TX-NR555 7.2-Channel Network A/V Receiver

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  • 140 W per Channel
  • Dynamic Audio Amplification for Clear & Realistic Sound
  • VLSC for Front Channels
  • DTS:X Ready and Dolby Atmos® Support
  • HDMI® 6 In / 1 Out
  • Powered Zone 2
  • 4K UltraHD / HDR / HDCP 2.2 / 4:4:4 Color Space
  • Built-in Bluetooth & 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

Dynamic Audio Amplification

Backed by 70 years of experience building high-grade audio components, the TX-NR555 amplifies accurate, noise-free signal processing with high-current power for dynamic speaker control. The result is pure, rich and authentic sound.

Onkyo's dynamic audio amplification delivers massive power at 140 W/Ch (6 Ohms, 1 kHz, 0.9% THD, 1 Channel Driven)/ 80 W/Ch (8 Ohms, 20 Hz–20 kHz, 0.08% THD, 2 Channels Driven).

Smooth Analog Signal

Onkyo developed Vector Linear Shaping Circuitry (VLSC) to reassemble the audio signal to its original form following processing. Unlike conventional filters, VLSC removes pulse noise generated in D/A conversion, allowing the sound wave to be reproduced with extremely high fidelity for a smooth analog signal.

VLSC Explained

Multi-Zone Audio

The TX-NR555 Powered Zone 2 brings audio to speakers connected to the receiver into a second room. With the dedicated Zone 2 DAC, you can send internet audio sources to your second listening zone.

Supports Dolby Atmos® Up to 5.1.2 Channels

Dolby Atmos moves sound around you in three-dimensional space, so you feel like you're inside the action. The TX-NR555's Dolby Atmos decoding transports you from the ordinary into the extraordinary.

Sound designers and artists mix in a 3D space, steering effects through surround channels and adding a seamless overhead dimension with discrete height channels.

Additionally, the Dolby surround up-mixer processes content not mixed for Dolby Atmos to fill the flexible speaker layouts of a Dolby Atmos system.

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DTS:X Ready

DTS:X is an object-based surround sound technology that includes height channels for a fully-immersive listening experience. DTS:X provides listeners flexibility, immersion, and interactivity. You will be able to personalize your audio experience, for example, by turning up JUST the dialog within a mix. DTS:X allows you to customize to your room layout as well as control dialog and dynamic range.

(DTS:X firmware update scheduled for August 31st, 2016.)

Learn More

4K UltraHD Video Performance

The TX-NR555's HDMI specifications and HDCP 2.2 compatibility support the latest formats being released by Hollywood. The latest HDMI specs offer a significant increase in bandwidth (up to 18Gbps) to support new features such as 4:4:4 color space and 4K@50/60 (2160p), which is 4 times the clarity of 1080p/60 video resolution. The TX-NR555 enables transmission of High Dynamic Range (HDR) formats, with BT.2020 support, and provides enhanced picture quality by simultaneously enabling greater detail for both the dark and bright parts of an image.

The TX-NR555 also effortlessly upscales 1080p video to stunning 4k UltraHD.

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

The TX-NR555 has AirPlay, Wi-Fi and Bluetooth technologies built in. Stream virtually any audio from a smartphone, tablet or PC to your home theater for powerful sound.

With Spotify, Pandora, Deezer and TuneIn built-in, you can select a station and search for music available on these services via the Onkyo Controller app on your phone. The free Onkyo Remote app puts a range of streaming options at your fingertips, from universal hi-res audio via network-attached devices to internet streaming services to music on your smartphone and tablet.

Further, Google Cast will be operable with an upcoming firmware update.

384 kHz/32-bit Hi-Grade DAC

No matter what you're listening to, it will sound powerfully full, clean and clear. A premium-quality AK4458 digital-to-analog converter from Asahi Kasei implements unique low-distortion filtering technologies for clear sound, and unlocks the full potential of any audio format, including compressed, lossless, and hi-res audio (MP3, WMA, WMA Lossless, FLAC, WAV, OggVorbis, AAC, Apple Lossless, DSD 5.6 MHz, LPCM, and Dolby TrueHD).

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AccuEQ adds AccuReflex for 2016

AccuEQ conducts two measurements- one to set the level, distance and crossover for ALL speakers, including the subwoofer. Choose to include or bypass EQ measurement for front left and right speakers, and choose to automatically or manually set the EQ. Further, you can save your own manual EQ settings into three available presets.

The new AccuReflex technology aligns the phase of upfiring "height" speakers with the sound coming directly from your other speakers. Any delay is resolved so that everything arrives at your ears at the same time. The result is cohesive reproduction of object-based soundtracks.

Learn more

FireConnect Multi-room Audio

A firmware update will enable you to wirelessly send music from Bluetooth, USB or network sources like Spotify and Pandora from the TX-NR555 to an optional speaker* placed anywhere in your home using FireConnect Powered by Blackfire. Stable, fast, and easy to control with a mobile, it’s the smart way to set audio free.

FireConnect is a technology developed by Blackfire Research. Multi-room audio enabled by this technology requires an optional Onkyo wireless speaker scheduled for release in late 2016. Onkyo cannot guarantee the compatibility of its A/V receivers with other devices featuring FireConnect. Please consult the Onkyo website for further announcements regarding these technologies.

Copyright 2016 Onkyo USA Corporation. All rights reserved. Onkyo features and specifications subject to change without notice. Availability of Internet and third party services depends on region. Some services may require a paid subscription and firmware update.Availability of third-party services advertised here is accurate at the time of publication, but may be subject to change without notice.

# Channels 7.2
Power Watts/Ch (6 Ohms 1kHz, 1 Channel Driven, FTC) 140, 1.0% THD
Power Watts/Ch (8 Ohms 20-20kHz, 2 Channels Driven, FTC) 80, 0.08% THD
Dynamic Audio Amplification ✓ (for Clear and Realistic Sound)
H.C.P.S. (High Current Power Supply) -
Non-Phase Shift Amplifier
THX Certified -
Continuous 6 Ohms Rated
Certified 4 Ohms Performance -
Discrete Output Stage Circuitry
3-Stage Inverted Darlington Circuitry -
PUSH-PULL Design -
Independent Block Construction (Amp/Preprocessor) -
High-Grade Toroidal Transformer -
Independent Power Supply -
Bi-amp Capability For Front
Dolby Atmos
32-Bit Digital Signal Processing Engine
Dolby Decoder Atmos, True HD, DD Plus
DTS Decoder DTS:X, DTS-HD Master Audio
ONKYO GAME Surround Modes ✓ (Rock, Sports, Action, RPG)
VLSC for Noiseless Audio Processing
THX Processing Mode -
AccuEQ Room Calibration ✓ (w/ AccuReflex)
Phase-Matching Bass Boost
Direct/Pure Mode ✓ / -
Pure Direct Analog Path Mode -
Advanced Music Optimizer
384K/32 Bit DACs
192K/24 Bit DACs -
Analog Audio IN 6
Phono Input
Digital Audio IN (OPT/COAX) 2 / 1
Composite Video I/O 2 / 0
Component Video I/O 2 / 0
Front Panel HDMI -
Front-Panel A/V 1 (Analog)
USB Input ✓ (Rear)
HDMI I/O 6 / 1
HDMI 4K/60 Hz- Capable HDMI Terminals
HDCP 2.2 Copy-Protection Compatibility
HDMI Support for High Dynamic Range
HDMI Support for 3D, Audio Return Channel and CEC
BT.2020 Support
HDMI Support for Deep Color, x.v.Color, LipSync
HDMI Support for DVD-Audio, SACD, Multichannel PCM
Analog To HDMI Upconversion
1080p to 4K Upscaling
4K Passthrough
Analog Pre-Outs Subwoofer (x2)
Speaker A/+B -
Powered Zone 2
Powered Zone 3 -
Zone 2 Line Out -
Zone 2 Video Out -
Zone 2 Digital to Analog Audio Conversion ✓ (Net)
Zone 3 Line Out -
Whole House Mode -
FireConnect Multi-room Audio
Google Cast
Supports Onkyo Remote App
Internet Radio Capable
Spotify Connect Support
Streaming Audio From PC / Network
Hi-Res Streaming Audio Formats
Streaming Audio From USB memory
Wireless Network IEEE 802.11 a/b/g/n 5 Ghz / 2.4 Ghz
Bluetooth ✓ (Built-in)
Integration Access
RS-232 -
IR Input -
IR Output -
ONKYO-RI System Control -
RIHD (Remote Interactive Over HDMI)
12V Trigger -
Pre-Programmed Remote -
Hybrid Standby Function
Smart Grid-Ready
Auto Speaker Calibration W/Mic. AccuEQ w/ AccuReflex
Solid Aluminum Front -
Transparent High-Grade Speaker Terminals -
Detachable AC Cord -
Warranty 2 YEARS
Amplifier Section
Power Output
All Channels140 W/Ch (6 Ohms, 1 kHz, 1.0% THD, 1 Channel Driven)
80 W/Ch (8 Ohms, 20 Hz–20 kHz, 0.08% THD, 2 Channels Driven, FTC)
Dynamic Power160 W (3 Ohms, Front)
125 W (4 Ohms, Front)
85 W (8 Ohms, Front)
THD+N (Total Harmonic Distortion + Noise)0.08% (20 Hz–20 kHz, Half Power)
Damping Factor-
Input Sensitivity and Impedance200 mV/47 k-ohms (Line/Unbalanced)
3.5 mV/47 k-ohms (Phono/MM)
Rated RCA Output Level and Impedance200 mV/2.3 k-ohms (Zone 2 Line Out)
1 V/470 ohms (Subwoofer Pre Out)
Maximum RCA Output Level and Impedance-
Phono Overload70 mV (MM, 1 kHz, 0.5%)
Frequency Response10 Hz–100 kHz/+1 dB, -3 dB (Direct Mode)
Tone Control±10 dB, 90 Hz (Bass)
±10 dB, 7.5 kHz (Treble)
Signal-to-Noise Ratio106 dB (Line, IHF-A)
80 dB (Phono, IHF-A)
Speaker Impedance6 ohms–16 ohms
Video Section
Input Sensitivity/Output Level and Impedance-
Video1.0 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+0 dB, -3 dB
Tuner Section
Tuning Frequency Range
FM87.5 MHz–1070.9 MHz
AM530 kHz–1,710 kHz
FM/AM Preset Memory40 stations
Power SupplyAC 120 V~, 60 Hz
Power Consumption460 W
No-Sound Power Consumption-
Standby Power Consumption0.1 W
Dimensions (W x H x D)17 1/8" x 6 13/16" x 14 7/8" (435 x 173.5 x 378 mm)
Weight20.7 lbs (9.4 kg)
Dimensions (W x H x D)22 7/16" x 11 5/16" x 18 7/16"
(570 x 288 x 468 mm)
Weight27.6 lbs. (12.5 kg)
UPC Code

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