV / 47 kOhmsPhono/MM: 3.5 mV / 47 kOhms
THD & Noise 0.08% (20 Hz to 20 kHz, half power)
Dynamic Power per Channel 120 W (8 Ohms, front)210 W (4 Ohms, front)240 W (3 Ohms, front)
Power Output per Channel 100 W per channel @ 8 Ohms, 20 Hz to 20 kHz, 0.08% THD, 2-channels driven, FTC210 W per channel @ 6 Ohms, 1 kHz, 10% THD, 1-channel driven
Channels 7.2
Speaker Impedance 4 to 16 Ohms
Expert Reviews
Nerd techy.34815082
19 April 2018

High definition surround sound isn’t only a matter of having nice speakers. In the process of creating high quality audio, distortion can weasel its way into a signal at countless junctures.

User Reviews
1 day ago

I am new to surround systems and was a little nervous about setting up my system on my own. However the Onkyo was an absolute doddle to set up despite the amazing range of features available.

1 week ago

Just invested in a 5.1 system with the option of going atmos in the future.simon from the hull store hooked me up with the onkyo 686 and the monitor mass speaker package....amazing thank you again hope to see you soon with the atmos speaker upgrade.jon

3 weeks ago

It’s always fiddly setting up a new receiver... all those wires.... but having airplay and chrome cast on this box means I have a few less connections than my old box. And what a great sound!

3 weeks ago

I have always liked the Onkyo amplifiers and I had a bit of cash so I decided to upgrade I'm so glad I did the new 686 is spot on

30 June 2018

I bought this model few weeks back in change of a TX-NR616 and after connecting same speaker systems I can feel the difference in sound, before barely I could appreciate the fx from rear speakers whereas now I can feel more envolving sound.

22 June 2018

Partnered with Monitor Audio Bronze AV speakers and following a firmware update, upgrade of speaker cable and setup of main speakers using bi-amping it has great sound. Recent firmware now delivers "works with Sonos" which was easily setup. So overall really pleased.

10 June 2018

This onkyo replaced my older amp. The sound quality is even more amazing and so easy to set up and use.

9 June 2018

Great sounds and for myself a easy to navigate and complete UI and menu set. Highly customisable.

8 June 2018

JP I’m store set up a sound test and my decision was made.

5 June 2018

Went with some options, after talking with the RS team, decided on another Onkyo. Great d vision great recommendation, sound is amazing , everything into the onkyo ten out through Panasonic TV and Keff surround, it’s as good as being at the cinema. Thank you to RS,

Product Highlights
  • Up to 100W per Channel at 8 Ohms
  • AccuEQ Sound Calibration
  • HDR UHD Pass-Through
  • HDMI with Audio Return Channel
  • Supports Dolby Atmos & DTS:X
  • 7 x HDMI-In / 2 x HDMI-Out
  • Built-In Wi-Fi and Bluetooth
  • Chromecast built-in & Google Assistant
  • Apple AirPlay Connectivity
  • USB Connectivity
Average Expert Score
Average User Score
In The Box
  • Onkyo TX-NR686 7.2-Channel Network A/V Receiver
  • Remote Control
  • 2 x AAA Batteries
  • Indoor FM Antenna
  • AM Loop Antenna
  • Speaker Setup Microphone
  • Limited 2-Year Warranty
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