Question 1

Compared to the newer rx-v683 and major differences? i am planning to use it with lg c7 65 and to play 4k content from new appletv and xbox one x?

Accepted Answer

I see one big difference comparing the pictures of the back of the v681 and v683: the 681 has a Monitor Out Component (and composite) video jacks, in addition to the HDMI monitor out. The 683 does not appear to have that, only HDMI out.

Question 2

What's the difference between this and the 679?  all inputs hdmi 2.0?

Accepted Answer

Biggest differences are the phono input and support of Dolby Atmos and DTS:X.  Additionally, the 681 includes HDMI version 2.0a chipset versus 2.0 chipset in the 679. In theory, you may keep up with future firmware updates for longer.Download the phone app to control these units or buy a programmable remote.  The included remote is not so great.

Question 3

Will this unit play the same output on zone 1 & 2?

Accepted Answer

Same output but NO tone control.  Sounds flat.

Question 4

are the subwoofer crossovers individual for each channel or global (one setting for all channels)?

Accepted Answer

With one subwoofer plugged in, SubWoofer Trim (on Options submenu) is + or - 6 dB in half dB increments, so I would assume one or two connected SWs would be trimmed together by this control.  The amount of deep bass comfortable to the listener's hearing is what is apparently affected by this control. (each.5 dB change is quite noticeable with my one 12" SW in the medium sized room where I listen.) (The one SW is more bass than I need, especially at low volumes, so I'm glad for the trim adjustment so I don't have to crawl behind equipment to adjust SW bass for smooth jazz, baroque, action movie bass offerings.)  ( mine is a "bright" room, (an 8" SW is enough.)) (the dual 8" woofers in my mains are actually enough bass for 95% of what I listen to.)

ASIN	B01BY7YUKI
Audio Output Mode	Surround
Audio Output Type	Speakers
Best Sellers Rank	#995,506 in Electronics ( See Top 100 in Electronics ) #843 in Audio Component Receivers
Brand	Yamaha
Built-In Media	AV receiver^calibration microphone^remote control^AM/FM antennea^owners manual
Color	Black
Compatible Devices	Smartphone, Speaker
Connectivity Technology	Bluetooth, Wi-Fi
Connector Type	HDMI
Control Method	Voice
Controller Type	Amazon Alexa, Vera
Customer Reviews	4.2 4.2 out of 5 stars (352)
External Testing Certification	Works with Alexa
Format	Unknown format
Global Trade Identification Number	00027108953731
Item Weight	22.1 Pounds
Manufacturer	YAMH9
Mfr Part Number	RX-V681BL
Model Number	RX-V681BL
Number of Channels	2
Other Special Features of the Product	Pandora, Tidal, eARC
Output Power	145 Watts
Output Wattage	145 Watts
Supported Internet Services	Pandora
Surround Sound Channel Configuration	7.2
Total Number of HDMI Ports	6
UPC	027108953731
Video Encoding	Dolby Atmos
Warranty Description	2-years
Wireless Technology	BluetoothAirplayWi-Fi

YAMAHA RX-V681 7.2-Channel Network A/V Receiver with Bluetooth and Wi-Fi

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