Here we are comparing Onkyo TX-NR757 to Onkyo TX-NR747 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 and equally powerful amplifiers.

Let us have a look at some highlights of the models.

We have evaluated both receivers. Onkyo TX-NR757 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.

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...

This section shows those features and specifications which are the reason to choose Onkyo TX-NR757 over Onkyo TX-NR747.

Onkyo TX-NR757 has higher DSD sampling rate via USB, higher wi-fi standard and higher bluetooth standard. It supports Tidal. In video department only Onkyo TX-NR757 supports Dolby Vision.

	Onkyo TX-NR757	Onkyo TX-NR747
VLSC (Vector Linear Shaping Circuitry)	✔ Front L/R channels	✖
DTS Neural:X	✔ after firmware update	✔ after firmware update
Higher Resolution Music Playback via USB	✔ up to 192 kHz	✔ up to 96 kHz
High Resolution Audio Formats via USB	FLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD	FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC
Dialog Normalization	✔	✖
BT.2020 color space	✔	✔
Dolby Vision	✔ via firmware update	✖
Video Signal Upscaling	✔ 1080p to 4K	✖
FireConnect	✔	✖
FlareConnect	✔	✖
Chromecast Built-In	✔	✖
Front A/V Inputs	HDMI, Mini-Jack	HDMI
RS-232 Interface	✔	✖
+12V Trigger Output	1 (MAIN, 100 mA)	0
Remote (IR) Input/Output	1 / 0	0 / 0
Tidal	✔	✖
Higher Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)	180 W (0.9% THD)	175 W (0.9% THD)
Higher DSD Sampling Rate via USB	2.8 MHz, 5.6 MHz	2.8 MHz, 5.6 MHz
Wi-Fi Standard	IEEE 802.11 a/b/g/n	IEEE 802.11 b/g/n
Wi-Fi Terminal Frequency	5 GHz, 2.4 GHz	2.4 GHz
Newer Bluetooth Version	4.1 + LE	2.1 + EDR

This section shows those features and specifications which are the reason to choose Onkyo TX-NR747 over Onkyo TX-NR757.

Onkyo TX-NR747 has bigger power supply.

	Onkyo TX-NR757	Onkyo TX-NR747
Music Playback via USB	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD	FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TrueHD
Pure Audio Mode	✖	✔
InstaPrevue Input Source Prevue	✖	✔
More Analog Audio Line Outputs	✖	1
More Composite Video Inputs	2	3
Whole House Mode	✖	✔
ONKYO-RI System Control	✖	✔
Pre-Pro/Learning Remote	No / No	✔ / No
Analog Tuner	✔ FM/AM	✔ FM/AM with RDS
Independent Power Supply	✖	2
Bigger Power Supply	600 W	710 W
Higher DSD Sampling Rate via HDMI	2.8 MHz	2.8 MHz, 5.6 MHz
Wider AM Frequency Range	530 kHz - 1710 kHz	522/530 kHz - 1611/1710 kHz

Onkyo TX-NR757 and Onkyo TX-NR747 share common strengths such as Dolby Atmos support, DTS:X support, HDR10, ethernet connection, wi-fi, bluetooth, phono input, internet radio, Pandora, Spotify and Deezer.

STRENGTHS	Onkyo TX-NR757	Onkyo TX-NR747
Dolby Atmos	✔ up to 5.1.2	✔ up to 5.1.2
DTS:X	✔ up to 5.1.2	✔ up to 5.1.2 after firmware update
DSD via HDMI	✔ 2-ch/Multi-ch Input	✔ 2-ch/Multi-ch Input
DSD via USB	✔ 2-ch Input	✔ 2-ch Input
DTS Dialog Control	✔	✔
HDR10	✔	✔
4K or 8K Video Passthrough	up to 4K/60p (RGB/YCbCr4:4:4)	up to 4K/60p (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit)
Ethernet	✔	✔
Wi-Fi	✔	✔
Bluetooth	✔ SBC, AAC	✔
New HDCP Version	2.2 (3 in / 2 out)	2.2 (3 in / 2 out)
Many HDMI Inputs	8 (1 front)	8 (1 front)
USB Input	1 (Rear)	1 (Rear)
Many Analog Audio Line Inputs	7 (1 Front)	7
Phono Input	✔	✔
Composite Video Inputs	2	3
Component Video Inputs	2	2
Zones	2	2
Analog Tuner	✔ FM/AM	✔ FM/AM with RDS
Internet Radio	✔ TuneIn	✔ TuneIn
Pandora	✔	✔
Spotify	✔	✔
Deezer	✔	✔

Onkyo TX-NR757 and Onkyo TX-NR747 share common weaknesses such as no front wide channel support, no Auro3D support, no MHL input, no DTS Play-Fi, no Amazon Alexa, no SONOS, no analog multi-channel input, no analog pre-outs, no Napster, no SiriusXM and no toroidal transformer.

WEAKNESSES	Onkyo TX-NR757	Onkyo TX-NR747
No Front Wide Channel Support	✖	✖
No Dolby Atmos Height Virtualization	✖	✖
No DTS Virtual:X	✖	✖
No IMAX Enhanced	✖	✖
No Auro 3D with Auro-Matic Upmixer	✖	✖
No Audyssey Dynamic EQ	✖	✖
No Audyssey Dynamic Volume	✖	✖
No Audyssey LFC	✖	✖
No Audyssey Sub EQ HT	✖	✖
No HDR10+	✖	✖
No Dynamic HDR	✖	✖
No Auto Low Latency Mode Pass-through	✖	✖
No VRR	✖	✖
No QFT	✖	✖
No MHL Input	✖	✖
No DTS Play-Fi	✖	✖
Does not Work with Amazon Alexa	✖	✖
Does Not Work with SONOS	✖	✖
No eARC	✖	✖
No Multi-Channel Input	✖	✖
No Analog Pre-Outs	0.2	0.2
No Napster	✖	✖
No SiriusXM Internet Radio	✖	✖
No Toroidal Transformer	✖	✖

Amplifier

Onkyo TX-NR757 and Onkyo TX-NR747 have 7 channel amplifiers. They both deliver 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and have stable performance at 4 Ω load.

Video Features

Both receivers support 4K passthrough up to 60p. Onkyo TX-NR757 can do 4K upscaling. Onkyo TX-NR757 supports HDR10, Dolby Vision and Onkyo TX-NR747 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-NR757 and Onkyo TX-NR747 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-NR757 and Onkyo TX-NR747 support DTS:X with its Neural:X upmixer. Both of them 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-NR757 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-NR747 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.

THX™ Certification

Onkyo TX-NR757 and Onkyo TX-NR747 are THX™ certified which offers optimal performance, superior quality and seamless integration. THX works with partners from the ground up, so that certified products deliver professional quality audio-visual experiences right out of the box. They only certify the very best products with uncompromised quality, performance and consistency. They ensure that THX certified devices play well with lower performing devices and components. THX listening modes make the receiver to have one speaker set up for movies, music and games. They are tested for power output, bass management, signal-to-noise ratio and feature RE-EQ, timbre matching, boundary gain compensation and THX Loudness Plus.

Advanced Music Optimizer

Compressed music enhancement in Onkyo TX-NR757 and Onkyo TX-NR747 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-NR757 and Onkyo TX-NR747 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-NR757

Onkyo TX-NR757 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 8 HDMI inputs with HDCP 2.2 (3 in / 2 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 HDMI and Mini-Jack inputs.

Onkyo TX-NR747

Onkyo TX-NR747 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 8 HDMI inputs with HDCP 2.2 (3 in / 2 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 HDMI input.

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-NR757 and here - Onkyo TX-NR747.

BASICS	Onkyo TX-NR757	Onkyo TX-NR747
Brand	Onkyo	Onkyo
Model	TX-NR757	TX-NR747
Type	A/V Receiver	A/V Receiver
Country	North America	Europe
Release Year	2016	2015

AMPLIFIER	Onkyo TX-NR757	Onkyo TX-NR747
Channels	7.2	7.2
Front Wide Channel Support	✖	✖
VLSC (Vector Linear Shaping Circuitry)	✔ Front L/R channels	✖
Optimum Gain Volume Circuitry	✔	✔
THX™ Certification	✔ Select™2 Plus	✔ Select™2 Plus
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	Onkyo TX-NR757	Onkyo TX-NR747
Digital Signal Processing (DSP) Engine	32-bit Digital Signal Processing Enginess	Dual 32-bit DSP for Powerful Advanced Processing
DAC	AKM AK4458 (8 Channels x 1)	Asahi Kasei AK4458
Maximum Channel Processing	7.1	7.1
Air Studios Monitor Certification	✖	✖
Dolby Atmos	✔ up to 5.1.2	✔ up to 5.1.2
Dolby Atmos Height Virtualization	✖	✖
Dolby TrueHD	✔	✔
Dolby Digital Plus	✔	✔
Dolby Surround Upmixer	✔	✔
Dolby Pro Logic	✖	✖
Surround EX	✔ also known as Dolby Digital Surround EX	✔ also known as Dolby Digital Surround EX
DTS:X	✔ up to 5.1.2	✔ up to 5.1.2 after firmware update
DTS Neural:X	✔ after firmware update	✔ after firmware update
DTS Virtual:X	✖	✖
DTS Neo	✔ Neo:6 until firmware update	✔ Neo:6 until firmware update
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	✔ 2-ch/Multi-ch Input
Music Playback via USB	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD	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	✔ up to 96 kHz
High Resolution Audio Formats via USB	FLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD	FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC
Multi-Channel Music File Playback via USB	✖	✖
Gapless Playback	✔	✔
DSD via HDMI	✔ 2-ch/Multi-ch Input	✔ 2-ch/Multi-ch Input
DSD via USB	✔ 2-ch Input	✔ 2-ch Input
DSD to PCM Converter	✖	✖
USB DAC	✖	✖
Jitter Reduction	✔ PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio	✔ PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio
DTS Dialogue Control	✔	✔
Dialog Enhancement	✖	✖
Dialog Normalization	✔	✖
Dialogue Lift	✖	✖
Tone Control	✔ Front L/R Channels	✔ Front L/R Channels
Compressed Music Enhancer	✔ Advanced Music Optimizer (bluetooth included)	✔ 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)	✔ T-D (Theater-Dimensional)

CALIBRATION	Onkyo TX-NR757	Onkyo TX-NR747
Auto Speaker Calibration System with Mic.	✔ AccuEQ with AccuReflex™	✔ Advanced AccuEQ

VIDEO	Onkyo TX-NR757	Onkyo TX-NR747
HDR10	✔	✔
HDR10+	✖	✖
Dynamic HDR	✖	✖
BT.2020 color space	✔	✔
Dolby Vision	✔ via firmware update	✖
Hybrid Log Gamma (HLG)	✖	✖
Quick Media Switching (QMS)	✖	✖
Auto Low Latency Mode (ALLM)	✖	✖
Variable Refresh Rate (VRR)	✖	✖
Quick Frame Transport (QFT)	✖	✖
3-D Ready	✔	✔
Video Signal Passthrough	up to 4K/60p (RGB/YCbCr4:4:4)	up to 4K/60p (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit)
Video Signal Upscaling	✔ 1080p to 4K	✖
Analog To HDMI Upconversion	✔ Component**, Composite	✔ Component**, Composite
Component Video Upscaling	✖	✖
Analog to Analog Video conversion	✖	✖
Component Video Maximum Resolution	480i/576i	480i/576i
isf Certified Calibration Control	✖	✖

CONNECTIVITY	Onkyo TX-NR757	Onkyo TX-NR747
MHL Input	✖	✖
FireConnect	✔	✖
FlareConnect	✔	✖
Chromecast Built-In	✔	✖
DTS Play-Fi	✖	✖
Works with Amazon Alexa	✖	✖
Works with SONOS	✖	✖
AirPlay	✔ AirPlay	✔ AirPlay
Apple Product Connection	✔ iPod, iPhone and iPad	✔ iPod, iPhone and iPad
Remote App	Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices	Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices
InstaPrevue Input Source Prevue	✖	✔
Ethernet	✔	✔
Ethernet Switch	✖	✖
Wi-Fi	✔	✔
Bluetooth	✔ SBC, AAC	✔
HDBaseT Compatible	✖	✖
Enhanced Audio Return Channel (eARC)	✖	✖
HDCP Version	2.2 (3 in / 2 out)	2.2 (3 in / 2 out)
HDMI Inputs	8 (1 front)	8 (1 front)
HDMI Outputs	2 (simultaneous)	2 (simultaneous)
USB Input	1 (Rear)	1 (Rear)
USB DC Out Port	✖	✖
Analog Audio Line Inputs	7 (1 Front)	7
Analog Audio Line Outputs	✖	1
Phono Input	✔	✔
Optical Inputs	2	2
Optical Outputs	✖	✖
Coaxial Inputs/Outputs	1 / No	1 / No
Composite Video Inputs	2	3
Composite Video Outputs	✖	✖
S-Video Inputs	✖	✖
S-Video Outputs	✖	✖
Component Video Inputs	2	2
Component Video Outputs	✖	✖
PC In	✖	✖
Multi-Channel Input	✖	✖
Analog Pre-Outs	0.2	0.2
XLR Inputs	✖	✖
XLR Pre-outs	✖	✖
Front A/V Inputs	HDMI, Mini-Jack	HDMI
Speaker A/B	✖	✖
Headphone Out	✔ 6.3 mm	✔ 6.3 mm

ZONES	Onkyo TX-NR757	Onkyo TX-NR747
Zones	2	2
Powered Zones	✔ 2 (and Zone 2 A/B)	✔ 2
Zone 2 Outs	RCA Line Out	RCA Line Out
Whole House Mode	✖	✔
RS-232 Interface	✔	✖
+12V Trigger Output	1 (MAIN, 100 mA)	0
Remote (IR) Input/Output	1 / 0	0 / 0

MISC	Onkyo TX-NR757	Onkyo TX-NR747
On-Screen Display	✔ Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up	✔ 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	No / No	✔ / No
Smart Grid-Ready	✔	✔

RADIO	Onkyo TX-NR757	Onkyo TX-NR747
Analog Tuner	✔ FM/AM	✔ FM/AM with RDS
Presets	40	40
Digital Radio	✖	✖
Internet Radio	✔ TuneIn	✔ TuneIn
Pandora	✔	✔
Spotify	✔	✔
Tidal	✔	✖
Deezer	✔	✔
Napster	✖	✖
SiriusXM Internet Radio	✖	✖

CONSTRUCTION	Onkyo TX-NR757	Onkyo TX-NR747
Solid Aluminum Front	✖	✖
Speaker Terminals	9	9
Large Speaker Terminals	9	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	Onkyo TX-NR757	Onkyo TX-NR747
Power Supply	AC 120 V, 60 Hz	AC 220-240 V, 50/60 Hz
Independent Power Supply	✖	2
H.C.P.S. (High Current Power Supply)	✔ Massive High Power Transformer	✔ Massive High Power Transformer
Toroidal Transformer	✖	✖
Power Consumption	600 W	710 W
No Sound Power	80 W	75 W
Standby Power	0.1 W	0.15 W

GENERAL	Onkyo TX-NR757	Onkyo TX-NR747
ECO Mode / Hybrid Standby Function	✔	✔
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"	435 mm x 175 mm x 379 mm 17-1/8" x 6-7/8" x 14-15/16"
Weight	10.5 kg (23.1 lbs)	11.5 kg (25.4 lbs)
Warranty	2 Years	2 Years

SPECS	Onkyo TX-NR757	Onkyo TX-NR747
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)	110 W (0.08% THD)	110 W (0.08% THD)
Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)	180 W (0.9% THD)	175 W (0.9% THD)
Dynamic Power per Channel (3 Ω, Front)	250 W	250 W
Dynamic Power per Channel (4 Ω, Front)	220 W	220 W
Dynamic Power per Channel (8 Ω, Front)	130 W	130 W
THD	0.08% (20 Hz - 20 kHz, Half power)	0.08% (20 Hz - 20 kHz, Half power)
Input Sensitivity and Impedance (Line)	200 mV/47 kΩ (1 kHz, 100 W/8 Ω)	200 mV/47 kΩ (Line)
Input Sensitivity and Impedance (Phono MM)	3.5 mV/47 kΩ	3.5 mV/47 kΩ (PHONO mm)
Phono Overload	70 mV (MM, 1 kHz 0.5%)	70 mV (MM, 1 kHz 0.5% Direct)
S/N Ratio (Line, IHF-A)	106 dB	106 dB
S/N Ratio (Phono MM, IHF-A)	80 dB	80 dB
Frequency Response (Analog In)	10 Hz - 100 kHz/+1 dB, -3 dB (Direct)	10 Hz - 100 kHz/+1 dB, -3 dB (Direct mode)
DSD Sampling Rates via HDMI	2.8 MHz	2.8 MHz, 5.6 MHz
DSD Sampling Rates via USB	2.8 MHz, 5.6 MHz	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)	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	10BASE-T/100BASE-TX
Wi-Fi Standard	IEEE 802.11 a/b/g/n	IEEE 802.11 b/g/n
Wi-Fi Terminal Frequency	5 GHz, 2.4 GHz	2.4 GHz
Bluetooth Version	4.1 + LE	2.1 + EDR
Bluetooth Frequency	2.4 GHz	2.4 GHz
USB Terminal	5 V, 1 A	5 V, 1 A
FM Frequency	87.5 MHz - 107.9 MHz	87.5 MHz - 108.0 MHz
AM Frequency	530 kHz - 1710 kHz	522/530 kHz - 1611/1710 kHz

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