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Common
Model
VSX-831
RX-V677
Brand
Pioneer
Yamaha
Rating on Amazon
3.4
4.1
Reviews on Amazon
28
570
Functions
Digital player
Internet radio
Network audio player
Amplifier class
D
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. Watt
380
400
Power consumption stand by, Watt
0.1
0.15
Built-in display
Type
fluorescent
fluorescent
Colour
black
black
Amplifier
Output power /total. Watt
525
630
Output power / channel
140 Watt. 80 Watt
105 Watt. 90 Watt
Output Impedance / channel
Frequency response
20 - 20000 kHz. at 1 kHz
20 - 20000 Hz. at 1 kHz
Total harmonic distortion (THD)
0.08 %. 1%
0.09 %. 0.9 %
Channel qty
1.2
7
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
HDMI to HDMI scaling, analog to HDMI up conversion
3D pass-through
Upscaling via HDMI
up to 4K
up to 4K
Connector Type
19 pin HDMI type A
RCA x 2
RCA x 3
RJ-45
TOSLINK
Banana/spade x 2
Click-fit x 2
Mini-phone 3.5 mm
Phone stereo 6.3 mm
4 pin USB Type A
9 pin D-Sub
F connector
RCA
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
32bit / 384kHz
24bit / 192kHz
Surround sound effects
Front Stage Surround Advance
CINEMA DSP 3D. SILENT CINEMA DSP. Virtual CINEMA DSP. Virtual CINEMA FRONT. Virtual Presence Speaker
Surround system class
5.2 channel
7.2 channel
Digital sound processor (DSP)
DSP preset qty
17
Digital content protection
HDCP 2.2
HDCP 2.2
Clock
Built-in clock
Sleep timer
Dimensions
Shipping size
14.6 x 17.1 x 6.8 inches
14.4 x 17.1 x 6.8 inches
Product weight
19.8 pounds
22.1 pounds
Amplifier
Output Impedance / сhannel
6 Ohm. 8 Ohm
8 Ohm
AV receivers comparison rating
- 35Pioneer VSX-831
- 31Yamaha RX-V677
The best receiver is Pioneer VSX-831. Check Pioneer VSX-831 price on Amazon
