Onkyo TX-NR545 (USA version)

•   Overview
•   Pros and Cons
•   Predecessor
•   Audio Section
•   Video Section
•   Multi-zone Playback
•   Inputs and Outputs
•   Specifications
•   Successor

Onkyo TX-NR545 was introduced in 2015. It is equipped with 7 channel amplifier with 65 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 7.1 maximum channel processing. It supports Dolby Atmos, passes 4K/60Hz video signal.

We evaluated the a/v receiver and gave 78 overall score out of 100. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

In this section we present pros and cons of Onkyo TX-NR545.

Here we are comparing Onkyo TX-NR545 to its predecessor TX-NR535 and displaying the major changes.

UPGRADES	Onkyo TX-NR545	vs	Onkyo TX-NR535
More Channels	7.2	vs	5.2
Higher DAC Specs	384 kHz/32 Bit	vs	192 kHz/24 Bit
More Channel Processing	7.1	vs	5.1
Dolby Atmos	up to with firmware update	vs
Dolby Surround Upmixer		vs
DTS-ES		vs
Music Playback via USB	FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TrueHD	vs	FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM
Phase-Matching Bass Boost	for Deep Bass and Clear Mid-Range	vs
More Advanced Auto Speaker Calibration System	AccuEQ Advance	vs	AccuEQ
HDR10		vs
Analog To HDMI Upconversion	Component**, Composite	vs
AirPlay	AirPlay	vs	AirPlay via optional Onkyo RI Dock DS-A5 (sold separately)
More RCA Line Inputs	8 (1 front)	vs	7 (1 front)
More Optical Outputs		vs
More Component Video Inputs	2	vs	1
More Powered Zones	2	vs
Deezer		vs
More Speaker Terminals	9	vs	5
More Large Speaker Terminals	9	vs	5
Bigger Power Supply	4.3 A	vs	3.2 A
Lower THD	0.08% (20 Hz - 20 kHz, half power)	vs	0.7% (20 Hz - 20 kHz, Half power)

DOWNGRADES	Onkyo TX-NR545	vs	Onkyo TX-NR535
Dolby Pro Logic		vs	PLII
InstaPrevue Input Source Prevue		vs
Less Coaxial Inputs/Outputs	1	vs	2
Less Composite Video Outputs		vs	1
Less Component Video Outputs		vs	1
Front A/V Inputs	Composite Video, RCA Audio	vs	USB, Composite Video, RCA audio
Color-Coded Speaker Terminals		vs
Lower Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	100 W (1% THD)	vs	115 W (0.9% THD)

For more detailed comparison between the models please visit Onkyo TX-NR545 vs Onkyo TX-NR535.

7 channel Amplifier

Onkyo TX-NR545 features 7 channel power amplifier. It is rated at 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).

• WRAT (Wide Range Amp Technology): 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.

Speaker Configurations

Onkyo TX-NR545's 7 channel amplifier can be assigned for different speaker configurations.

• Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
5.2.2 with internal amplifier.
• Configurations without height channels: There are also other speaker configurations available which do not include height channels:
5.2, 7.2 with internal amplifier.

Dolby Atmos

Onkyo TX-NR545 supports Dolby Atmos. It is a cinematic audio format in which sounds exist as individual entities, called audio objects. In Dolby Atmos, any sound 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. 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.

• Dolby Surround Upmixer: 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.

Sound Processing

• Advanced Music Optimizer: Compressed music enhancement in 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.

Room Calibration

Onkyo TX-NR545 comes with AccuEQ Advance room correction system and includes the calibration microphone.

• AccuEQ: First, AccuEQ detects the presence of speakers and evaluates the impedance of each. Next, it pinpoints their distance relative to the main listening position using the mic and sets suitable sound-pressure levels. Then it selects the optimal crossover frequency so that deeper bass rolls smoothly off to the subwoofer. Finally, AccuEQ performs frequency response equalization based on room-acoustic and speaker data collected via microphone. The sound-field is now tailored around the listening position, resulting in a more immersive and realistic in-film experience.

HDMI

Onkyo TX-NR545 features 6 HDMI inputs. It has 1 output.

• 4K/60Hz Passthrough: All inputs pass up to 4K/60p (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit) video signal.
• Analog To HDMI Upconversion: The a/v receiver supports video upconversion, so you can connect your analog Component and Composite video sources and Onkyo TX-NR545 will output them via HDMI. This means that you will need only one HDMI cable to connect to your TV.
• HDCP 2.2 Copy Protection: 3 inputs and 1 output are HDCP 2.2 compliant which is a requirement for 4K/HDR copy-protected content transmission.
• 3D Ready: Onkyo TX-NR545 is able to pass 3D video through HDMI.

andh3>HDR (High Dynamic Range)

Onkyo TX-NR545 supports HDR (high dynamic range) video formats such as HDR10. High dynamic range video has greater dynamic range than standard dynamic range (SDR) video with brighter whites and deeper blacks. The result is greater contrast and more details in dark and bright areas, better color and depth.

• HDR10: HDR10 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 10-bit color which corresponds to 1024 shades of the primary RGB colors. It is technically limited to a maximum of 10,000 nits peak brightness, however common HDR10 contents are mastered with peak brightness from 1,000 to 4,000 nits.

Onkyo TX-NR545 offers multi-zone playback which allows you to play different input sources in 2 different rooms.

Zone 2

• Powered Zone 2: You can use the unit's 2 amplifier channels by connecting Zone 2 speakers directly to the speaker terminals. The remaining 5 channels will be left for main zone amplification.
• Audio Line Output: If you have a dedicated integrated amplifier for Zone 2 you can connect it to the a/v receiver via line outs by sending fixed signal and then control volume on the Zone 2 amplifier.

Audio

• Analog Line Inputs and Outputs: There are 8 line inputs and 1 line output for analog audio connection.
• Digital Inputs and Outputs: 0 optical input, 2 optical outputs and 1 coaxial input are available for digital audio connection.
• Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel.

Video

• HDMI:
Inputs: 6   Outputs: 1
8K Inputs: 0
• Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
Inputs: 4   Outputs: 0
• Component Video: Component video connection gives you the higher quality video compared to the composite video connection. So in case your old DVD player and other equipment do not have an HDMI output but have Component video output use this connection over the composite one. Onkyo TX-NR545 supports up to 480i/576i resolution on Component video connectors.
Inputs: 2   Outputs: 0

Here we list all the available features and specifications of Onkyo TX-NR545.

BASICS
Brand	Onkyo
Model	TX-NR545
Type	A/V Receiver
Country	USA
Release Year	2015

AMPLIFIER
Channels	7.2
Front Wide Channel Support
WRAT (Wide Range Amplifier Technology)
VLSC (Vector Linear Shaping Circuitry)
Optimum Gain Volume Circuitry
THX™ Certification
Continuous 6 Ω Rated
Certified 4 Ω Performance
Discrete Output Stage Circuitry
3-Stage Inverted Darlington Circuitry
PUSH-PULL Design
Independent Block Construction (Amp/Preprocessor)
Bi-amp Capability
BTL (Bridged Transless or Bridging)

AUDIO
Digital Signal Processing (DSP) Engine	Advanced 32-bit DSP Chip
DAC	Asahi Kasei AK4458
DAC Specs	384 kHz/32 Bit
Maximum Channel Processing	7.1
Air Studios Monitor Certification
Dolby Atmos	up to with firmware update
Dolby Atmos Height Virtualization
Dolby Atmos Music
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Pro Logic
Surround EX
DTS:X
DTS Neural:X
DTS Virtual:X
DTS Neo	Neo:6
DTS-HD Master Audio
DTS-HD High Resolution Audio
DTS 96/24
DTS Express
DTS-ES
IMAX Enhanced
Auro 3D with Auro-Matic Upmixer
PCM	2-ch/Multi-ch Input
Music Playback via USB	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 96 kHz
High Resolution Audio Formats via USB	FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC
Gapless Playback
DSD via HDMI	2-ch/Multi-ch Input
DSD via USB	2-ch Input
DSD to PCM Converter
USB DAC
Jitter Reduction	PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio
DTS Dialog Control
Dialog Enhancement
Dialog Level Adjustment
Dialog Normalization
Dialogue Lift
Tone Control	Front L/R Channels
Compressed Music Enhancer	Advanced Music Optimizer (bluetooth included)
High-resolution Music Enhancer
THX Processing Mode
Audyssey Dynamic EQ
Audyssey Dynamic Volume
Audyssey LFC
Audyssey Sub EQ HT
Audyssey DSX
Phase-Matching Bass Boost	for Deep Bass and Clear Mid-Range
Direct Mode
Pure Audio Mode
Pure Direct Analog Path Mode
Virtual Speakers	T-D (Theater-Dimensional)
Independent Subwoofer Outputs

CALIBRATION
Auto Speaker Calibration System with Mic.	AccuEQ Advance

VIDEO
Enhanced ARC
HDCP Version	2.2 (3 inputs / 1 output)
HDR10
HDR10+
Dynamic HDR
Dolby Vision
HLG (Hybrid Log Gamma)
BT.2020 color space
QMS (Quick Media Switching)
ALLM (Auto Low Latency Mode)
VRR (Variable Refresh Rate)
QFT (Quick Frame transport)
3-D Ready
Video Signal Passthrough	up to 4K/60p (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit)
Video Signal Upscaling
Analog To HDMI Upconversion	Component**, Composite
Component Video Upscaling
Analog to Analog Video conversion
Component Video Maximum Resolution	480i/576i
isf Certified Calibration Control

CONNECTIVITY
MHL Input
DLNA 1.5
FireConnect
FlareConnect
Chromecast Built-In
DTS Play-Fi
Works with Amazon Alexa
Works with SONOS
AirPlay	AirPlay
Apple Product Connection	iPod, iPhone and iPad
Remote App	Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices
InstaPrevue Input Source Prevue
Ethernet
Ethernet Switch
Wi-Fi
Bluetooth
HDBaseT Compatible
HDMI Inputs	6
HDMI Outputs	1
8K Inputs
USB Input	1 (Rear)
USB DC Out Port
RCA Line Input	8 (1 front)
RCA Line Output	1
XLR Line Inputs
Phono Input
Optical Inputs	2
Optical Outputs
Coaxial Inputs	1
Composite Video Input	4 (1 front)
Composite Video Output
S-Video Input
S-Video Output
Component Video Input	2
Component Video Output
PC In
Multi-Channel Input
RCA Pre-Outs	0.2
XLR Pre-outs
Front A/V Inputs	Composite Video, RCA Audio
Speaker A/B
Headphone Out	6.3 mm (1/4")

ZONES
Zones	2
Powered Zones	2
Zone 2 Outs	RCA Line Out
Whole House Mode
RS-232C Interface
+12V Trigger Output	0
Remote (IR) Input/Output	0 / 0

MISC
On-Screen Display	Graphical Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up
Detachable Power Cord
uport
ONKYO-RI System Control
RIHD (Remote Interactive Over HDMI)
Pre-Pro/Learning Remote	/
On Screen Remote Programming
Bi-directional Remote Setup via GUI
Smart Grid-Ready

RADIO
Analog Tuner	FM/AM
Presets	40
Digital Radio
Internet Radio	TuneIn
Pandora
Spotify
Tidal
Deezer
Napster
SiriusXM Internet Radio

CONSTRUCTION
Solid Aluminum Front
Speaker Terminals	9
Large Speaker Terminals	9
Color-Coded Speaker Terminals
Transparent High-Grade Speaker Terminals
18mm Pitch High Grade Pre-outs
19mm-Pitch Audio Inputs
Gold plated RCA terminals

POWER
Power Supply	AC 120 V, 60 Hz
Independent Power Supply	2
H.C.P.S. (High Current Power Supply)	Massive High Power Transformer
Toroidal Transformer
Power Consumption	4.3 A
No Sound Power	60 W
Standby Power	0.1 W

GENERAL
ECO Mode / Hybrid Standby Function
Dimensions (W x H x D)	435 mm x 173.5 mm x 329 mm 17-1/8" x 6-13/16" x 12-15/16"
Weight	8.9 kg (19.0 lbs)
Warranty	2 Years

SPECS
Power Output (8 Ω, 20 Hz - 20 kHz, 2	65 W (0.7% THD)
Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)	115 W (0.9% THD)
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA)	120 W
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	100 W (1% THD)
Dynamic Power per Channel (3 Ω, Front)	160 W
Dynamic Power per Channel (4 Ω, Front)	125 W
Dynamic Power per Channel (8 Ω, Front)	85 W
THD	0.08% (20 Hz - 20 kHz, half power)
Damping Factor	60 (Front, 1 kHz, 8 Ω)
Input Sensitivity and Impedance (Line)	200 mV/47 kΩ (LINE, 1 kHz 100 W/8 Ω)
S/N Ratio (Line, IHF-A)	100 dB
Frequency Response (Analog In)	10 Hz - 100 kHz/+1 dB, -3 dB (Direct mode)
DSD Sampling Rates via HDMI	2.8 MHz, 5.6 MHz
DSD Sampling Rates via USB	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)
Ethernet Standard	10BASE-T/100BASE-TX
Wi-Fi Standard	IEEE 802.11 b/g/n
Wi-Fi Terminal Frequency	2.4 GHz
Bluetooth Version	2․1 + EDR
Bluetooth Frequency	2.4 GHz
USB Terminal	5 V, 1 A
FM Frequency	87.5 MHz - 107.9 MHz
AM Frequency	522/530 kHz - 1611/1710 kHz

* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted

In 2016 Onkyo TX-NR545 was replaced by TX-NR555. Let us now have a look at some important changes that the successor brought.

UPGRADES	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
Dolby Vision		vs
BT.2020 color space		vs
Video Signal Upscaling	1080p to 4K	vs
FireConnect		vs
FlareConnect		vs
Chromecast Built-In		vs
More Optical Inputs	2	vs	2
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

DOWNGRADES	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
Less RCA Line Inputs	7 (1 Front)	vs	8 (1 front)
Less RCA Line Outputs		vs	1
Less 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
Lower DSD Sampling Rate via HDMI	2.8 MHz	vs	2.8 MHz, 5.6 MHz
Narrower AM Frequency Range	530 kHz - 1710 kHz	vs	522/530 kHz - 1611/1710 kHz

For more detailed comparison between the models please visit Onkyo TX-NR545 vs Onkyo TX-NR555.