Yamaha RX-V681BL vs. Onkyo TX-NR555

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Common

Model

RX-V681BL
TX-NR555

Brand

Yamaha
Onkyo

Rating on Amazon

4.2
4.1

Reviews on Amazon

256
245

Functions

Digital player

Internet radio

Network audio player

Amplifier class

D

Audio formats

AAC

AIFF

Apple lossless

DSD

FLAC

MP3

WAV

WMA

Built-in decoders

DTS neural:X

DTS-HD master audio

DTS:X

Dolby atmos

Dolby digital plus

Dolby surround

Dolby true HD

Power device

Power consumption cperational

260 W
460 W

Power consumption stand by

0.1 W
0.1 W

Built-in display

Type

fluorescent
fluorescent

Colour

black
black

Amplifier

Total output power

525 W
560 W

Output power per channel

105 W, 150 W, 90 W
140 W, 80 W

Output impedance per channel

8 Ohm
6 Ohm, 8 Ohm

Frequency response

20 Hz-20 kHz
20 Hz-20 kHz

Total harmonic distortion

0.09 %
0.08 %

Number of channels

7
7

Signal-to-noise ratio

96 dB
106 dB

Connectivity interfaces

Bluetooth

Wi-Fi

IEEE 802.3

IEEE 802.3u

Signal processing

HDMI pass-through

up to 4K
up to 4K

Video conversion/scaling

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

3D pass-through

Upscaling via HDMI

up to 4K
up to 4K

Connector type

AV inputs

2
2

Optical digital inputs

1
2

Coaxial digital inputs

2
1

HDMI inputs

6
6

HDMI outputs

1
1

Optical digital outputs

has not
has not

Coaxial digital outputs

has not
has not

Subwoofer outputs

2
2

USB

1
1

Phones

1
1

Media content source

Bluetooth

Network

USB-host

Radio

Tuner type

digital
digital

Tuner bands

AM/FM
AM/FM

Preset station qty

40
40

Additional features

A-B speaker switch

AIR Studios monitor certification

Three-zone capability

X.v.Color

Advanced sound retriever (ASR) technology

Apple air-play support

Audio return channel (ARC)

Bi-amplifying

Deep color

MCACC Pro

Auto power off

Pure direct mode

Dual-zone capability

Smartphone remote controlled

Sound features

Sound output mode

Surround Sound
Surround Sound

Audio D/A converter

24bit / 192kHz
32bit / 384kHz

Surround sound effects

CINEMA DSP 3D. SILENT CINEMA DSP. Virtual CINEMA DSP. Virtual CINEMA FRONT. Virtual Presence Speaker. Virtual Surround Back Speaker
Theater-Dimensional Virtual Surround

Surround system class

7.2 channel
7.2 channel

Digital sound processor (DSP)

DSP preset qty

17
4

Digital content protection

HDCP 2.2
has not

Clock

Built-in clock

has not

Sleep timer

has not

Dimensions

Shipping size

14.9 x 17.1 x 6.8 inches
22.5 x 18 x 11 inches

Product weight

22.1 pounds
22 pounds

AV receivers comparison rating

  • better
  • worse
  • 34.5
  • 27.5
  • 34.5Yamaha RX-V681BL
  • 27.5Onkyo TX-NR555

The best receiver is Yamaha RX-V681BL. Check Yamaha RX-V681BL price on Amazon