Denon AVR-S660H vs Onkyo TX-SR494 review

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Denon AVR-S660H vs Onkyo TX-SR494 review

Denon AVR-S660H
vs
Onkyo TX-SR494

Denon AVR-S660H vs Onkyo TX-SR494 – that is a question.

Amplifier

The number of channels for receivers is different - 5.2 versus 7.2, respectively, for devices. In terms of power, there are differences, the AVR-S660H has such a ratio W/Ohm - 75/8, 100/6, while the TX-SR494 has a power of 135/6. A common feature for devices is the same total harmonic distortion - 0.08%.

Audio features

The manufacturer installed different DACs, the AVR-S660H received the model 192 KHz/32-bit, but the TX-SR494 is equipped with AKM 384 KHz/32-bit. The Bi-amping function is implemented only in the Onkyo TX-SR494. The model TX-SR494 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. The AVR-S660H has access to the Spotify service.

Video features

Signaling over HDMI in standby mode can provide the AVR-S660H and the TX-SR494. Video scaling is only possible with the AVR-S660H. Operation with the Dolby Vision is only possible with the AVR-S660H.

Extensive connections

The number of HDMI inputs/outputs varies depending on the receiver, the AVR-S660H has 6/1, and the TX-SR494 has 4/1.Denon AVR-S660H connectionsOnkyo TX-SR494 connections HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the AVR-S660H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. The AVR-S660H has support for the standard HDCP 2.3, compared to the TX-SR494, which supports the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Denon AVR-S660H. There is an ECO mode in AVR-S660H. The Denon AVR-S660H and the Onkyo TX-SR494 can be properly configured using the setup assistant.

Multichannel surround

A Dolby Atmos multichannel audio format is available only in the TX-SR494. Only in the TX-SR494 realized a DTS:X surround technology.

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General

Item

Denon AVR-S660H
Onkyo TX-SR494

Model

AVR-S660H
TX-SR494

Brand

Denon
Onkyo

Reviews

0
148

Amplifier

Channels

5.2
7.2

Stereo power (RMS), W/Ohm

75/8, 100/6
135/6

Output impedance, Ohm

8, 6
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
AKM 384 KHz/32-bit

Bi-amping

Pure direct (straight)

Auto speaker calibration

Audyssey MultEQ
AccuEQ

Speaker A/B switching

Other audio features

Audyssey Dynamic Volume, Audyssey Dynamic EQ, Hi-Res audio
Advanced Music Optimizer, Hi-Res audio

Connectivity

Wi-Fi

2.4/5GHz

USB

1 (USB 2.0)
1 (USB 2.0)

Bluetooth

Ethernet (RJ45)

1

DLNA

MHL

Streaming services

Apple Music (AirPlay)

AirPlay, AirPlay 2

Amazon Music

Spotify

Other streaming services

Deezer, TIDAL, Pandora, SiriusXM, Napster, SoundCloud
has not

Extensive connection

HDMI input/output

6/1
4/1

HDMI ARC (Audio Return Channel)

HDMI eARC (Enhanced Audio Return Channel)

HDMI CEC

Digital content protection (HDCP)

HDCP 2.3
HDCP 2.2

Subwoofer output (LFE)

2
2

Headphone output

1 x 6.3
1 x 6.3

Optical digital input

2
1

Coaxial digital input

1
1

Composite input

2
0

Component input/output

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)

HDR10+
HDR10

4K signal pass-through

4K/120Hz
4K/60Hz

8K signal pass-through

8K/60Hz

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

Dynamic HDR, HLG, BT.2020
DeepColor, x.v.Color, HLG, BT.2020

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
USB

Other additional features

Web Control, App Control
has not

Multi-room

Multi-room zones

has not
2

Zone audio output

has not
speaker

Zone HDMI output

has not

Multi-room control

HEOS App, Denon 2016 AVR Remote
has not

RS-232

0
0

Remote control input/output (IR)

0/0
0/0

DC trigger output (12V)

0
0

Multichannel surround

Dolby Atmos

Dolby TrueHD

Dolby Surround

Dolby (other)

Dolby ProLogic Il
Dolby Digital Plus, Dolby Atmos Height Virtualization

DTS:X

DTS HD Master

DTS Virtual:X

DTS Neural:X

DTS (other)

DTS Neo:6
DTS-ES, DTS 96/24, DTS-HD, DTS-EXPRESS

Auro-3D

IMAX Enhanced

Multichannel stereo

Audio file formats

MP3

WMA

AAC

WAV

FLAC

ALAC

Other audio file formats

AIFF, DSD
has not

Power

Operational power consumption, W

340
490

Standby consumption, W

0.1
0.1

Removable power cord

User manual

Manual

Dimensions

Size W x H x D, cm/inches

43.4 x 33.9 x 21.5/17 x 13.3 x 8.4
43.5 x 16.1 x 32.7/17 x 6.3 x 12.6

Weight, kg/lbs

7.8/17
8.2/18.1

Other

Release year

2021
2019
Denon AVR-S660H
Onkyo TX-SR494
Denon AVR-S660H
Onkyo TX-SR494

AV receivers SoundInspiration comparison rating

  • better
  • worse
  • 6.7
  • 5.5
  • 6.7Denon AVR-S660H
  • 5.5Onkyo TX-SR494