- 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
*Sold exclusively within the US only. No shipments allowed outside the US!
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.
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.
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 functionality via upcoming firmware update.)
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 [email protected]/60 (2160p), which is 4 times the clarity of 1080p/60 video resolution. The TX-NR555 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.
The TX-NR5557 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, and TuneIn built-in, you can select a station and search for music available on these services via the Onkyo Remote 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, Tidal and 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).
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.
FireConnect™ Multi-room Audio
A firmware update will enable any audio source connected to the receiver (from vinyl to streaming audio) to be sent wirelessly via FireConnect Powered by Blackfire to an optional speaker* placed anywhere in your home. 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 summer 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.
|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)|
|Non-Phase Shift Amplifier||✓|
|Continuous 6 Ohms Rated||✓|
|Discrete Output Stage Circuitry||✓|
|Bi-amp Capability For Front||✓|
|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||✓|
|AccuEQ Room Calibration||✓|
|Phase-Matching Bass Boost||✓|
|Advanced Music Optimizer||✓|
|384K/32 Bit DACs||✓|
|Analog Audio IN||6|
|Digital Audio IN (OPT/COAX)||2 / 1|
|Composite Video I/O||2 / 0|
|Component Video I/O||2 / 0|
|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||✓|
|HDMI Support for Deep Color, x.v.Color, LipSync||✓|
|HDMI Support for DVD-Audio, SACD, Multichannel PCM||✓|
|Analog To HDMI Upconversion||✓|
|4K (up to 4096 x 2160) Upscaling||✓|
|Analog Pre-Outs||Subwoofer (x2)|
|Powered Zone 2||✓|
|Zone 2 Digital to Analog Audio Conversion||✓ (Net)|
|Made for iPod, iPhone, iPad||✓|
|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||✓|
|RIHD (Remote Interactive Over HDMI)||✓|
|Hybrid Standby Function||✓|
|Auto Speaker Calibration W/Mic.||AccuEQ|
|All Channels||140 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 Power||160 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)|
|Input Sensitivity and Impedance||200 mV/47 k-ohms (Line/Unbalanced)
3.5 mV/47 k-ohms (Phono/MM)
|Rated RCA Output Level and Impedance||200 mV/2.3 k-ohms (Zone 2 Line Out)
1 V/470 ohms (Subwoofer Pre Out)
|Maximum RCA Output Level and Impedance||-|
|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, 90 Hz (Bass)
±10 dB, 7.5 kHz (Treble)
|Signal-to-Noise Ratio||106 dB (Line, IHF-A)
80 dB (Phono, IHF-A)
|Speaker Impedance||6 ohms–16 ohms|
|Input Sensitivity/Output Level and Impedance||-|
|Video||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||+0 dB, -3 dB|
|Tuning Frequency Range|
|FM||87.5 MHz–1070.9 MHz|
|AM||530 kHz–1,710 kHz|
|FM/AM Preset Memory||40 stations|
|Power Supply||AC 120 V~, 60 Hz|
|Power Consumption||460 W|
|No-Sound Power Consumption||-|
|Standby Power Consumption||0.1 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)|
|Weight||20.7 lbs (9.4 kg)|
Buying a Onkyo Factory Refurbished product is a great way to get "as-new" products at a considerable savings. Every product has been thoroughly tested, repaired (if necessary), cleaned and otherwise renewed to original condition. Next it’s repackaged with accessories included. When you consider that a factory-renewed Onkyo product undergoes such close scrutiny for defects and workmanship, you might actually be buying something that is in many ways better than new. And for your piece of mind and protection, your purchase is covered by a full 1 year parts and labor warranty valid at any authorized Onkyo repair center (you can look-up locations online here or call 201-785-2600)
Onkyo, like all electronics manufactures, receives products returned for various reasons. In 2011 consumers returned 17 billion dollars in electronics globally, of which less than 5% were found to be defective! Once a product has been opened it must be resold as refurbished and can’t be resold as new again. The history and reason why a product was returned is not provided to us, thus we can’t provide any additional details regarding its past. All products are processed by Onkyo certified technicians, where they are fully tested, repaired (only if necessary), and retested again to ensure the highest quality control. Each unit must pass a complete battery of test before it can be titled a "Onkyo Factory Refurbished" product.
Most units are Cosmetically in Mint Condition (graded a 9 or higher on a scale of 1-10). Very minor signs of wear (light surface scuffs or minor scratches) may be present, although most units show little or no signs of any usage. We DO NOT sell products that are cosmetically damaged (cracked displays, broken knobs, heavy scratches, or physically abused) unless noted in the description. Unfortunately, we can’t provide actual photos of each unit or pick the best one for anyone, as they are all randomly chosen from our factory sealed boxes.