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

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Votes 1 1
Rating 5 5

Common

Product

Onkyo TX-NR646
Onkyo TX-NR545

Model

TX-NR646
TX-NR545

Brand

Onkyo
Onkyo

Rating

3.5 of 5
3.6 of 5

Reviews

403
99

Amplifier

Total output power, W

580 W
700 W

Output power per channel, W

100 W, 170 W
115 W, 65 W

Output impedance, Ohm

6 Ohm, 8 Ohm
6 Ohms

Frequency response

20 Hz-20 kHz
20 Hz-20 kHz

Total harmonic distortion, THD

0.08 %
0.7 %

Channels

7
7

Signal-to-noise ratio

106 dB
106 dB

Connectivity interfaces

Bluetooth

Wi-Fi

Ethernet (RJ45)

USB

Connector type

HDMI inputs

8
6

HDMI outputs

2
1

AV inputs

2
6

Optical digital inputs

2
2

Optical digital outputs

has not
has not

Coaxial digital inputs

1
1

Coaxial digital outputs

has not
has not

Subwoofer outputs

2
2

USB

1
1

Phones

1
1

Sound features

Digital to analog converter (DAC)

32bit / 384kHz
32bit / 384kHz

Digital content protection

has not
HDCP 2.2

Additional features

Speaker A/B switching

Dual-zone capability

Three-zone capability

Bi-amping

Pure direct

Advanced sound retriever (ASR)

Audio return channel (ARC)

Smartphone remote control

Apple Air-play support

Signal processing

HDMI signal pass-through

Up to 4K
Up to 4K

Video conversion/scaling

Analog to HDMI up conversion
HDMI to HDMI scaling, analog to HDMI up conversion

3D signal pass-through

has not

Audio formats

MP3

WMA

AAC

AIFF

WAV

FLAC

Built-in decoders

DTS:X

Dolby Atmos

Dolby TrueHD

Built-in display

Type

fluorescent
fluorescent

Radio

Tuner bands

AM/FM
AM/FM

Number of preset station

40
40

Clock

Built-in clock

Sleep timer

has not

Power device

Operational power consumption, W

360 W
380 W

Standby consumption, W

0.1 W
0.1 W

User manual

Manual

Dimensions

Size W x H x D

12.9 x 17.1 x 6.8 inches
12.9 x 17.1 x 6.8 inches

Weight

20.7 pounds
19 pounds
Onkyo TX-NR646
Onkyo TX-NR545
Onkyo TX-NR646
Onkyo TX-NR545

AV receivers CHooseratoR comparison rating

  • better
  • worse
  • 14.6
  • 16.8
  • 14.6Onkyo TX-NR646
  • 16.8Onkyo TX-NR545

The Onkyo TX-NR545 is better receiver in this comparison. Check Onkyo TX-NR545 price

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