Sony STR-ZA2100ES vs Onkyo TX-NR555 review

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Rating 5 5

AV receivers comparison chart

Sony STR-ZA2100ES vs Onkyo TX-NR555 review

Sony STR-ZA2100ES
vs
Onkyo TX-NR555

An affordable AV receiver is always a good option to consider, so Sony STR-ZA2100ES vs Onkyo TX-NR555 comparison definitely makes sense.

Amplifier

Considered AV receivers have the same number of channels 7.2. Regarding power, then STR-ZA2100ES has such a W/Ohm ratio - 75/8, 95/6 when TX-NR555 has a power of 130/6. The THD is 0.09% for the STR-ZA2100ES but 0.08% for the TX-NR555. Both the STR-ZA2100ES and the TX-NR555 support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. Only the TX-NR555 supports Spotify. Compared AV receivers retain the quality of 4K/60Hz signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. The STR-ZA2100ES can scale the input HDMI signal, unlike the TX-NR555. Dolby Vision technology found support only on the STR-ZA2100ES.

Extensive connections

The Sony STR-ZA2100ES has 6/2 HDMI inputs/outputs versus 6/1 HDMI connectors of the Onkyo TX-NR555.Sony STR-ZA2100ES connectionsOnkyo TX-NR555 connections The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the STR-ZA2100ES. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. Both models support the standard HDCP 2.2. The TX-NR555 has a built-in phono stage for connecting a vinyl player.

Additional features

Each of the AV receivers from our review supports 2 Multi-room zones. A voice control is not available. An ECO mode is only available for the TX-NR555. The setup assistant will help you configure Sony STR-ZA2100ES.

Multichannel surround

Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review.

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General

Item

Sony STR-ZA2100ES
Onkyo TX-NR555

Model

STR-ZA2100ES
TX-NR555

Brand

Sony
Onkyo

Reviews

7
82

Amplifier

Channels

7.2
7.2

Stereo power (RMS), W/Ohm

75/8, 95/6
130/6

Output impedance, Ohm

8, 6
6

Frequency response

10Hz-100KHz
10Hz-100KHz

THD in stereo, %

0.09
0.08

Audio features

Digital to analog converter (DAC)

Hi-Grade 384 KHz/32-bit

Bi-amping

Pure direct (straight)

Auto speaker calibration

DCAC EX
AccuEQ

Speaker A/B switching

Other audio features

Digital Legato Linear, Sound Optimizer
Double Bass Function, CinemaFILTER

Connectivity

Wi-Fi

2.4/5GHz

USB

1 (USB 2.0)
1 (USB 2.0)

Bluetooth

Ethernet (RJ45)

1
1

DLNA

MHL

Streaming services

Apple Music (AirPlay)

AirPlay

Amazon Music

Spotify

Other streaming services

has not
Deezer, TIDAL, Pandora

Extensive connection

HDMI input/output

6/2
6/1

HDMI ARC (Audio Return Channel)

HDMI eARC (Enhanced Audio Return Channel)

HDMI CEC

Digital content protection (HDCP)

HDCP 2.2
HDCP 2.2

Subwoofer output (LFE)

2
2

Headphone output

0
1 x 6.3

Optical digital input

2
2

Coaxial digital input

1
1

Composite input

2
2

Component input/output

2/0
2/0

Phono (MM) input

Front panel connectors

USB, HDMI, setup mic
phones, setup mic, AUX

Multi channel preamp output

Video features

HDR (High Dynamic Range)

HDR10

4K signal pass-through

4K/60Hz
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

Analog to HDMI scaling

HDMI to HDMI scaling

Dolby Vision

Other video features

HLG
DeepColor, x.v.Color

Additional features

Voice control

App control

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

Display

colour OSD
colour OSD

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

has not
has not

Multi-room

Multi-room zones

2
2

Zone audio output

speaker, preout
speaker, preout

Zone HDMI output

Multi-room control

has not
FlareConnect

RS-232

1
0

Remote control input/output (IR)

1/2
0/0

DC trigger output (12V)

3
0

Multichannel surround

Dolby Atmos

Dolby TrueHD

Dolby Surround

Dolby (other)

Dolby Digital Plus
has not

DTS:X

DTS HD Master

DTS Virtual:X

DTS Neural:X

DTS (other)

DTS-ES, DTS 96/24, DTS-HD
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

290
460

Standby consumption, W

0.3
0.1

Removable power cord

User manual

Manual

Dimensions

Size W x H x D, cm/inches

43 x 17.6 x 41/17 x 6.8 x 16.1
43.5 x 17.3 x 37.8/17 x 6.7 x 14.5

Weight, kg/lbs

12.2/27.1
9.4/20.7

Other

Release year

2017
2016
Sony STR-ZA2100ES
Onkyo TX-NR555
Sony STR-ZA2100ES
Onkyo TX-NR555

AV receivers SoundInspiration comparison rating

  • better
  • worse
  • 6.5
  • 7
  • 6.5Sony STR-ZA2100ES
  • 7Onkyo TX-NR555