Denon AVR-S640H vs Yamaha RX-A750: Comprehensive Comparison

1. Overview

Here we are comparing Denon AVR-S640H to Yamaha RX-A750 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 Denon AVR-S640H has 5 channel and the Yamaha RX-A750 has 7 channel amplifiers with Denon AVR-S640H's being less powerful.

Denon AVR-S640H	Yamaha RX-A750
Denon AVR-S640H was introduced in 2018. It is equipped with 5 channel amplifier with 75 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 5.1 maximum channel processing. It , passes 4K/60Hz video signal.	Yamaha RX-A750 was introduced in 2015. It is equipped with 7 channel amplifier with 90 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 7.1 maximum channel processing. It , passes 4K/60Hz and upscales up to 4K 60p 4:4:4 video signal.

We evaluated Denon AVR-S640H and Yamaha RX-A750 and gave them scores of 80 and 82 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.

Denon AVR-S640H

Yamaha RX-A750

Amplifier

84

Amplifier

88

Audio Features

66

Audio Features

71

Video Features

94

Video Features

83

Connectivity

82

Connectivity

82

Zones

55

Zones

81

Radio

96

Radio

87

OVERALL

80

OVERALL

82

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

2. Pros and Cons

In this section we present pros and cons of Denon AVR-S640H and Yamaha RX-A750.

PROS

Denon AVR-S640H

Yamaha RX-A750

Auto Speaker Calibration System with Mic.
HDR10
Dolby Vision
New HDCP Version
Auto Low Latency Mode Pass-through
Wi-Fi
Bluetooth
Works with Amazon Alexa
HEOS
USB Input
Phono Input
Composite Video Inputs
Ethernet
Analog Tuner
Pandora
Spotify
Tidal

DSD via HDMI
Auto Speaker Calibration System with Mic.
HDR10
New HDCP Version
Analog To HDMI Upconversion
Wi-Fi
Bluetooth
Works with Amazon Alexa
USB Input
Composite Video Inputs
Component Video Inputs
Ethernet
Analog Tuner
Spotify

CONS

Denon AVR-S640H

Yamaha RX-A750

Few Channels - 5.2
Low Power Output - 75 W
5.1 Channel Processing
No Dolby Atmos
No Dolby Atmos Height Virtualization
No DTS:X
No IMAX Enhanced
No Auro 3D with Auro-Matic Upmixer
No DSD via HDMI
No HDR10+
No eARC
No 8K Passthrough
1 HDMI Outputs
0 8K Input
Few RCA Line Inputs
No RCA Pre-Outs
No Zones
No Digital Radio
Bluetooth 3․0 + EDR

No Front Wide Channel Support
No Dolby Atmos
No Dolby Atmos Height Virtualization
No DTS:X
No IMAX Enhanced
No Auro 3D with Auro-Matic Upmixer
No HDR10+
No Dolby Vision
No eARC
No 8K Passthrough
1 HDMI Outputs
0 8K Input
No Phono Input
No RCA Pre-Outs
No Digital Radio
No Pandora
No Tidal
Bluetooth 2․1 + EDR

And here are some specifications which fall into average criteria and are neither in PROs nor in CONs category:

AVERAGE

Denon AVR-S640H

Yamaha RX-A750

5 HDMI Inputs

7.2 Channels
Power Output - 90 W
7.1 Channel Processing
6 HDMI Inputs
RCA Line Inputs
2 Zones

3. Advantage of Denon AVR-S640H

This section shows those features and specifications which are the reason to choose Denon AVR-S640H over Yamaha RX-A750.

Check the Price

Denon AVR-S640H

	Denon AVR-S640H	vs	Yamaha RX-A750
Audyssey Dynamic EQ		vs
Audyssey Dynamic Volume		vs
BT.2020 color space		vs
Dolby Vision		vs
HLG		vs
Auto Low Latency Mode Pass-through		vs
AirPlay	AirPlay 2	vs	AirPlay
Phono Input		vs
Pandora		vs
Tidal		vs
Deezer		vs
Napster		vs
Color-Coded Speaker Terminals		vs
Bigger Power Supply	340 W	vs	300 W
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	3․0 + EDR	vs	2․1 + EDR
Higher FM S/N Ratio	Mono/Stereo: 70 dB/67 dB	vs	Mono/Stereo: 65 dB/64 dB
Wider AM Frequency Range	520 kHz - 1710 kHz	vs	531 MHz - 1611 MHz

4. Advantage of Yamaha RX-A750

This section shows those features and specifications which are the reason to choose Yamaha RX-A750 over Denon AVR-S640H.

Check the Price

Yamaha RX-A750

	Denon AVR-S640H	vs	Yamaha RX-A750
More Channels	5.2	vs	7.2
Higher Power Output	75 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)	vs	90 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
Bi-amp capability		vs
More Channel Processing	5.1	vs	7.1
Dolby Pro Logic	PLII	vs	PLIIx
Dolby Digital EX		vs
DTS-ES		vs	Discrete 6.1, Matrix 6.1
Network Audio Formats	MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, DSD	vs	MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
Music Playback via USB	MP3, WMA, AAC, Apple Lossless, WAV, FLAC, DSD	vs	MP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
High Resolution Audio Formats via USB	Apple Lossless, WAV, FLAC, DSD	vs	Apple Lossless, WAV, FLAC, AIFF, DSD
DSD via HDMI		vs	2-ch/Multi-ch Input
Dialog Level Adjustment		vs
Dialogue Lift		vs	no presence speakers required
Video Signal Upscaling		vs	up to 4K 60p 4:4:4
Analog To HDMI Upconversion		vs	Component, Composite**
More HDMI Inputs	5	vs	6 (1 front)
More Coaxial Inputs/Outputs	1	vs	2
More RCA Line Inputs	2	vs	4
More Composite Video Inputs	2	vs	4
More Component Video Inputs		vs	2
More Component Video Outputs		vs	1
Front A/V Inputs	USB	vs	HDMI, USB
Detachable Power Cord		vs
More Zones	1	vs	2
RS-232C Interface		vs
+12V Trigger Output		vs	1
Remote (IR) Input/Output	0 / 0	vs	1 / 1
Analog Tuner	FM/AM	vs	FM/AM with RDS
More Speaker Terminals	5	vs	9
More Large Speaker Terminals	5	vs	9
Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)	75 W (0.08% THD)	vs	90 W (0.06% THD)
Higher S/N Ratio (Line, IHF-A)	98 dB	vs	110 dB
Lower FM Harmonic Distortion (IHF, 1 kHz)	Mono/Stereo: 0.7%/1.0%	vs	Mono/Stereo: 0.5%/0.6%

5. Common Strengths and Weaknesses

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	Denon AVR-S640H	Yamaha RX-A750
Auto Speaker Calibration System with Mic.	Audyssey MultEQ	YPAO sound optimization (R.S.C.)
HDR10
New HDCP Version	2.2	2.2
Wi-Fi		with Wireless Direct
Bluetooth	SBC
Works with Amazon Alexa		on MusicCast (Voice control using your Alexa device like Echo, Dot, Tap and Show)
USB Input	1 Front for USB memory	iPod^® / iPhone^®, USB memory, portable audio player
Composite Video Inputs	2	4
Ethernet
Analog Tuner	FM/AM	FM/AM with RDS
Spotify

WEAKNESSES	Denon AVR-S640H	Yamaha RX-A750
No Dolby Atmos
No Dolby Atmos Height Virtualization
No DTS:X
No IMAX Enhanced
No Auro 3D with Auro-Matic Upmixer
No HDR10+
No eARC
No 8K Passthrough	up to 4K 50/60Hz 4:4:4	up to 4K/60p 4:4:4
Few HDMI Outputs	1	1
Few 8K Inputs
No RCA Pre-Outs	0.2	0.2
No Digital Radio
Old Bluetooth Version	3․0 + EDR	2․1 + EDR

6. Amplifier

Denon AVR-S640H	Yamaha RX-A750
5 channel Amplifier: Denon AVR-S640H features 5 channel power amplifier. It is rated at 75 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.	7 channel Amplifier: Yamaha RX-A750 features 7 channel power amplifier. It is rated at 90 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

AMPLIFIER	Denon AVR-S640H	Yamaha RX-A750
Channels	5.2	7.2
Power Output	75 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)	90 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
THX™ Certification
Continuous 6 Ω Rated
Certified 4 Ω Performance
Bi-amp Capability

7. Speaker Configurations

Denon AVR-S640H's and Yamaha RX-A750's amplifiers can be assigned for different speaker configurations.

Configurations: Available configurations are:

Denon AVR-S640H: 5.2 with internal amplifier.

Yamaha RX-A750: 5.2, 7.2 with internal amplifier.

Bi-Amp: Yamaha RX-A750 is 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.

8. HDMI

Denon AVR-S640H comes with 5 HDMI inputs. It has 1 output.

Yamaha RX-A750 comes with 6 HDMI inputs. It has 1 output.

4K/60Hz Passthrough: On both receivers all inputs pass up to 4K 50/60Hz 4:4:4 video signal.
4K Upscaling on Yamaha RX-A750: It can upscale up to 4K 60p 4:4:4 from HDMI and analog sources.
Analog To HDMI Upconversion: Yamaha RX-A750 supports 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 Denon AVR-S640H only).
HDCP 2.2 Copy Protection: Both receivers are 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)

Denon AVR-S640H supports HDR10, Dolby Vision and Hybrid Log-Gamma.

Yamaha RX-A750 supports 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.

Gaming Features

Denon AVR-S640H supports Auto Low Latency Mode (ALLM) for lag-free and smooth gaming.

VIDEO FEATURES	Denon AVR-S640H	Yamaha RX-A750
HDR10
HDR10+
Dynamic HDR
BT.2020 color space
Dolby Vision
HLG (Hybrid Log Gamma)
HDBaseT Compatible
Enhanced Audio Return Channel (eARC)
HDCP Version	2.2	2.2
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 50/60Hz 4:4:4	up to 4K/60p 4:4:4
Video Signal Upscaling		up to 4K 60p 4:4:4

9. Inputs and Outputs

Audio

Phono Input: There is an MM phono input on Denon AVR-S640H with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
Analog Line Inputs: There are 2 pair of line inputs on Denon AVR-S640H and 4 pair of line inputs on Yamaha RX-A750 for connecting sources with analog outputs.
Digital Inputs: 2 optical inputs and 1 coaxial input are available on Denon AVR-S640H and 2 optical inputs and 2 coaxial inputs are available on Yamaha RX-A750 for digital audio connections.
Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel of each receiver.

Video

HDMI:

Denon AVR-S640H
Inputs: 5 Outputs: 1
8K Inputs: 0.

Yamaha RX-A750
Inputs: 6 (1 front) Outputs: 1
8K Inputs: 0.

Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.

Denon AVR-S640H
Inputs: 2 Outputs: 1.

Yamaha RX-A750
Inputs: 4 Outputs: 1.

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. resolution on Component video connectors.
Yamaha RX-A750 supports up to 1080i resolution on Component video connectors.

Denon AVR-S640H
Inputs: 0 Outputs: 0.

Yamaha RX-A750
Inputs: 2 Outputs: 1.

Front A/V Inputs

Denon AVR-S640H: USB
Yamaha RX-A750: HDMI, USB

Denon AVR-S640H

Yamaha RX-A750

TERMINALS	Denon AVR-S640H	Yamaha RX-A750
HDMI Inputs	5	6 (1 front)
HDMI Outputs	1	1
8K Inputs
USB Input	1 Front for USB memory	iPod^® / iPhone^®, USB memory, portable audio player
USB DC Out Port
Optical Inputs	2	2
Optical Outputs
Coaxial Inputs	1	2
RCA Line Inputs	2	4
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	4
Composite Video Outputs	1	1
S-Video Inputs
S-Video Outputs
Component Video Inputs		2
Component Video Outputs		1

10. Evaluations

We evaluated Denon AVR-S640H and Yamaha RX-A750 and gave them scores of 80 and 82 out of 100 recpectively. We also gave separate scores for 7 different categories according to the available features and specifications some of which are listed below. These evaluations are relative and may change each time a new receiver is added to the database.

Denon AVR-S640H

Yamaha RX-A750

OVERALL

80

OVERALL

82

Amplifier

GOOD

84

Few Channels - 5.2
Low Power Output - 75 W

EXCELLENT

88

7.2 Channels
Power Output - 90 W

Audio Features

AVERAGE

66

Few Channels - 5.2
5.1 Channel Processing
No Dolby Atmos
No Dolby Atmos Height Virtualization
No DTS:X
No IMAX Enhanced
No Auro 3D with Auro-Matic Upmixer
No DSD via HDMI

GOOD

71

7.2 Channels
No Front Wide Channel Support
7.1 Channel Processing
No Dolby Atmos
No Dolby Atmos Height Virtualization
No DTS:X
No IMAX Enhanced
No Auro 3D with Auro-Matic Upmixer
DSD via HDMI

Video Features

EXCELLENT

94

HDR10
No HDR10+
Dolby Vision
Auto Low Latency Mode Pass-through
No 8K Passthrough

GOOD

83

HDR10
No HDR10+
No Dolby Vision
No 8K Passthrough
Analog To HDMI Upconversion

Connectivity

GOOD

82

No eARC
New HDCP Version
Wi-Fi
Bluetooth
Works with Amazon Alexa
HEOS
5 HDMI Inputs
1 HDMI Outputs
0 8K Input
USB Input
Few RCA Line Inputs
Phono Input
No RCA Pre-Outs
Composite Video Inputs
Ethernet
Bluetooth 3․0 + EDR

GOOD

82

No eARC
New HDCP Version
Wi-Fi
Bluetooth
Works with Amazon Alexa
6 HDMI Inputs
1 HDMI Outputs
0 8K Input
USB Input
RCA Line Inputs
No Phono Input
No RCA Pre-Outs
Composite Video Inputs
Component Video Inputs
Ethernet
Bluetooth 2․1 + EDR

Zones

AVERAGE

55

No Zones

GOOD

81

2 Zones

Radio

EXCELLENT

96

Analog Tuner
Pandora
Spotify
Tidal

EXCELLENT

87

Analog Tuner
No Pandora
Spotify
No Tidal

11. Specifications

GENERAL	Denon AVR-S640H	Yamaha RX-A750
Brand	Denon	Yamaha
Series		Aventage
Model	AVR-S640H	RX-A750
Type	A/V Receiver	A/V Receiver
Country	USA	UK and Europe
Release Year	2018	2015
Predecessor		Yamaha RX-A740
Successor	Denon AVR-S650H	Yamaha RX-A760

AMPLIFIER	Denon AVR-S640H	Yamaha RX-A750
Channels	5.2	7.2
Power Output	75 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)	90 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
Front Wide Channel Support
Discrete Amplification
THX™ Certification
Continuous 6 Ω Rated
Certified 4 Ω Performance
Mono Block Power Amplifier Construction
Bi-amp Capability

AUDIO FEATURES	Denon AVR-S640H	Yamaha RX-A750
Surround:AI™
DAC		Burr-Brown
DAC Specs	192 kHz/24 Bit	192 kHz/24 Bit
Maximum Channel Processing	5.1	7.1
D.D.S.C. HD Digital
Alpha Processing
Air Studios Monitor Certification
Dolby Atmos
Dolby Atmos Height Virtualization
Dolby Atmos Music
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Pro Logic	PLII	PLIIx
Dolby Digital EX
Surround EX
DTS:X
DTS Neural:X
DTS Virtual:X
DTS Neo	Neo:6	Neo:6
DTS-HD Master Audio
DTS-HD High Resolution Audio
DTS 96/24
DTS Express
DTS-ES		Discrete 6.1, Matrix 6.1
IMAX Enhanced
Auro 3D with Auro-Matic Upmixer
PCM	2-ch/Multi-ch Input	2-ch/Multi-ch Input
Network Audio Formats	MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, DSD	MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
Music Playback via USB	MP3, WMA, AAC, Apple Lossless, WAV, FLAC, DSD	MP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
High Resolution Music Playback via USB and/or Network	up to 192 kHz	up to 192 kHz
High Resolution Audio Formats via USB	Apple Lossless, WAV, FLAC, DSD	Apple Lossless, WAV, FLAC, AIFF, DSD
Gapless Playback
DSD via HDMI		2-ch/Multi-ch Input
DSD via USB	2-ch Input	2-ch Input
DSD to PCM Converter
USB DAC
Jitter Reduction
DTS Dialogue Control
Dialog Enhancement
Dialog Level Adjustment
Dialog normalization
Dialogue Lift		no presence speakers required
Compressed Music Enhancer		including for Bluetooth^®
High-resolution Music Enhancer
Adaptive DRC (Dynamic Range Control)
Initial Volume & Maximum Volume Setting
Audyssey Dynamic EQ
Audyssey Dynamic Volume
Audyssey LFC
Audyssey Sub EQ HT
Audyssey DSX
Direct Mode
Straight Decoding Mode
Pure Direct Mode		with Video On mode
CINEMA DSP		3D
DSP Programs		17
SILENT CINEMA / Virtual CINEMA DSP		Virtual CINEMA FRONT
Virtual Speakers		including surround back
Independent Subwoofer Outputs

CALIBRATION	Denon AVR-S640H	Yamaha RX-A750
Auto Speaker Calibration System with Mic.	Audyssey MultEQ	YPAO sound optimization (R.S.C.)
YPAO Volume
PEQ for SUB		Down to 31 Hz
Optimized Bass Redirection
Bass Sync

VIDEO FEATURES	Denon AVR-S640H	Yamaha RX-A750
HDR10
HDR10+
Dynamic HDR
BT.2020 color space
Dolby Vision
HLG (Hybrid Log Gamma)
HDBaseT Compatible
Enhanced Audio Return Channel (eARC)
HDCP Version	2.2	2.2
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 50/60Hz 4:4:4	up to 4K/60p 4:4:4
Video Signal Upscaling		up to 4K 60p 4:4:4
Analog To HDMI Upconversion		Component**, Composite
Component Video Upscaling
Analog to Analog Video conversion
Component Video Maximum Resolution		1080i
Video Parameter Adjustments
isf Certified Calibration Control

CONNECTIVITY	Denon AVR-S640H	Yamaha RX-A750
Wi-Fi		with Wireless Direct
Bluetooth	SBC
Bluetooth Headphone Transmission
Works with Amazon Alexa		on MusicCast (Voice control using your Alexa device like Echo, Dot, Tap and Show)
Chromecast Built-In
Works with SonoS
HEOS
DTS Play-Fi
MHL Input
DLNA 1.5
MusicCast
AirPlay	AirPlay 2	AirPlay
Apple Product Connection	iPod, iPhone and iPad	iPod, iPhone and iPad
Remote App	Denon 2016 AVR Remote App for iOS and Android devices and Kindle Fire	(iPhone^® / iPad^® / Android™ phone / tablet)
InstaPrevue Input Source Prevue

TERMINALS	Denon AVR-S640H	Yamaha RX-A750
HDMI Inputs	5	6 (1 front)
HDMI Outputs	1	1
8K Inputs
USB Input	1 Front for USB memory	iPod^® / iPhone^®, USB memory, portable audio player
USB DC Out Port
Optical Inputs	2	2
Optical Outputs
Coaxial Inputs	1	2
RCA Line Inputs	2	4
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	4
Composite Video Outputs	1	1
S-Video Inputs
S-Video Outputs
Component Video Inputs		2
Component Video Outputs		1
Ethernet
Ethernet Switch
PC In
Front A/V Inputs	USB	HDMI, USB
Speaker A/B
Headphone Out	6.3 mm (1/4")	6.3 mm (1/4")
Detachable Power Cord
dockport

ZONES	Denon AVR-S640H	Yamaha RX-A750
Number of Zones	1	2
Powered Zones		Zone 2
Zone 2 Outs		Line output
Zone B Video Output
Zone GUI
RS-232C Interface
+12V Trigger Output		1
Remote (IR) Input/Output	0 / 0	1 / 1
Party Mode

MISCELLANEOUS	Denon AVR-S640H	Yamaha RX-A750
On-Screen Display	Hybrid Graphic User Interface	Graphical user interface
GUI Languages	3
SCENE		SCENE (4 sets)
Web Control
Control4 SDDP
PreAmp Mode
Display	1 line
Remote Controller	RC-1226
Pre-programmed / Learnable / LCD Display	/ /
Denon Link HD
Setup Assistant
Quick Select plus / Quick Select	/

RADIO	Denon AVR-S640H	Yamaha RX-A750
Analog Tuner	FM/AM	FM/AM with RDS
Presets		40
Digital Radio
Internet Radio	TuneIn	vTuner
Pandora
Spotify
Tidal
Deezer
Napster
SiriusXM

CONSTRUCTION	Denon AVR-S640H	Yamaha RX-A750
Front Panel	not Metal
A.R.T. Wedge
Speaker Terminals	5	9
Large Speaker Terminals	5	9
Color-Coded Speaker Terminals
Transparent High-Grade Speaker Terminals
High Grade Audio Components
Gold plated RCA terminals

POWER	Denon AVR-S640H	Yamaha RX-A750
Power Supply	AC 120 V, 60 Hz	AC 230 V, 50 Hz
Power Consumption	340 W	300 W
Standby Power	0.1 W	0.1 W
ECO Mode / Hybrid Standby Function
Auto Power Standby
Auto Power off

PHYSICAL	Denon AVR-S640H	Yamaha RX-A750
Dimensions (W x H x D)	434 mm x 151 mm x 339 mm (with antenna: 434 mm x 215 mm x 339 mm) 17 1/8" x 6" x 13 3/8" (with antenna: 17 1/8" x 8 1/2" x 13 3/8")	435 mm x 171 mm x 380 mm (with antenna: 435 mm x 234 mm x 380 mm) 17-1/8" x 6-3/4" x 15" (with antenna up: 17-1/8" x 9-1/4" x 15")
Weight	7.8 kg (17 lbs 3 oz)	10.5 kg (23.2 lbs)

SPECIFICATIONS	Denon AVR-S640H	Yamaha RX-A750
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)	75 W (0.08% THD)	90 W (0.06% THD)
Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC)		105 W (0.9% THD)
Rated Power Output (8 Ω, 1 kHz, 1 channel Driven)		125 W (0.9% THD)
Maximum Effective Output Power (8 Ω, 1 kHz, 1 channel Driven, JEITA)		150 W (10% THD)
Power Output (6 Ω, 1 kHz, 2 channel driven, FTC)	100 W (0.7% THD)
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)	150 W (10% THD)
Rated Power Output (4 Ω, 1 kHz, 1 channel Driven)		150 W (0.9% THD, Front)
Dynamic Power per Channel (2 Ω, Front)		235 W
Dynamic Power per Channel (4 Ω, Front)		190 W
Dynamic Power per Channel (6 Ω, Front)		165 W
Dynamic Power per Channel (8 Ω, Front)		125 W
THD		0.06% (AV 5 etc. to Front, Pure Direct, 20 Hz - 20 kHz, 50 W, 8 Ω)
Phono Distortion	0.03% (1 kHz, 3 V)
Damping Factor		100 (Front, 20 Hz - 20 kHz, 8 Ω)
Input Sensitivity and Impedance (Line)	200 mV/47 kΩ	200 mV/47 kΩ
Input Sensitivity and Impedance (Phono MM)	2.5 mV
Maximum Input Sensitivity (Line)		2.3 V
S/N Ratio (Line, IHF-A)	98 dB	110 dB
S/N Ratio (Phono MM, IHF-A)	74 dB
Phono RIAA Deviation	±1 dB (20-20 kHz)
Frequency Response (Analog In)	+1/-3 dB (10 Hz to 100 kHz, Direct mode)	+0/-3 dB (10 Hz to 100 kHz)
Residual noise (IHF-A Network)		150 µV (Speaker Out)
Channel Separation at 1 kHz/10 kHz (LINE)		75 dB/50 dB
DSD Sampling Rates via HDMI		2.8 MHz
DSD Sampling Rates via USB	5.6 MHz, 2.8 MHz	5.6 MHz, 2.8 MHz
Video Input Sensitivity/Output Level and Impedance	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)
Video Maximum Input		1.5 Vp-p
Video Frequency Response	5 Hz to 10 MHz, 0 dB/-3 dB (Composite)	5 Hz to 60 MHz, -3 dB (Component)
Video S/N Ratio		50 dB
Ethernet Standard	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	3․0 + EDR	2․1 + EDR
Bluetooth Frequency	2.4 GHz
USB Terminal	USB2.0 5V, 1 A	USB2.0 5 V, 1 A
FM Frequency	87.5 MHz - 107.9 MHz	87.50 MHz - 108.00 MHz
FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)	Mono: 2.8 µV (20.2 dBf)	Mono: 3 µV (20.8 dBf)
FM Effective Sensitivity	1.2 µV (12.8 dBf)
FM S/N Ratio	Mono/Stereo: 70 dB/67 dB	Mono/Stereo: 65 dB/64 dB
FM Harmonic Distortion (IHF, 1 kHz)	Mono/Stereo: 0.7%/1.0%	Mono/Stereo: 0.5%/0.6%
AM Frequency	520 kHz - 1710 kHz	531 MHz - 1611 MHz
AM Effective Sensitivity	18 µV
Warranty	3 Years	3 Years

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

Denon AVR-S640H vs Yamaha RX-A750

Denon AVR-S640H

Yamaha RX-A750

Highlights

Highlights

1. Overview

Denon AVR-S640H

Yamaha RX-A750

2. Pros and Cons

PROS

Denon AVR-S640H

Yamaha RX-A750

CONS

Denon AVR-S640H

Yamaha RX-A750

AVERAGE

Denon AVR-S640H

Yamaha RX-A750

3. Advantage of Denon AVR-S640H

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4. Advantage of Yamaha RX-A750

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5. Common Strengths and Weaknesses

6. Amplifier

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7. Speaker Configurations

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8. HDMI

HDR (High Dynamic Range)

Gaming Features

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9. Inputs and Outputs

Audio

Video

Front A/V Inputs

Denon AVR-S640H

Yamaha RX-A750

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10. Evaluations

Denon AVR-S640H

Yamaha RX-A750

Amplifier

Audio Features

Video Features

Connectivity

Zones

Radio

11. Specifications

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