Onkyo TX-NR555 vs Onkyo TX-8140 review

Votes 1 1
Rating 5 5

AV receivers comparison chart

Onkyo TX-NR555 vs Onkyo TX-8140 review

Onkyo TX-NR555
vs
Onkyo TX-8140

An affordable AV receiver is always a good option to consider, so Onkyo TX-NR555 vs Onkyo TX-8140 comparison definitely makes sense.

Amplifier

A significant difference between the receivers in the number of channels, Onkyo TX-NR555 has 7.2 versus 2.0 for Onkyo TX-8140. Regarding power, then TX-NR555 has such a W/Ohm ratio - 130/6 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, Hi-Grade 384 KHz/32-bit for TX-NR555 and AK4458 384 KHz/32-bit for the TX-8140. Only the TX-NR555 supports Bi-amping feature. 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. Spotify can be used on each receiver. The TX-NR555 can work with the audio stream from Deezer, TIDAL, Pandora, and the TX-8140 can receive a content from SiriusXM.

Video features

Only the Onkyo TX-NR555 has support for High dynamic range (HDR). Only the TX-NR555 provides HDMI signal transmission in standby mode. Both competitors are not able to scale the HDMI signal. The HDR standard - Dolby Vision is not supported by these receivers. Only the TX-NR555 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 TX-NR555. These compared receivers have a built-in phono stage for connecting a vinyl player. A voice control is not available. An ECO mode is only available for the TX-NR555. The setup assistant will help you configure Onkyo TX-8140.

Multichannel surround

Only the TX-NR555 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the TX-NR555.

Add receiver to comparison
We didn't find anything to show here

General

Item

Onkyo TX-NR555
Onkyo TX-8140

Model

TX-NR555
TX-8140

Brand

Onkyo
Onkyo

Reviews

82
165

Amplifier

Channels

7.2
2.0

Stereo power (RMS), W/Ohm

130/6
80/8, 110/6

Output impedance, Ohm

6
8, 6

Frequency response

10Hz-100KHz
10Hz-100KHz

THD in stereo, %

0.08
0.08

Audio features

Digital to analog converter (DAC)

Hi-Grade 384 KHz/32-bit
AK4458 384 KHz/32-bit

Bi-amping

Pure direct (straight)

Auto speaker calibration

AccuEQ

Speaker A/B switching

Other audio features

Double Bass Function, CinemaFILTER
WRAT, Hi-Res audio

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

Deezer, TIDAL, Pandora
SiriusXM

Extensive connection

HDMI input/output

6/1
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

2/0
0/0

Phono (MM) input

Front panel connectors

phones, setup mic, AUX
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

Analog to HDMI scaling

HDMI to HDMI scaling

Dolby Vision

Other video features

DeepColor, x.v.Color
has not

Additional features

Voice control

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

has not
has not

Multi-room

Multi-room zones

2
has not

Zone audio output

speaker, preout
has not

Zone HDMI output

has not

Multi-room control

FlareConnect
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)

has not
has not

DTS:X

DTS HD Master

DTS Virtual:X

DTS Neural:X

DTS (other)

has not
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

460

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 17.3 x 37.8/17 x 6.7 x 14.5
43.5 x 14.9 x 32.8/17 x 5.5 x 12.6

Weight, kg/lbs

9.4/20.7
8.2/18.1

Other

Release year

2016
2016
Onkyo TX-NR555
Onkyo TX-8140
Onkyo TX-NR555
Onkyo TX-8140

AV receivers SoundInspiration comparison rating

  • better
  • worse
  • 7
  • 6.5
  • 7Onkyo TX-NR555
  • 6.5Onkyo TX-8140