Onkyo TX-NR646 vs Onkyo TX-NR545

Onkyo TX-NR646 vs Onkyo TX-NR545

Onkyo TX-NR646 review

Onkyo TX-NR646 produces 160 W/channel and is equipped with the new AK4458 DAC from Asahi Kasei, providing "transparent" soundtracks. In addition to modern audio decoders, the unit has support for HDCP 2.2 for playing 4K streaming video with Dolby Atmos or DTS: X. In addition to this, the High Dynamic Range is supported. The receiver is equipped with an automatic equalizer, as well as a special connector for connecting a vinyl player. And also the manufacturer provides a flexible calibration system (AccueEQ). The device provides audio streaming via Wi-Fi, AirPlay, and Bluetooth. Spotify is also supported.

Onkyo TX-NR646

Onkyo TX-NR545 review

The 7.2-channel Onkyo TX-NR545 provides smooth and surround sound in games and movies, as well as powerful sound, sensitivity, and dynamic accuracy when playing music, including streaming. Between the receivers from Onkyo TX-NR646 vs Onkyo TX-NR545 comparison, there is a difference in amplifier power, it is 100 W / channel at 6 Ohms versus 115 W / channel with the same impedance. The device uses a discrete amplification system, which ensures maximum performance when using Dolby Atmos. The TX-NR545 has built-in Bluetooth and Wi-Fi receivers and supports AirPlay technology. For streaming music, there is a Spotify Connect application.

Onkyo TX-NR545

Onkyo TX-NR646 pros and cons

Pros

  • There is a Quick Setup function to simplify receiver setup
  • It is possible to display an image in a 21:9 format

Cons

  • The device has poor responsiveness to music playback commands such as pause \ start

Onkyo TX-NR545 pros and cons

Pros

  • To control the receiver and stream audio stored on the phone, the Onkyo Remote application is provided
  • TX-NR545 uses high-performance 384 kHz / 32 bit DAC AK4458 from Asahi Kasei

Cons

  • There is no way to play files from external USB devices

Votes 1 1
Rating 5 5

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Common

Product

Onkyo TX-NR646
Onkyo TX-NR545

Model

TX-NR646
TX-NR545

Brand

Onkyo
Onkyo

Reviews

403
99

Amplifier

Channels

7.2
7.2

Stereo power (RMS), W/Ohm

160/6 1KHz
100/6 1KHz

Output impedance, Ohm

6
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
Hi-Grade 384 KHz/32-bit

Bi-amping

Pure direct (straight)

Auto speaker calibration

AccuEQ
AccuEQ

Speaker A/B switching

Other audio features

Theater-Dimensional, Double Bass Function, CinemaFILTER
Theater-Dimensional, 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
AirPlay

Google Play Music

Amazon Music

Spotify

Other streaming services

Deezer, TuneIn Radio
Tunein Radio

Extensive connection

HDMI input/output

8/2
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

1 x 6.3
1 x 6.3

Optical digital input

2
2

Coaxial digital input

1
1

Composite input

3
4

Component input/output

2/0
2/0

Phono (MM) input

Front panel connectors

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

Multi channel preamp output

Video features

HDR (High Dynamic Range)

4K signal pass-through

4K 60p
4K 60p

HDMI signal pass-through

3D signal pass-through

HDMI pass-through in standby mode

Video conversion

analog to HDMI
analog to HDMI

Analog to HDMI scaling

HDMI to HDMI scaling

Dolby Vision

Other video features

DeepColor, x.v.Color
DeepColor, x.v.Color

Additional features

Voice control

App control

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

Display

fluorescent
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
2

Zone audio output

speaker, preout
speaker, preout

Zone HDMI output

Multi-room control

Onkyo Remote App
Onkyo Remote App

RS-232

0
0

Remote control input/output (IR)

1/0
1/0

DC trigger output (12V)

0
0

Multichannel surround

Dolby Atmos

Dolby TrueHD

Dolby Surround

Dolby (other)

Dolby Digital Plus
Dolby Digital Plus

DTS:X

DTS HD Master

DTS Virtual:X

DTS Neural:X

DTS (other)

has not
DTS-ES, DTS Neo:6 Cinema, DTS 96/24, DTS-EXPRESS

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

630
430

Standby consumption, W

0.15
0.15

Removable power cord

User manual

Manual

Dimensions

Size W x H x D, cm/inches

43.5 x 17.3 x 33/17 x 6.8 x 13
57 x 28.7 x 42.3/22.4 x 11 x 16.5

Weight, kg/lbs

9.4/19.8
11.5/24.2
Onkyo TX-NR646
Onkyo TX-NR545
Onkyo TX-NR646
Onkyo TX-NR545

AV receivers CHooseratoR comparison rating

  • better
  • worse
  • 7.4
  • 7.2
  • 7.4Onkyo TX-NR646
  • 7.2Onkyo TX-NR545

The Onkyo TX-NR646 is better receiver in this comparison. Check Onkyo TX-NR646 price