Denon AVR-S640H vs Onkyo TX-8140 review

Votes 1 1
Rating 5 5

AV receivers comparison chart

Overall
Denon AVR-S640H
6.2
Onkyo TX-8140
6.5
6
8
6
inapplicable
5
inapplicable

Denon AVR-S640H vs Onkyo TX-8140 review

Denon AVR-S640H
vs
Onkyo TX-8140

An affordable AV receiver is always a good option to consider, so Denon AVR-S640H vs Onkyo TX-8140 comparison definitely makes sense.

Amplifier

A significant difference between the receivers in the number of channels, Denon AVR-S640H has 5.2 versus 2.0 for Onkyo TX-8140. Regarding power, then AVR-S640H has such a W/Ohm ratio - 75/8, 100/6 when TX-8140 has a power of 80/8, 110/6. The THD is the same and is 0.08%.

Audio features

Characteristics of digital to analog converter (DAC) are different, 192 KHz/32-bit for AVR-S640H and AK4458 384 KHz/32-bit for the TX-8140. None of the models support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.

Connectivity

Both models have the ability to connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Spotify can be used on each receiver. The AVR-S640H can work with the audio stream from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, and the TX-8140 can receive a content from SiriusXM.

Video features

Only the Denon AVR-S640H has support for High dynamic range (HDR). Only the AVR-S640H provides HDMI signal transmission in standby mode. Both competitors are not able to scale the HDMI signal. Dolby Vision technology found support only on the AVR-S640H. Only the AVR-S640H supports HDMI Audio Return Channel (ARC). Unfortunately, HDMI eARC is not available on monitored devices. Of the two receivers in our comparison, HDMI CEC is present in only the AVR-S640H. These compared receivers have a built-in phono stage for connecting a vinyl player. An ECO mode is only available for the AVR-S640H. Both AVR-S640H and TX-8140 can be configured using the Setup assistant.

Multichannel surround

None of the rivals equipped with Dolby Atmos multichannel audio decoder. The receivers do not support the surround sound technology DTS:X.

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General

Item

Denon AVR-S640H
Onkyo TX-8140

Model

AVR-S640H
TX-8140

Brand

Denon
Onkyo

Reviews

200
165

Amplifier

Channels

5.2
2.0

Stereo power (RMS), W/Ohm

75/8, 100/6
80/8, 110/6

Output impedance, Ohm

8, 6
8, 6

Frequency response

10Hz-100KHz
10Hz-100KHz

THD in stereo, %

0.08
0.08

Audio features

Digital to analog converter (DAC)

192 KHz/32-bit
AK4458 384 KHz/32-bit

Bi-amping

Pure direct (straight)

Auto speaker calibration

Audyssey MultEQ

Speaker A/B switching

Other audio features

Audyssey Dynamic Volume, Audyssey Dynamic EQ, Compressed Audio Restorer, Hi-Res audio
WRAT, Hi-Res audio

Connectivity

Wi-Fi

USB

1 (USB 2.0)
1 (USB 2.0)

Bluetooth

Ethernet (RJ45)

1
1

DLNA

MHL

Streaming services

Apple Music (AirPlay)

AirPlay, AirPlay 2

Amazon Music

Spotify

Other streaming services

Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud
SiriusXM

Extensive connection

HDMI input/output

5/1
0/0

HDMI ARC (Audio Return Channel)

HDMI eARC (Enhanced Audio Return Channel)

HDMI CEC

Digital content protection (HDCP)

HDCP 2.2

Subwoofer output (LFE)

2
1

Headphone output

1 x 6.3
1 x 6.3

Optical digital input

2
2

Coaxial digital input

1
2

Composite input

2
0

Component input/output

0/0
0/0

Phono (MM) input

Front panel connectors

USB, phones, setup mic
USB, phones

Multi channel preamp output

Video features

HDR (High Dynamic Range)

4K signal pass-through

4K/60Hz

8K signal pass-through

HDMI signal pass-through

3D signal pass-through

HDMI pass-through in standby mode

Video conversion

Analog to HDMI scaling

HDMI to HDMI scaling

Dolby Vision

Other video features

BT.2020, HLG
has not

Additional features

Voice control

Amazon Alexa, Google Assistant, Siri, Josh.AI

App control

iPhone, iPad, iPod, Android
iPhone, iPad, iPod, Android

Display

colour OSD
fluorescent

Tuner

AM, FM
AM, FM

Sleep timer

Auto power off

ECO mode

Graphical user interface (GUI)

Setup assistant

Firmware update

network, USB
network, USB

Other additional features

IP Control, Web Control
has not

Multi-room

Multi-room zones

has not
has not

Zone audio output

has not
has not

Zone HDMI output

has not
has not

Multi-room control

has not
has not

RS-232

0
0

Remote control input/output (IR)

0/0
1/1

DC trigger output (12V)

0
0

Multichannel surround

Dolby Atmos

Dolby TrueHD

Dolby Surround

Dolby (other)

Dolby Digital Plus, Dolby Pro Logic
has not

DTS:X

DTS HD Master

DTS Virtual:X

DTS Neural:X

DTS (other)

DTS 96/24, DTS-HD, DTS-EXPRESS, DTS-Surround, DTS Neo:6
has not

Auro-3D

IMAX Enhanced

Multichannel stereo

Audio file formats

MP3

WMA

AAC

WAV

FLAC

ALAC

Other audio file formats

has not
has not

Power

Operational power consumption, W

340

Standby consumption, W

0.1
0.15

Removable power cord

User manual

Manual

Dimensions

Size W x H x D, cm/inches

43.5 x 15.9 x 33/17 x 6.1 x 13
43.5 x 14.9 x 32.8/17 x 5.5 x 12.6

Weight, kg/lbs

7.7/17.2
8.2/18.1

Other

Release year

2018
2016
Denon AVR-S640H
Onkyo TX-8140
Denon AVR-S640H
Onkyo TX-8140

AV receivers SoundInspiration comparison rating

  • better
  • worse
  • 6.2
  • 6.5
  • 6.2Denon AVR-S640H
  • 6.5Onkyo TX-8140