Onkyo TX-NR555
Onkyo TX-NR545
Highlights
- 7.2 channels
- 7.1 channel processing
- 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
- Dolby Atmos, DTS:X capable
- HDR10, Dolby Vision, 4K Upscaling, 4K Passthrough
- AirPlay, Chromecast
- Ethernet, Wi-Fi, Bluetooth
- USB and Phono inputs
Highlights
- 7.2 channels
- 7.1 channel processing
- 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
- Dolby Atmos capable
- HDR10, 4K Passthrough
- AirPlay, DLNA
- Ethernet, Wi-Fi, Bluetooth
- USB input
Disclosure: We earn money from the affiliate links to products associated with content in this article.
Overview
Here we are comparing Onkyo TX-NR555 to Onkyo TX-NR545 to reveal their common strengths and weaknesses as well as the differences between them which will help you in making a correct decision before the purchase. Both receivers have 7 channel amplifiers with Onkyo TX-NR555's being more powerful.
We have evaluated both receivers. Onkyo TX-NR555 gets higher overall score in our ranking system which is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.
Onkyo TX-NR555
Onkyo TX-NR545
Amplifier score is based on power ratings, minimum impedance load, power supply, transformer type, total harmonic distortion, damping factor, signal to noise ratio and other small details. Audio score depends on the number of channels, front wide channel support, maximum channel processing, support of audio formats, DAC specifications, room calibration algorithm... Video score is based on HDR, Dolby Vision and 4K passthrough, upscaling, analog to HDMI upconversion. Connectivity score is defined from all wired and wireless inputs and outputs, internet and bluetooth connections, HEOS, SONOS and others. Multizone score depends on the number of zones with their outputs. Radio score is evaluated form digital radio support and analog tuner with its frequency range, signal to noise ratio, harmonic distortion...
Advantage of Onkyo TX-NR555
This section shows those features and specifications which are the reason to choose Onkyo TX-NR555 over Onkyo TX-NR545.
Onkyo TX-NR555 has more power per channel, bigger power supply, higher signal to noise ratio, higher DSD sampling rate via USB, higher wi-fi standard and higher bluetooth standard. It supports DTS:X and Tidal. It has bi-amp capability, DTS Dialog Control and phono input. In video department only Onkyo TX-NR555 supports Dolby Vision.
| Onkyo TX-NR555 | vs | Onkyo TX-NR545 | |
|---|---|---|---|
| VLSC (Vector Linear Shaping Circuitry) | Front L/R channels | vs | |
| Bi-amp capability | vs | ||
| DTS:X | up to 5.1.2 | vs | |
| DTS Neural:X | after firmware update | vs | |
| Higher Resolution Music Playback via USB | up to 192 kHz | vs | up to 96 kHz |
| High Resolution Audio Formats via USB | FLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD | vs | FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC |
| DTS Dialog Control | vs | ||
| Dialog Normalization | vs | ||
| BT.2020 color space | vs | ||
| Dolby Vision | vs | ||
| Video Signal Upscaling | 1080p to 4K | vs | |
| FireConnect | vs | ||
| FlareConnect | vs | ||
| Chromecast Built-In | vs | ||
| Phono Input | vs | ||
| Tidal | vs | ||
| Bigger Power Supply | 460 W | vs | 4.3 A |
| Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) | 80 W (0.08% THD) | vs | 65 W (0.7% THD) |
| Higher Power Output (6 Ω, 1 kHz, 1 channel driven, FTC) | 140 W (0.9% THD) | vs | 115 W (0.9% THD) |
| Higher S/N Ratio (Line, IHF-A) | 106 dB | vs | 100 dB |
| Higher DSD Sampling Rate via USB | 2.8 MHz, 5.6 MHz | vs | 2.8 MHz, 5.6 MHz |
| Wi-Fi Standard | IEEE 802.11 a/b/g/n | vs | IEEE 802.11 b/g/n |
| Wi-Fi Terminal Frequency | 5 GHz, 2.4 GHz | vs | 2.4 GHz |
| Newer Bluetooth Version | 4.1 + LE | vs | 2.1 + EDR |
Advantage of Onkyo TX-NR545
This section shows those features and specifications which are the reason to choose Onkyo TX-NR555 over Onkyo TX-NR545.
Onkyo TX-NR555 has more power per channel, bigger power supply, higher signal to noise ratio, higher DSD sampling rate via USB, higher wi-fi standard and higher bluetooth standard. It supports DTS:X and Tidal. It has bi-amp capability, DTS Dialog Control and phono input. In video department only Onkyo TX-NR555 supports Dolby Vision.
| Onkyo TX-NR555 | vs | Onkyo TX-NR545 | |
|---|---|---|---|
| Music Playback via USB | FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD | vs | FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TrueHD |
| More Analog Audio Line Inputs | 7 (1 Front) | vs | 8 (1 front) |
| More Analog Audio Line Outputs | vs | 1 | |
| More Composite Video Inputs | 2 | vs | 4 (1 front) |
| Front A/V Inputs | Mini-Jack | vs | Composite Video, RCA Audio |
| ONKYO-RI System Control | vs | ||
| Pre-Pro/Learning Remote | / | vs | / |
| SiriusXM Internet Radio | vs | ||
| Independent Power Supply | vs | 2 | |
| Higher DSD Sampling Rate via HDMI | 2.8 MHz | vs | 2.8 MHz, 5.6 MHz |
| Wider AM Frequency Range | 530 kHz - 1710 kHz | vs | 522/530 kHz - 1611/1710 kHz |
Common Strengths and Weaknesses
Here we list common strengths and weaknesses of both receivers.
PROS |
|---|
| 👍 Dolby Atmos |
| 👍 Dolby TrueHD |
| 👍 Dolby Digital Plus |
| 👍 Dolby Surround Upmixer |
| 👍 DTS Neo |
| 👍 DTS-HD Master Audio |
| 👍 DTS-HD High Resolution Audio |
| 👍 DTS 96/24 |
| 👍 DTS Express |
| 👍 DTS-ES |
| 👍 High Resolution Music Playback via USB and/or Network |
| 👍 Gapless Playback |
| 👍 DSD via HDMI |
| 👍 DSD via USB |
| 👍 Compressed Music Enhancer |
| 👍 Phase-Matching Bass Boost |
| 👍 Auto Speaker Calibration System with Mic. |
| 👍 HDR10 |
| 👍 3-D Ready |
| 👍 4K or 8K Video Passthrough |
| 👍 Analog To HDMI Upconversion |
| 👍 Ethernet |
| 👍 Wi-Fi |
| 👍 Bluetooth |
| 👍 New HDCP Version |
| 👍 USB Input |
| 👍 Many Analog Audio Line Inputs |
| 👍 Composite Video Inputs |
| 👍 Component Video Inputs |
| 👍 Zones |
| 👍 Analog Tuner |
| 👍 Pandora |
| 👍 Spotify |
| 👍 Deezer |
| 👍 H.C.P.S. (High Current Power Supply) |
CONS |
|---|
| 👍 No Front Wide Channel Support |
| 👍 Not Certified 4 Ω Performance |
| 👍 No Dolby Atmos Height Virtualization |
| 👍 No DTS Virtual:X |
| 👍 No IMAX Enhanced |
| 👍 No Auro 3D with Auro-Matic Upmixer |
| 👍 No High-resolution Music Enhancer |
| 👍 No HDR10+ |
| 👍 No Hybrid Log Gamma (HLG) |
| 👍 Does not Work with Amazon Alexa |
| 👍 Does Not Work with SONOS |
| 👍 No eARC |
| 👍 Few HDMI Outputs |
| 👍 No Multi-Channel Input |
| 👍 No Analog Pre-Outs |
| 👍 No Napster |
Amplifier
Onkyo TX-NR555 and Onkyo TX-NR545 have 7 channel amplifiers. Onkyo TX-NR555 delivers 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and Onkyo TX-NR545 delivers 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
Video Features
Both receivers support 4K passthrough up to 60p. Onkyo TX-NR555 can do 4K upscaling. Onkyo TX-NR555 supports HDR10, Dolby Vision and Onkyo TX-NR545 supports HDR10.
HDR10
High-dynamic-range (HDR) video has greater dynamic range than standard-dynamic-range (SDR) video with brigter whites and deeper blacks. HDR10 was announced on August 27, 2015, by the Consumer Technology Association and uses the wide-gamut Rec. 2020 color space. It sends static metadata via video stream to the TV which calibrates its screen brightness and color according to that. HDR10 supports up to 1000 nits of brightness and 10-bit color which corresponds to 1024 shades of the primary RGB colors.
Dolby Vision
Dolby Vision is an update to HDR10 by adding dynamic metadata that can be used to more accurately adjust brightness levels up to 10,000 nits maximum brightness on a scene-by-scene or frame-by-frame basis and supports up to 12-bit color depth (4096 shades of RGB) and 8K resolution.
Dolby Atmos and Dolby Surround upmixer
Onkyo TX-NR555 and Onkyo TX-NR545 support Dolby Atmos with its Dolby Surround upmixer. They can be configured upto 5.1.2 channels using internal amplifiers.
Dolby Atmos is the first cinematic audio format in which sounds exist as individual entities, called audio objects. In Dolby Atmos, any sound - the helicopter, a car screeching around a corner, a melodic bird call - can exist as an independent audio object, free of channel restrictions. They can be precisely placed and moved anywhere in your room, including overhead, to flow above and around you in three-dimensional space. Through the use of audio objects, overhead sound, and all the richness, clarity, and power of Dolby sound, Dolby Atmos turns your room into an amazing place for entertainment. You'll feel like you're inside the action, in ways you've never experienced before.
Dolby Atmos for the home represents every sound in the original cinema mix as an audio object. Extensions to the Dolby Audio™ codecs, along with an advanced scalable algorithm, allow Dolby Atmos to be delivered via Blu-ray Disc and streaming media. A spatially-coded substream is added to Dolby TrueHD or Dolby Digital Plus. A Dolby Atmos audio/video receiver (AVR) adapts the cinema experience to your home theater from seven speakers to as many as 34 in 24.1.10 configuration, recreating the original artistic concept. The format supports up to 128 simultaneous independent audio objects in a mix for rich, realistic, and breathtaking sound. It recreates the director's original concept through descriptive metadata to provide customized playback for home theater and delivers sounds above you through overhead speakers, special upward-firing Dolby Atmos speakers, or a Dolby Atmos enabled sound bar.
If the content is not mixed in Dolby Atmos then the Dolby surround upmixer will expand the audio to all channels including ceiling speakers. The upmixer has replaced the Dolby Pro Logic II family with improved upmixing algorithms.
DTS:X and Neural:X upmixer
Onkyo TX-NR555 supports DTS:X. It can be configured upto 5.1.2 channels using internal amplifiers.
A technique used in DTS:X is similar to the one used in Dolby Atmos. Instead of a fixed number of channels, DTS:X defines object locations from the listener in polar coordinates. An a/v receiver then dynamically renders sound according to the current speaker configuration. The speaker layout employed by DTS:X is the sum of Dolby Atmos and Auro-3D. It has standard 7.1 channel base layer, a 5 channel height layer above the base layer on the front and side walls, and 3 rows of speakers on the ceiling.
DTS Neural:X is an upmixer that can take non DTS:X content and upmix it to the DTS:X speaker layout. It has replaced the DTS Neo family with improved flexibility.
Dynamic Audio Amplification
Onkyo TX-NR555 features Dynamic Audio Amplification which is Onkyo’s amplification philosophy that focuses on capturing the energy and dynamism contained in the audio signal and reproducing it without loss. Audio signals are not static like a test tone, but rather a countless collection of constantly moving waves. While static measurements such as S/N ratio and Total Harmonic Distortion are important, Onkyo believes that excellent dynamic and transient response is the key to emotionally involving sound. Dynamism - the “life” in music - is achieved when the amp can respond to changes in the signal instantaneously, so notes start and stop naturally and the nuances in attack, decay, sustain, and release are voiced with conviction. Onkyo home theater receivers represent the culmination of almost 70 years’ experience in amplifier design. The unique elements of their amplification system comprise high-current, low-impedance architecture to accurately control large speaker cones while enabling instantaneous response to dynamic changes, and discrete wide-range amplifier circuit topology to eliminate phase shift for clear and accurate audio imaging.
WRAT
Onkyo TX-NR545 features Onkyo’s Wide Range Amp Technology (WRAT) circuit layout that prevents phase shifting by pushing the roll-off point higher than the listening-level frequency. Amplifying sound without phase shift creates an uncommonly well-focused and realistic audio image. If phase shift occurs and signal timing is not accurate, then neither is the resulting audio image.
Advanced Music Optimizer
Compressed music enhancement in Onkyo TX-NR555 and Onkyo TX-NR545 is done by Onkyo’s Advanced Music Optimizer. While MP3 or AAC files may sound fine through the headphones of your portable digital player, the limitations of these files can be exposed when played back through a quality home entertainment system. This is because a significant amount of high-frequency bit information is lost during the file-compression process. To counter this, Onkyo has designed the Advanced Music Optimizer to compensate for lost bit information and improve the quality of compressed audio signals. This results in a clearer and more expansive sound. Also included in this technology is a loudness correction feature that further improves the audio character of compressed files.
Phase-Matching Bass Boost
Onkyo TX-NR555 and Onkyo TX-NR545 feature Phase-Matching Bass Boost. The negative effects of phase-shift or the timing difference between sound waves of different frequencies can sometimes be heard in audio players when corners are cut in order to increase bass response. While most audio systems have some form of low-frequency enhancement system, often a bigger bass sound comes at the expense of mid-range clarity, and results in a smeared or muddy sound. Onkyo’s Phase-Matching Bass Boost technology avoids this problem by improving the phase timing to preserve the natural clarity of the mid-range allowing vocals and strings to shine while maintaining a smooth, powerful bass response at all volume levels.
Connectivity
Onkyo TX-NR555
Onkyo TX-NR555 can be connected to internet using ethernet cable or built-in wi-fi adapter. It can also connect to bluetooth devices via built-in bluetooth adapter. The Receiver supports AirPlay. It has 6 HDMI inputs with HDCP 2.2 (3 in / 1 out) copy protection. There is a phono input with built-in phono stage for connecting the cartridge output of the turntable directly to the Receiver.
Front panel has Mini-Jack input.
Onkyo TX-NR545
Onkyo TX-NR545 can be connected to internet using ethernet cable or built-in wi-fi adapter. It can also connect to bluetooth devices via built-in bluetooth adapter. The Receiver supports AirPlay. It has 6 HDMI inputs with HDCP 2.2 (3 in / 2 out) copy protection.
Front panel has Composite Video and RCA Audio inputs.
Side by Side Comparison
And in the end let us list the detailed specifications of the receivers side-by-side.
Note: The following table shows only those details which are applicable for both models and excludes the ones that are applicable for only one model. If you want to see a full list of specs for each model please visit their individual pages here - Onkyo TX-NR555 and here - Onkyo TX-NR545.
| BASICS | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| Brand | Onkyo | vs | Onkyo |
| Model | TX-NR555 | vs | TX-NR545 |
| Type | A/V Receiver | vs | A/V Receiver |
| Country | North America | vs | USA |
| Release Year | 2016 | vs | 2015 |
| AMPLIFIER | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| Channels | 7.2 | vs | 7.2 |
| Front Wide Channel Support | vs | ||
| VLSC (Vector Linear Shaping Circuitry) | Front L/R channels | vs | |
| Optimum Gain Volume Circuitry | vs | ||
| THX™ Certification | vs | ||
| Continuous 6 Ω Rated | vs | ||
| Certified 4 Ω Performance | vs | ||
| Discrete Output Stage Circuitry | vs | ||
| 3-Stage Inverted Darlington Circuitry | vs | ||
| PUSH-PULL Design | vs | ||
| Independent Block Construction (Amp/Preprocessor) | vs | ||
| Bi-amp Capability | vs | ||
| BTL (Bridged Transless or Bridging) | vs |
| AUDIO | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| Digital Signal Processing (DSP) Engine | Advanced 32-bit DSP Chip | vs | Advanced 32-bit DSP Chip |
| DAC | AKM AK4458 (8 Channels x 1) | vs | Asahi Kasei AK4458 |
| Maximum Channel Processing | 7.1 | vs | 7.1 |
| Air Studios Monitor Certification | vs | ||
| Dolby Atmos | up to 5.1.2 | vs | up to with firmware update |
| Dolby Atmos Height Virtualization | vs | ||
| Dolby TrueHD | vs | ||
| Dolby Digital Plus | vs | ||
| Dolby Surround Upmixer | vs | ||
| Dolby Pro Logic | vs | ||
| Surround EX | vs | ||
| DTS:X | up to 5.1.2 | vs | |
| DTS Neural:X | after firmware update | vs | |
| DTS Virtual:X | vs | ||
| DTS Neo | Neo:6 until firmware update | vs | Neo:6 |
| DTS-HD Master Audio | vs | ||
| DTS-HD High Resolution Audio | vs | ||
| DTS 96/24 | vs | ||
| DTS Express | vs | ||
| DTS-ES | vs | ||
| IMAX Enhanced | vs | ||
| Auro 3D with Auro-Matic Upmixer | vs | ||
| PCM | 2-ch/Multi-ch Input | vs | 2-ch/Multi-ch Input |
| Music Playback via USB | FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD | vs | FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TrueHD |
| High Resolution Music Playback via USB and/or Network | up to 192 kHz | vs | up to 96 kHz |
| High Resolution Audio Formats via USB | FLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD | vs | FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC |
| Multi-Channel Music File Playback via USB | vs | ||
| Gapless Playback | vs | ||
| DSD via HDMI | 2-ch/Multi-ch Input | vs | 2-ch/Multi-ch Input |
| DSD via USB | 2-ch Input | vs | 2-ch Input |
| DSD to PCM Converter | vs | ||
| USB DAC | vs | ||
| Jitter Reduction | PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio | vs | PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio |
| DTS Dialog Control | vs | ||
| Dialog Enhancement | vs | ||
| Dialog Normalization | vs | ||
| Dialogue Lift | vs | ||
| Tone Control | Front L/R Channels | vs | Front L/R Channels |
| Compressed Music Enhancer | Advanced Music Optimizer (bluetooth included) | vs | Advanced Music Optimizer (bluetooth included) |
| High-resolution Music Enhancer | vs | ||
| THX Processing Mode | vs | ||
| Audyssey Dynamic EQ | vs | ||
| Audyssey Dynamic Volume | vs | ||
| Audyssey LFC | vs | ||
| Audyssey Sub EQ HT | vs | ||
| Audyssey DSX | vs | ||
| Phase-Matching Bass Boost | vs | for Deep Bass and Clear Mid-Range | |
| Direct Mode | vs | ||
| Pure Audio Mode | vs | ||
| Pure Direct Analog Path Mode | vs | ||
| Virtual Speakers | T-D (Theater-Dimensional) | vs | T-D (Theater-Dimensional) |
| CALIBRATION | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| Auto Speaker Calibration System with Mic. | AccuEQ with AccuReflex™ | vs | AccuEQ Advance |
| VIDEO | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| HDR10 | vs | ||
| HDR10+ | vs | ||
| BT.2020 color space | vs | ||
| Dolby Vision | vs | ||
| HLG (Hybrid Log Gamma) | vs | ||
| QMS (Quick Media Switching) | vs | ||
| ALLM (Auto Low Latency Mode) | vs | ||
| VRR (Variable Refresh Rate) | vs | ||
| QFT (Quick Frame transport) | vs | ||
| 3-D Ready | vs | ||
| Video Signal Passthrough | up to 4K/60p (RGB/YCbCr4:4:4) | vs | up to 4K/60p (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit) |
| Video Signal Upscaling | 1080p to 4K | vs | |
| Analog To HDMI Upconversion | Component**, Composite | vs | Component**, Composite |
| Component Video Upscaling | vs | ||
| Analog to Analog Video conversion | vs | ||
| Component Video Maximum Resolution | 480i/576i | vs | 480i/576i |
| isf Certified Calibration Control | vs |
| CONNECTIVITY | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| MHL Input | vs | ||
| FireConnect | vs | ||
| FlareConnect | vs | ||
| Chromecast Built-In | vs | ||
| DTS Play-Fi | vs | ||
| Works with Amazon Alexa | vs | ||
| Works with SONOS | vs | ||
| AirPlay | AirPlay | vs | AirPlay |
| Apple Product Connection | iPod, iPhone and iPad | vs | iPod, iPhone and iPad |
| Remote App | Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices | vs | Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices |
| InstaPrevue Input Source Prevue | vs | ||
| Ethernet | vs | ||
| Ethernet Switch | vs | ||
| Wi-Fi | vs | ||
| Bluetooth | SBC, AAC | vs | |
| HDBaseT Compatible | vs | ||
| Enhanced ARC | vs | ||
| HDCP Version | 2.2 (3 in / 1 out) | vs | 2.2 (3 in / 2 out) |
| HDMI Input | 6 | vs | 6 |
| HDMI Output | 1 | vs | 1 |
| USB Input | 1 (Rear) | vs | 1 (Rear) |
| USB DC Out Port | vs | ||
| Analog Audio Line Input | 7 (1 Front) | vs | 8 (1 front) |
| Analog Audio Line Output | vs | 1 | |
| Phono Input | vs | ||
| Optical In | 2 | vs | 2 |
| Optical Out | vs | ||
| Coaxial In/Out | 1 / | vs | 1 / |
| Composite Video Input | 2 | vs | 4 (1 front) |
| Composite Video Output | vs | ||
| S-Video Input | vs | ||
| S-Video Output | vs | ||
| Component Video Input | 2 | vs | 2 |
| Component Video Output | vs | ||
| PC In | vs | ||
| Multi-Channel Input | vs | ||
| Analog Pre-Outs | 0.2 | vs | 0.2 |
| XLR Inputs | vs | ||
| XLR Pre-outs | vs | ||
| Front A/V Inputs | Mini-Jack | vs | Composite Video, RCA Audio |
| Speaker A/B | vs | ||
| Headphone Out | 6.3 mm | vs | 6.3 mm |
| ZONES | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| Zones | 2 | vs | 2 |
| Powered Zones | 2 | vs | 2 |
| Zone 2 | RCA Line Out | vs | RCA Line Out |
| Whole House Mode | vs | ||
| RS-232 | vs | ||
| +12V Trigger Output | 0 | vs | 0 |
| Remote (IR) Input/Output | 0 / 0 | vs | 0 / 0 |
| MISC | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| On-Screen Display | Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up | vs | Graphical Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up |
| Detachable Power Cord | vs | ||
| uport | vs | ||
| ONKYO-RI System Control | vs | ||
| RIHD (Remote Interactive Over HDMI) | vs | ||
| Pre-Pro/Learning Remote | / | vs | / |
| On Screen Remote Programming | vs | ||
| Bi-directional Remote Setup via GUI | vs | ||
| Smart Grid-Ready | vs |
| RADIO | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| Analog Tuner | FM/AM | vs | FM/AM |
| Presets | 40 | vs | 40 |
| Digital Radio | vs | ||
| Internet Radio | TuneIn | vs | TuneIn |
| Pandora | vs | ||
| Spotify | vs | ||
| Tidal | vs | ||
| Deezer | vs | ||
| Napster | vs | ||
| SiriusXM Internet Radio | vs |
| CONSTRUCTION | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| Solid Aluminum Front | vs | ||
| Speaker Terminals | 9 | vs | 9 |
| Large Speaker Terminals | 9 | vs | 9 |
| Color-Coded Speaker Terminals | vs | ||
| Transparent High-Grade Speaker Terminals | vs | ||
| 18mm Pitch High Grade Pre-outs | vs | ||
| 19mm-Pitch Audio Inputs | vs | ||
| Gold plated RCA terminals | vs |
| POWER | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| Power Supply | AC 120 V, 60 Hz | vs | AC 120 V, 60 Hz |
| Independent Power Supply | vs | 2 | |
| H.C.P.S. (High Current Power Supply) | Massive High Power Transformer | vs | Massive High Power Transformer |
| Toroidal Transformer | vs | ||
| Power Consumption | 460 W | vs | 4.3 A |
| No Sound Power | 55 W | vs | 60 W |
| Standby Power | 0.1 W | vs | 0.1 W |
| GENERAL | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| ECO Mode / Hybrid Standby Function | vs | ||
| Dimensions (W x H x D) | 435 mm x 173.5 mm x 378 mm 17-1/8" x 6-13/16" x 14-7/8" | vs | 435 mm x 173.5 mm x 329 mm 17-1/8" x 6-13/16" x 12-15/16" |
| Weight | 9.4 kg (20.7 lbs) | vs | 8.9 kg (19.0 lbs) |
| Warranty | 2 Years | vs | 2 Years |
| SPECS | Onkyo TX-NR555 | vs | Onkyo TX-NR545 |
|---|---|---|---|
| Power Output (8 Ω, 20 Hz - 20 kHz, 2 | 80 W (0.08% THD) | vs | 65 W (0.7% THD) |
| Power Output (6 Ω, 1 kHz, 1 channel driven, FTC) | 140 W (0.9% THD) | vs | 115 W (0.9% THD) |
| Dynamic Power per Channel (3 Ω, Front) | 160 W | vs | 160 W |
| Dynamic Power per Channel (4 Ω, Front) | 125 W | vs | 125 W |
| Dynamic Power per Channel (8 Ω, Front) | 85 W | vs | 85 W |
| THD | 0.08% (20 Hz - 20 kHz, Half power) | vs | 0.08% (20 Hz - 20 kHz, half power) |
| Input Sensitivity and Impedance (Line) | 200 mV/47 kΩ (1 kHz, 100 W/8 Ω) | vs | 200 mV/47 kΩ (LINE, 1 kHz 100 W/8 Ω) |
| S/N Ratio (Line, IHF-A) | 106 dB | vs | 100 dB |
| Frequency Response (Analog In) | 10 Hz - 100 kHz/+1 dB, -3 dB (Direct) | vs | 10 Hz - 100 kHz/+1 dB, -3 dB (Direct mode) |
| DSD Sampling Rates via HDMI | 2.8 MHz | vs | 2.8 MHz, 5.6 MHz |
| DSD Sampling Rates via USB | 2.8 MHz, 5.6 MHz | vs | 2.8 MHz, 5.6 MHz |
| Video Input Sensitivity/Output Level and Impedance | 1 Vp-p/75 Ω (Component Y) 0.7 Vp-p/75 Ω (Component PB/CB, PR/CR) 1 Vp-p/75 Ω (Composite) | vs | 1 Vp-p/75 Ω (Component Y) 0.7 Vp-p/75 Ω (Component PB/CB, PR/CR) 1 Vp-p/75 Ω (Composite) |
| Ethernet Standard | 10BASE-T/100BASE-TX | vs | 10BASE-T/100BASE-TX |
| Wi-Fi Standard | IEEE 802.11 a/b/g/n | vs | IEEE 802.11 b/g/n |
| Wi-Fi Terminal Frequency | 5 GHz, 2.4 GHz | vs | 2.4 GHz |
| Bluetooth Version | 4.1 + LE | vs | 2.1 + EDR |
| Bluetooth Frequency | 2.4 GHz | vs | 2.4 GHz |
| USB Terminal | 5 V, 1 A | vs | 5 V, 1 A |
| FM Frequency | 87.5 MHz - 107.9 MHz | vs | 87.5 MHz - 107.9 MHz |
| AM Frequency | 530 kHz - 1710 kHz | vs | 522/530 kHz - 1611/1710 kHz |
* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted
