Product comparison · 2 av receivers

Yamaha RX-A670 7.2 channels Surround 3D Black vs Yamaha RX-A870 7.2 channels Surround 3D Black

46specifications compared
13differ
33identical
28known for one product only

Key differences

Dynamic power per channel (4 Ohm)
- RX-A670 7.2 channels Surround 3D Black:170 W
- RX-A870 7.2 channels Surround 3D Black:195 W
Output level
- RX-A670 7.2 channels Surround 3D Black:100 mV
- RX-A870 7.2 channels Surround 3D Black:470 mV
Output impedance
- RX-A670 7.2 channels Surround 3D Black:470 Ω
- RX-A870 7.2 channels Surround 3D Black:1700 Ω
HDMI in
- RX-A670 7.2 channels Surround 3D Black:4
- RX-A870 7.2 channels Surround 3D Black:8
Composite video in
- RX-A670 7.2 channels Surround 3D Black:3
- RX-A870 7.2 channels Surround 3D Black:1
Audio (L/R) in
- RX-A670 7.2 channels Surround 3D Black:4
- RX-A870 7.2 channels Surround 3D Black:5
Digital audio optical in
- RX-A670 7.2 channels Surround 3D Black:1
- RX-A870 7.2 channels Surround 3D Black:2
Number of HDMI outputs
- RX-A670 7.2 channels Surround 3D Black:1
- RX-A870 7.2 channels Surround 3D Black:2

Side by side

Differences highlightedShow differences only

Comparison of RX-A670, RX-A870
74 specifications	A Yamaha RX-A670 7.2 channels Surround 3D Black Model RX-A670 View product	B Yamaha RX-A870 7.2 channels Surround 3D Black Model RX-A870 View product
Audio3 differ
Audio output channels	7.2 channels	7.2 channels
Receiver type	Surround	Surround
Power output per channel (1KHz@8 Ohm)Known for one	Unknown — not stated by the source	160 W
Dynamic power per channel (4 Ohm)Differs	170 W	195 W
Dynamic power per channel (8 Ohm)Known for one	Unknown — not stated by the source	130 W
Input sensitivity	200 mV	200 mV
Output levelDiffers	100 mV	470 mV
Total Harmonic Distortion (THD)Known for one	Unknown — not stated by the source	10%
Input impedance	47 Ω	47 Ω
Output impedanceDiffers	470 Ω	1700 Ω
Audio D/A Converter (DAC)	24-bit/192kHz	24-bit/192kHz
Frequency rangeKnown for one	Unknown — not stated by the source	10 - 100000 Hz
RMS rated powerKnown for one	Unknown — not stated by the source	200 W
Signal-to-Noise Ratio (SNR)	110 dB	110 dB
Power output per channel (1KHz@6 Ohm)Known for one	145 W	Unknown — not stated by the source
Pre-out connectivityKnown for one	Yes	Unknown — not stated by the source
Inputs4 differ
HDMI inDiffers	4	8
Component video (YPbPr/YCbCr) inKnown for one	Unknown — not stated by the source	1
Composite video inDiffers	3	1
Audio (L/R) inDiffers	4	5
Digital audio optical inDiffers	1	2
Digital audio coaxial in	2	2
Remote (IR) inputKnown for one	Unknown — not stated by the source	1
Ethernet LAN (RJ-45) portsKnown for one	Unknown — not stated by the source	1
USB ports quantity	1	1
Outputs1 differ
Number of HDMI outputsDiffers	1	2
Remote (IR) outputKnown for one	Unknown — not stated by the source	1
Headphone outputs	1	1
Composite video outKnown for one	1	Unknown — not stated by the source
Ports & interfacesidentical
Connectivity technology	Wired & Wireless	Wired & Wireless
12V triggerKnown for one	Unknown — not stated by the source	Yes
12V trigger ports quantityKnown for one	Unknown — not stated by the source	1
Phono inputs (RCA)Known for one	Unknown — not stated by the source	1
File formatsidentical
Audio formats supported	AIFF, FLAC, WAV	AIFF, FLAC, WAV
Networkidentical
Ethernet LAN	Yes	Yes
Wi-Fi	Yes	Yes
Bluetooth	Yes	Yes
Bluetooth versionKnown for one	2.1+EDR	Unknown — not stated by the source
Bluetooth profilesKnown for one	A2DP, AVRCP	Unknown — not stated by the source
Radio1 differ
Supported radio bands	DAB, DAB+, FM	DAB, DAB+, FM
Internet radio	Yes	Yes
Internet radio services supportedDiffers	JUKE, Qobuz, Deezer, Pandora, Tidal	Deezer, Napster, Pandora, Spotify, Tidal
Auto digital tuningKnown for one	Yes	Unknown — not stated by the source
Preset stations quantityKnown for one	40	Unknown — not stated by the source
Optical driveidentical
Optical drive includedKnown for one	Unknown — not stated by the source	No
Storageidentical
Card reader integrated	No	No
Videoidentical
Analog signal format systemKnown for one	Unknown — not stated by the source	NTSC, PAL, SECAM
3D	Yes	Yes
Video upscaling	Yes	Yes
Supported video modesKnown for one	480i, 480p, 576i, 576p, 720p, 1080i, 1080p	Unknown — not stated by the source
Technical details1 differ
Audio decodersDiffers	DSD, DTS, DTS Digital Plus, DTS-HD Master Audio, DTS:X, Dolby Atmos, Dolby Digital Plus, Dolby Surround, Dolby TrueHD	DTS 96/24, DTS Digital Plus, DTS Digital Surround, DTS-ES, DTS-ES (Matrix 6.1), DTS-HD, DTS:X, Dolby Atmos, Dolby Digital, Dolby Digital EX, Dolby Digital Plus, Dolby Surround, Dolby TrueHD
Deep colour support	Yes	Yes
x.v.Color support	Yes	Yes
Audio Return Channel (ARC)	Yes	Yes
Digital Signal Processing (DSP)	Yes	Yes
AV input	Yes	Yes
AirPlay	Yes	Yes
Audio Lip synchronization	Yes	Yes
Auto standby	Yes	Yes
Bi-amping	Yes	Yes
Damping factorKnown for one	Unknown — not stated by the source	100
Detachable power cordKnown for one	Unknown — not stated by the source	Yes
On Screen Display (OSD)	Yes	Yes
On Screen Display (OSD) languagesKnown for one	Unknown — not stated by the source	German, English, Spanish, French, Italian, Japanese, Russian
Product colour	Black	Black
RS-232 interfaceKnown for one	Unknown — not stated by the source	Yes
Remote control included	Yes	Yes
Video compression formatsKnown for one	Unknown — not stated by the source	MPEG1, MPEG4
Sustainability certificatesKnown for one	ENERGY STAR	Unknown — not stated by the source
Poweridentical
Power consumption (standby)	0.1 W	0.1 W
Weight & dimensions3 differ
Width	435 mm	435 mm
DepthDiffers	330 mm	382 mm
HeightDiffers	225.5 mm	171 mm
WeightDiffers	8.3 kg	10.5 kg

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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