Onkyo TX-NR646 7.2-Channel Network A/V Receiver – B-Stock


Condition: B-Stock

Onkyo TX-NR 646 7.2-Channel Network A/V Receiver – B-Stock

  • DTS:X™ Compatible
  • Supports Dolby Atmos® up to 5.1.2 Channels
  • 170 W per Channel
  • Hi-Current Amp Design for Authentic Sound Reproduction
  • HDMI® 8 In / 2 Out Including 1 Front (4K UltraHD / HDCP 2.2 / 4:4:4 Color)
  • Bluetooth Audio / Wi-Fi® with Pandora, Spotify, and AirPlay
  • DSD 5.6 MHz, FLAC 192 kHz/24-bit Hi-Res Audio Capable
  • 384 kHz/32-bit Hi-Grade DAC
  • AccuEQ Room Acoustic Calibration

Out of stock

SKU: TXNR646 B-Stock Category:

Product Description

Onkyo TX-NR 646 7.2-Channel Network A/V Receiver – B-Stock

This Onkyo TX-NR646 is a “B-STOCK” item
Click Here For Gibby’s “B-Stock” Definition

Home Theater at the Cutting Edge

Experience the cutting edge of home theater with the 7.2-channel TX-NR646 Network A/V Receiver, the first in its class to feature the revolutionary DTS:X™ and Dolby Atmos® multi-dimensional audio formats. Onkyo’s high-current amplification system drives your speakers to reproduce soundtracks with maximum impact and fidelity at 170 W/Ch. UltraHD video capability is equally impressive, with eight latest spec HDMI® terminals including dedicated HDCP 2.2 compatible inputs for premium 4K video content and two HDMI outputs for video in separate rooms.

The TX-NR646’s high-grade 384 kHz/32-bit AKM DAC not only brings movies to life, but your Hi-Res and streamed music as well. Conveniently stream music over built-in Wi-Fi®, Bluetooth, AirPlay, or internet music services including Spotify Connect and Pandora. Use the free Onkyo Remote app to stream audio stored on your mobile device, browse and select tracks from online services, and control playback in two zones. Plus, for fans of vinyl, the TX-NR646 has a phono equalizer input to connect a turntable.

DTS:X™ Compatible

DTS:X is a next-generation object-based surround sound technology that includes height to deliver a fully-immersive listening experience to your living room. DTS:X provides listeners the ultimate in flexibility, immersion, and interactivity.

Supports Dolby Atmos® Up to 5.1.2 Channels

Dolby Atmos transports you from an ordinary moment into an extraordinary experience with captivating, multidimensional sound that fills your room and flows all around you to move your mind, body, and soul.

High-Current Amp Design for Authentic Sound Reproduction

High instantaneous current enhances speaker control for accurate and dynamic audio reproduction. It’s the cornerstone of Onkyo’s amplification philosophy.

HDMI® 8 In / 2 Out Including 1 Front (4K UltraHD / 4:4:4 / HDCP 2.2)

The latest HDMI specification and HDCP 2.2 compatibility support the latest formats and technologies planned for Hollywood content. This latest HDMI spec offers a significant increase in bandwidth (up to 18Gbps) to support new features such as 4K@50/60 (2160p), which is 4 times the clarity of 1080p/60 video resolution, and 4:4:4 color space.

This Onkyo AVR enables transmission of High Dynamic Range (HDR) formats, and provides enhanced picture quality by simultaneously enabling greater detail for both the dark and bright parts of an image.

Bluetooth Audio / Wi-Fi® with Pandora, Spotify, and AirPlay

Stream virtually any audio from your smartphone, tablet, or PC to your home theater for clear and powerful sound. Available internet radio and music subscription services include Pandora,
Spotify, and more.

DSD 5.6 MHz, FLAC 192 kHz/24-bit Hi-Res Audio Capable

Onkyo A/V receivers are engineered for universal Hi-Res compatibility and ease of use. Use the remote app to locate your 192/24 and 96/24 albums (including 5.6 MHz DSD playback) on PC or NAS and bask in the clarity, depth, and detail of high-resolution music.

384 kHz/32-bit Hi-Grade DAC

A premium-quality AK4458 digital-toanalog converter from Asahi Kasei unlocks the full potential of any audio format, thanks to unique low-distortion filtering technologies for clear sound.

Additional Information


Amplifier Section
Power Output
– All Channels 170 W/Ch (6 Ohms, 1 kHz, 0.9% THD,
– 1 Channel Driven, FTC)
– 100 W/Ch (8 Ohms, 20 Hz–20 kHz, 0.08%
– THD, 2 Channels Driven, FTC)
Dynamic Power
– 240 W (3 Ohms, Front)
– 210 W (4 Ohms, Front)
– 120 W (8 Ohms, Front)
THD+N (Total Harmonic Distortion + Noise)
– 0.08% (20 Hz–20 kHz, Half Power)
Damping Factor
– 60 (Front, 1 kHz, 8 Ohms)
Input Sensitivity and Impedance
– 200 mV/47 k-ohms (Line)
– 3.5 mV/47 k-ohms (Phono MM)
Rated RCA Output Level and Impedance
– 100 mV/2.2 k-ohms (Zone 2 Line Out)
– 200 mV/470 Ohms (Subwoofer Pre Out)
Maximum RCA Output Level and Impedance
– 1.0V/2.2 k-ohms (Zone 2 Line Out)
– 200m V/470 Ohms (Subwoofer Pre Out)
Phono Overload
– 70 mV (MM, 1 kHz, 0.5%)
Frequency Response
– 10 Hz–100 kHz/+1 dB, -3 dB (Direct Mode)
Tone Control
– ±10 dB, 20 Hz (Bass)
– ±10 dB, 20 kHz (Treble)
Signal-to-Noise Ratio
– 100 dB (Line, IHF-A)
– 80 dB (Phono MM, IHF-A)
Speaker Impedance
– 6 Ohms–16 Ohms

Video Section
Input Sensitivity/Output Level and Impedance
– 1.0 Vp–p/75 Ohms (Component Y)
– 0.7 Vp–p/75 Ohms (Component PB/CB, PR/CR)
– 1.0 Vp–p/75 Ohms (Composite)
Component Video Frequency Response
– 5 Hz–13.5 MHz/+0 dB, -3 dB

Tuner Section
Tuning Frequency Range
– FM 87.5 MHz–107.9 MHz
– AM 530 kHz–1,710 kHz
– FM/AM Preset Memory 40 Stations

Power Supply
– AC 120 V~, 60 Hz
Power Consumption
– 6.4 A
– No-Sound Power Consumption
– 70 W
Standby Power Consumption
– 0.1 W
– (W x H x D) 17 1/8˝ x 6 13/16˝ x 12 15/16˝
– (435 x 173.5 x 329 mm)
– 20.7 lbs. (9.4 kg)

– (W x H x D) 22 7/16˝ x 11 5/16˝ x 16 5/8˝
– (570 x 287 x 423 mm)
– 27.6 lbs. (12.5 kg)
– (B) 751398012228
Supplied Accessories
– Indoor FM antenna • AM loop antenna
– Speaker set-up microphone • Instruction manual
– Remote controller • AA (R6) batteries x 2

Number of Channels


Receivers - Features

DTS:X, Dolby Atmos, Wi-Fi, Bluetooth

Receivers - HDMI Inputs


Receivers - HDMI Outputs



B Stock

Estimated Shipping

When you add an item to your cart the Estimated Shipping* cost will be shown.  This estimated shipping* cost is accurate to most major city locations across Canada.  If the shipping cost is higher than the estimated shipping* then GibbysESM will contact you for approval before we process your order.

To learn more click Shipping Terms & Conditions

Onkyo Canada 1 Years Limited Warranty


There are no reviews yet.

Be the first to review “Onkyo TX-NR646 7.2-Channel Network A/V Receiver – B-Stock”