Onkyo TX-NR797 vs Onkyo TX-NR757

Here we are comparing Onkyo TX-NR797 to Onkyo TX-NR757 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. The Onkyo TX-NR797 has 9 channel and the Onkyo TX-NR757 has 7 channel amplifiers with Onkyo TX-NR797's being less powerful.

Onkyo TX-NR797	Onkyo TX-NR757
Onkyo TX-NR797 was introduced in 2019. It is equipped with 9 channel amplifier with 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 9.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz and upscales 1080p to 4K video signal.	Onkyo TX-NR757 was introduced in 2016. It is equipped with 7 channel amplifier with 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 7.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz and upscales 1080p to 4K video signal.

We evaluated Onkyo TX-NR797 and Onkyo TX-NR757 and gave them scores of 91 and 88 out of 100 recpectively. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

For more details about the ranking please go to    Evaluations section.

This section shows those features and specifications which are the reason to choose Onkyo TX-NR797 over Onkyo TX-NR757.

	Onkyo TX-NR797	vs	Onkyo TX-NR757
More Channels	9.2	vs	7.2
More Channel Processing	9.1	vs	7.1
Dolby Atmos Height Virtualization		vs
DTS Virtual:X	via future firmware update	vs
IMAX Enhanced	via future firmware update	vs
More Tone Control Channels	All Channels	vs	Front L/R Channels
More Advanced Auto Speaker Calibration System	AccuEQ Advance with AccuReflex™	vs	AccuEQ with AccuReflex™
HLG		vs
Newer HDCP Version	2.3	vs	2.2 (3 inputs / 2 outputs)
Works with SONOS		vs
DTS Play-Fi	via Onkyo Music Control app	vs
AirPlay	AirPlay 2 after firmware update	vs	AirPlay
More HDMI Outputs	2 (1 Main, 1 Sub/Zone2)	vs	2 (simultaneous)
More Zones	3	vs	2
More Powered Zones	2 and 3	vs	2 (and Zone 2 A/B)
Zone 2 Outs	HDMI, RCA Line Out (shared with Zone B)	vs	RCA Line Out
Bigger Power Supply	750 W	vs	600 W
Higher DSD Sampling Rate via USB	2.8 MHz, 5.6 MHz, 11.2 MHz	vs	2.8 MHz, 5.6 MHz
Newer Bluetooth Version	4․2	vs	4․1 + LE

This section shows those features and specifications which are the reason to choose Onkyo TX-NR757 over Onkyo TX-NR797.

	Onkyo TX-NR797	vs	Onkyo TX-NR757
Higher Power Output	100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)	vs	110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
Optimum Gain Volume Circuitry		vs
THX™ Certification	Select™ (previously known as Select2)	vs	Select™2 Plus
DTS Neo		vs	Neo:6 until firmware update
More HDMI Inputs	7 (1 front)	vs	8 (1 front)
More Optical Inputs	1	vs	2
More Component Video Inputs	1	vs	2
Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)	100 W (0.08% THD)	vs	110 W (0.08% THD)

We already listed pros and cons of each model. However, you may also find useful to look at their common strengths and weaknesses shown side-by-side.

STRENGTHS	Onkyo TX-NR797	Onkyo TX-NR757
THX™ Certification	Select™ (previously known as Select2)	Select™2 Plus
Dolby Atmos		up to 5.1.2
DTS:X		up to 5.1.2
DSD via HDMI	2-ch/Multi-ch Input	2-ch/Multi-ch Input
Auto Speaker Calibration System with Mic.	AccuEQ Advance with AccuReflex™	AccuEQ with AccuReflex™
HDR10
Dolby Vision
New HDCP Version	2.3	2.2 (3 inputs / 2 outputs)
Analog To HDMI Upconversion	Component**, Composite	Component**, Composite
Wi-Fi
Bluetooth	SBC, AAC	SBC, AAC
Chromecast Built-In
Many HDMI Inputs	7 (1 front)	8 (1 front)
USB Input	1 (Rear)	1 (Rear)
Many RCA Line Inputs	7 (1 Front)	7 (1 Front)
Phono Input
Composite Video Inputs	2	2
Component Video Inputs	1	2
Ethernet
Analog Tuner	FM/AM	FM/AM
Pandora
Spotify
Tidal

WEAKNESSES	Onkyo TX-NR797	Onkyo TX-NR757
No Front Wide Channel Support
No Auro 3D with Auro-Matic Upmixer
No HDR10+
No eARC
No 8K Passthrough	up to 4K/60p (RGB/YCbCr4:4:4)	up to 4K/60p (RGB/YCbCr4:4:4)
Does not Work with Amazon Alexa
Few 8K Inputs
No RCA Pre-Outs	0.2	0.2
No Digital Radio

Onkyo TX-NR797	Onkyo TX-NR757
9 channel Linear Class A/B Amplifier: Onkyo TX-NR797 features 9 channel power amplifier with Linear Class A/B design. It is rated at 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.	7 channel Amplifier: Onkyo TX-NR757 features 7 channel power amplifier. It is rated at 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

• Dynamic Audio Amplification: Onkyo TX-NR797 and Onkyo TX-NR757 feature 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 (Wide Range Amp Technology): Onkyo TX-NR797 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-NR797 is THX™ Select™ (previously known as Select2) certified. This means that it is for medium sized rooms, up to 2,000 cubic feet in size, with a 10-12 foot viewing distance from the screen.

Onkyo TX-NR757 is THX™ Select™2 Plus certified. This means that it is ideally suited for a room where the screen-to-seat viewing distance is approximately 3 to 4 meters, and the room size is approximately 56 cubic meters.

AMPLIFIER	Onkyo TX-NR797	Onkyo TX-NR757
Channels	9.2	7.2
Power Output	100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)	110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
Front Wide Channel Support
Dynamic Audio Amplification
Non-Phase Shift Amplifier
VLSC (Vector Linear Shaping Circuitry)	Front L/R channels	Front L/R channels
Optimum Gain Volume Circuitry
THX™ Certification	Select™ (previously known as Select2)	Select™2 Plus
Continuous 6 Ω Rated
Certified 4 Ω Performance
Discrete Output Stage Circuitry
Independent Block Construction (Amp/Preprocessor)
Bi-amp Capability
BTL (Bridged Transless or Bridging)

Onkyo TX-NR797's and Onkyo TX-NR757's amplifiers can be assigned for different speaker configurations.

• Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
Onkyo TX-NR797: 5.2.2, 5.2.4, 7.2.2 with internal amplifier.
Onkyo TX-NR757: 5.2.2 with internal amplifier.
• DTS:X Configurations: The following speaker configurations are supported for DTS:X:
Onkyo TX-NR797: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2, 5.2.4, 7.2.2 with internal amplifier.
Onkyo TX-NR757: The speaker configurations for DTS:X are the same as 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:
Onkyo TX-NR797: 5.2, 7.2 with internal amplifier.
Onkyo TX-NR757: 5.2, 7.2 with internal amplifier.
• 2-ch Bi-Amp: Both models are able to bi-amp up to 2 main channels simultaneously. During bi-amplification two amplifiers are used for one speaker. One amplifier powers the midrange and tweeter section of the speaker and another amplifier powers the low frequency woofers. Each amplifier is less loaded and performs better. In order to use this feature speakers must have 2 pairs of connectors.

Dolby Atmos

Onkyo TX-NR797 and Onkyo TX-NR757 support Dolby Atmos.

• Dolby Surround Upmixer: Both models support 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.
• Dolby Atmos Height Virtualization: Onkyo TX-NR797 supports Dolby Atmos Height Virtualization which is a digital signal processing solution that leverages Dolby's deep understanding of human audio perception to create the sensation of overhead sound from the listener-level speakers.

DTS:X

Onkyo TX-NR797 and Onkyo TX-NR757 support DTS:X.

• DTS Neural:X: Both models feature DTS Neural:X which is an advanced 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.
• DTS Virtual:X: Onkyo TX-NR797 supports DTS Virtual:X which bridges the gap between DTS:X codec and the reality of so many consumers' homes, allowing you to enjoy multi-dimensional sound regardless of room size, layout, or speaker configuration. If you have a limited speaker setup you will miss a full immersive potential of your entertainment system. DTS Virtual:X adds height and surround audio effect to your system without adding height speakers. It works with multiple configurations and delivers immersive sound experience out of 5.1 or even 2.1 speaker layouts.
• DTS Dialog Control: Both models have DTS Dialog Control. This function adjusts the dialog levels during playback of the DTS:X stream. It allows you to separately increase the dialog levels in contrast with the background sound and hear dialog easily even under noisy circumstances.

IMAX Enhanced

Onkyo TX-NR797 is IMAX Enhanced certified. To qualify for IMAX Enhanced certification, 4K HDR televisions, projectors, sound bars, a/v receivers, loudspeakers, powered subwoofers and other premium home entertainment devices must meet carefully prescribed performance requirements established by IMAX, DTS and Hollywood's leading experts.

• What makes an IMAX Enhanced A/V receiver different from an A/V receiver with DTS:X technology? DTS:X technology is commonly found in most multi-channel A/V receivers on the market today. All IMAX Enhanced A/V receivers include DTS:X technology and deliver additional features, such as auto-sensing of IMAX Enhanced content, via IMAX Mode. IMAX Mode indicates that your A/V receiver supports fully immersive IMAX signature sound.

AUDIO DECODING	Onkyo TX-NR797	Onkyo TX-NR757
Dolby Atmos		up to 5.1.2
Dolby Atmos Height Virtualization
Dolby Atmos Music
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Pro Logic
Dolby Digital EX
THX Listening Modes
DTS:X		up to 5.1.2
DTS Neural:X		after firmware update
DTS Virtual:X	via future firmware update
DTS Neo		Neo:6 until firmware update
DTS-HD Master Audio
DTS-HD High Resolution Audio
DTS 96/24
DTS Express
DTS-ES
IMAX Enhanced	via future firmware update
Auro 3D with Auro-Matic Upmixer

Onkyo TX-NR797 comes with 7 HDMI inputs. It has 2 outputs - 1 Main and 1 Sub/Zone2.

Onkyo TX-NR757 comes with 8 HDMI inputs. It has 2 outputs which work parallelly and output the same signal.

• 4K/60Hz Passthrough: On both receivers all inputs pass up to 4K/60p (RGB/YCbCr4:4:4) video signal.
• 4K Upscaling: Both receivers can upscale 1080p to 4K from HDMI and analog sources.
• Analog To HDMI Upconversion: Both receivers support analog to HDMI Upconversion, so you can input your analog video sources and output them digitally via HDMI. This means that you will need only one HDMI cable to connect to your TV.
• BT.2020 Color Space: BT.2020 or Rec. 2020 is a color standard which delivers a wider color gamut compared to Rec. 709. It covers approximately 75% of the total visual spectrum while the Rec. 709 covers only 35% (available on both models).
• HDCP Copy Protection: Onkyo TX-NR797 is HDCP 2.3 and Onkyo TX-NR757 is HDCP 2.2 compliant which is a requirement for 4K/HDR copy-protected content transmission.
• 3D Ready: Both receivers are able to pass 3D video through HDMI.

HDR (High Dynamic Range)

Onkyo TX-NR797 supports HDR10, Dolby Vision and Hybrid Log-Gamma.

Onkyo TX-NR757 supports HDR10 and Dolby Vision. 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.

VIDEO FEATURES	Onkyo TX-NR797	Onkyo TX-NR757
HDR10
HDR10+
Dynamic HDR
BT.2020 color space
Dolby Vision
HLG (Hybrid Log Gamma)
HDBaseT Compatible
Enhanced Audio Return Channel (eARC)
HDCP Version	2.3	2.2 (3 inputs / 2 outputs)
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)	up to 4K/60p (RGB/YCbCr4:4:4)
Video Signal Upscaling	1080p to 4K	1080p to 4K

TERMINALS	Onkyo TX-NR797	Onkyo TX-NR757
HDMI Inputs	7 (1 front)	8 (1 front)
HDMI Outputs	2 (1 Main, 1 Sub/Zone2)	2 (simultaneous)
8K Inputs
USB Input	1 (Rear)	1 (Rear)
USB DC Out Port
Optical Inputs	1	2
Optical Outputs
Coaxial Inputs	1	1
RCA Line Inputs	7 (1 Front)	7 (1 Front)
RCA Line Outputs
XLR Line Inputs
Phono Input
Multi-Channel Input
RCA Pre-Outs	0.2	0.2
XLR Pre-outs
Composite Video Inputs	2	2
Composite Video Outputs
S-Video Inputs
S-Video Outputs
Component Video Inputs	1	2
Component Video Outputs

GENERAL	Onkyo TX-NR797	Onkyo TX-NR757
Brand	Onkyo	Onkyo
Model	TX-NR797	TX-NR757
Type	A/V Receiver	A/V Receiver
Country	North America	North America
Release Year	2019	2016
Predecessor	Onkyo TX-NR787	Onkyo TX-NR747
Successor	Onkyo TX-NR7100	Onkyo TX-NR777

AMPLIFIER	Onkyo TX-NR797	Onkyo TX-NR757
Channels	9.2	7.2
Power Output	100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)	110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
Front Wide Channel Support
Amplifier Design	Linear Class A/B
Dynamic Audio Amplification
Non-Phase Shift Amplifier
VLSC (Vector Linear Shaping Circuitry)	Front L/R channels	Front L/R channels
Optimum Gain Volume Circuitry
THX™ Certification	Select™ (previously known as Select2)	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 FEATURES	Onkyo TX-NR797	Onkyo TX-NR757
Digital Signal Processing (DSP) Engine	32-bit Digital Signal Processing Engines	32-bit Digital Signal Processing Enginess
DAC	AKM AK4458	AKM AK4458 (8 Channels x 1)
DAC Specs	384 kHz/32 Bit	384 kHz/32 Bit
Maximum Channel Processing	9.1	7.1
Air Studios Monitor Certification
Dolby Atmos		up to 5.1.2
Dolby Atmos Height Virtualization
Dolby Atmos Music
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Pro Logic
Dolby Digital EX
THX Listening Modes
Surround EX		also known as Dolby Digital Surround EX
DTS:X		up to 5.1.2
DTS Neural:X		after firmware update
DTS Virtual:X	via future firmware update
DTS Neo		Neo:6 until firmware update
DTS-HD Master Audio
DTS-HD High Resolution Audio
DTS 96/24
DTS Express
DTS-ES
IMAX Enhanced	via future firmware update
Auro 3D with Auro-Matic Upmixer
PCM	2-ch/Multi-ch Input	2-ch/Multi-ch Input
Network Audio Formats	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, MPEG-4 AAC, LPCM	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, MPEG-4 AAC, LPCM
Music Playback via USB	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD
High Resolution Music Playback via USB and/or Network	up to 192 kHz	up to 192 kHz
High Resolution Audio Formats via USB	FLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD	FLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD
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	All 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
Direct Mode
Pure Audio Mode
Pure Direct Analog Path Mode
Virtual Speakers	T-D (Theater-Dimensional)	T-D (Theater-Dimensional)

CALIBRATION	Onkyo TX-NR797	Onkyo TX-NR757
Auto Speaker Calibration System with Mic.	AccuEQ Advance with AccuReflex™	AccuEQ with AccuReflex™

VIDEO FEATURES	Onkyo TX-NR797	Onkyo TX-NR757
HDR10
HDR10+
Dynamic HDR
BT.2020 color space
Dolby Vision
HLG (Hybrid Log Gamma)
HDBaseT Compatible
Enhanced Audio Return Channel (eARC)
HDCP Version	2.3	2.2 (3 inputs / 2 outputs)
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)	up to 4K/60p (RGB/YCbCr4:4:4)
Video Signal Upscaling	1080p to 4K	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-NR797	Onkyo TX-NR757
Wi-Fi
Bluetooth	SBC, AAC	SBC, AAC
Works with Amazon Alexa
Chromecast Built-In
Works with SonoS
DTS Play-Fi	via Onkyo Music Control app
MHL Input
AirPlay	AirPlay 2 after firmware update	AirPlay
Apple Product Connection	iPod, iPhone and iPad	iPod, iPhone and iPad
Remote App	Onkyo Controller and Music Control apps	Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices
InstaPrevue Input Source Prevue

TERMINALS	Onkyo TX-NR797	Onkyo TX-NR757
HDMI Inputs	7 (1 front)	8 (1 front)
HDMI Outputs	2 (1 Main, 1 Sub/Zone2)	2 (simultaneous)
8K Inputs
USB Input	1 (Rear)	1 (Rear)
USB DC Out Port
Optical Inputs	1	2
Optical Outputs
Coaxial Inputs	1	1
RCA Line Inputs	7 (1 Front)	7 (1 Front)
RCA Line Outputs
XLR Line Inputs
Phono Input
Multi-Channel Input
RCA Pre-Outs	0.2	0.2
XLR Pre-outs
Composite Video Inputs	2	2
Composite Video Outputs
S-Video Inputs
S-Video Outputs
Component Video Inputs	1	2
Component Video Outputs
Ethernet
Ethernet Switch
PC In
Front A/V Inputs	HDMI, Mini-Jack	HDMI, Mini-Jack
Speaker A/B
Headphone Out	6.3 mm (1/4")	6.3 mm (1/4")
Detachable Power Cord
uport

ZONES	Onkyo TX-NR797	Onkyo TX-NR757
Number of Zones	3	2
Powered Zones	2 and 3	2 (and Zone 2 A/B)
Zone 2 Outs	HDMI, RCA Line Out (shared with Zone B)	RCA Line Out
Zone 3 Outs
Whole House Mode
RS-232C Interface
+12V Trigger Output	1 (MAIN, 100 mA)	1 (MAIN, 100 mA)
Remote (IR) Input/Output	1 / 0	1 / 0

MISCELLANEOUS	Onkyo TX-NR797	Onkyo TX-NR757
On-Screen Display	Graphical User Interface with Overlaid On-Screen Display (OSD) via HDMI	Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up
GUI Languages	7	7
ONKYO-RI System Control
RIHD (Remote Interactive Over HDMI)
Pre-Pro/Learning Remote		/
Smart Grid-Ready

RADIO	Onkyo TX-NR797	Onkyo TX-NR757
Analog Tuner	FM/AM	FM/AM
Presets	40	40
Digital Radio
Internet Radio	TuneIn	TuneIn
Pandora
Spotify
Tidal
Deezer
Napster
SiriusXM

CONSTRUCTION	Onkyo TX-NR797	Onkyo TX-NR757
Solid Aluminum Front
Speaker Terminals	9	9
Large Speaker Terminals	9	9
Color-Coded Speaker Terminals
Transparent High-Grade Speaker Terminals
Gold plated RCA terminals

POWER	Onkyo TX-NR797	Onkyo TX-NR757
Power Supply	AC 120 V, 60 Hz	AC 120 V, 60 Hz
Independent Power Supply
H.C.P.S. (High Current Power Supply)	Customized Transformer	Massive High Power Transformer
Toroidal Transformer
Power Consumption	750 W	600 W
No Sound Power	75 W	80 W
Standby Power	0.15 W	0.1 W
ECO Mode / Hybrid Standby Function

PHYSICAL	Onkyo TX-NR797	Onkyo TX-NR757
Dimensions (W x H x D)	435 mm x 173.5 mm x 379.5 mm 17-1/8" x 6-13/16" x 14-15/16"	435 mm x 173.5 mm x 378 mm 17-1/8" x 6-13/16" x 14-7/8"
Dimensions of Package (W x H x D)	534 mm x 265 mm x 468 mm 21" x 10-7/16" x 18-7/16"
Weight	10.8 kg (23.8 lbs)	10.5 kg (23.1 lbs)
Weight of Package	13.5 kg (29.8 lbs)

SPECIFICATIONS	Onkyo TX-NR797	Onkyo TX-NR757
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)	100 W (0.08% THD)	110 W (0.08% THD)
Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)		180 W (0.9% THD)
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)	220 W (10% 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 (1 kHz, 100 W/8 Ω)
Input Sensitivity and Impedance (Phono MM)	3.5 mV/47 kΩ	3.5 mV/47 kΩ
Rated Headphone Jack Output Level and Impedance		330 Ω
Rated Headphone Power Output	85 mW (32 Ω, 1 kHz, 10% THD)	85 mW (32 Ω, 1 kHz, 10% THD)
Phono Overload	70 mV (MM, 1 kHz 0.5%)	70 mV (MM, 1 kHz 0.5%)
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)
DSD Sampling Rates via HDMI	2.8 MHz	2.8 MHz
DSD Sampling Rates via USB	2.8 MHz, 5.6 MHz, 11.2 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 a/b/g/n
Wi-Fi Terminal Frequency	5 GHz, 2.4 GHz	5 GHz, 2.4 GHz
Bluetooth Version	4․2	4․1 + LE
Bluetooth Frequency	2.4 GHz	2.4 GHz
USB Terminal	Ver. 2.0, 5 V, 1 A	5 V, 1 A
FM Frequency	87.5 MHz - 107.9 MHz	87.5 MHz - 107.9 MHz
FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)	Mono: 1.0 µV (11.2 dBf)
AM Frequency	530 kHz - 1710 kHz	530 kHz - 1710 kHz
Warranty	2 Years	2 Years

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