Best Product Fit

Head-to-head

Denon AVR-S670H vs Yamaha RX-V4A: Denon accepts six sources and MM phono, Yamaha fits an existing MusicCast home

The short answer

Choose the S670H for six HDMI sources and a direct MM turntable connection. Choose the RX-V4A when the room already uses MusicCast and four HDMI sources are enough, after checking its HDMI hardware and video-format limits.

Before you choose

The reasoning and the trade-offs

A shelf can decide the pair before HDMI does

The RX-V4A needs about 1.6 inches more front-to-back space than the S670H.

What this is based on

Subtracting the published 13.3-inch Denon depth from Yamaha's 14.875 inches gives 1.575 inches, before ventilation and cables.

Main trade-off

Denon AVR-S670H

Only three HDMI inputs are 4K120-capable.

Main trade-off

Yamaha RX-V4A

Four total HDMI inputs and no MM phono socket.

Denon AVR-S670H

Denon AVR-S670H

Choose it for
  • Five or six HDMI sources should stay connected
  • A phono-only MM turntable needs a direct connection
Main trade-off
Only three HDMI inputs are 4K120-capable.
See price & reviews on Amazon
Yamaha RX-V4A

Yamaha RX-V4A

Choose it for
  • MusicCast is already used in other rooms
  • Four HDMI sources and YPAO setup fit the plan
Main trade-off
Four total HDMI inputs and no MM phono socket.
See price & reviews on Amazon

Analysis updated , Catalog updated , Amazon.com / United States

About this comparison

Compare Denon S670H and Yamaha RX-V4A for a five-speaker room, including music platforms, phono inputs and Yamaha HDMI hardware checks.

Choose the S670H for six HDMI sources and a direct MM turntable connection. Choose the RX-V4A when the room already uses MusicCast and four HDMI sources are enough, after checking its HDMI hardware and video-format limits.

Winner by situation

Start with what you need it to do

  • Six HDMI sources and an MM turntable

    S670H has six inputs and an MM stage. RX-V4A has four inputs and no MM stage.

    Denon AVR-S670H
    Better fit
    Yamaha RX-V4A
    Caution

  • An existing MusicCast home

    RX-V4A joins the relevant music platform.

    Denon AVR-S670H
    Depends
    Yamaha RX-V4A
    Better fit

  • An existing HEOS home

    S670H joins the relevant music platform.

    Denon AVR-S670H
    Better fit
    Yamaha RX-V4A
    Depends

  • Four 4K120 sources on an unidentified RX-V4A hardware revision

    Denon has only three fast inputs. Yamaha's exact hardware, firmware and format need confirmation.

    Denon AVR-S670H
    Caution
    Yamaha RX-V4A
    Depends

What matters in practice

The differences that matter

A shelf can decide the pair before HDMI does

The RX-V4A needs about 1.6 inches more front-to-back space than the S670H.

How we reached this conclusion

Subtracting the published 13.3-inch Denon depth from Yamaha's 14.875 inches gives 1.575 inches, before ventilation and cables.

A fourth fast port is not a universal format promise

Choose the RX-V4A for four 4K120 inputs only after checking the exact signal and hardware revision.

How we reached this conclusion

Yamaha specifies a 24Gbps video path and documents an HDMI board update for some early units with certain sources.

Neither network platform adds speaker channels

The MusicCast versus HEOS decision is separate from physical Atmos expansion.

How we reached this conclusion

Both receivers have five main amplifier channels and documented 5.1 configurations.

Plan your receiver connectionsPlan my setup

Check a documented speaker layout against HDMI sources and external-amplifier plans.

0 models match your answersNo model meets every answer

Try adjusting one requirement. We have not recommended a model that misses your setup.

Denon AVR-S670H

Does not support this setup

This layout is outside the documented speaker configurations.

Yamaha RX-V4A

Does not support this setup

This layout is outside the documented speaker configurations.

A powered subwoofer is separate from the speaker-channel count. This checks one main room. Zone 2, bi-amping and unusual speaker assignments need another manual check. Allow ventilation space and confirm HDMI settings, cables and speaker impedance before installing.

Choice A
Denon AVR-S670H

Denon, AVR-S670H

AVR-S670H

A five-speaker receiver with six HDMI inputs, HEOS streaming and a moving-magnet phono input. It suits a room that will stay at 5.1.

Best matched use
Five-speaker film and record listening

Checked facts

  • 5 built-in amplifier channels and 5 main processing channels
  • 6 HDMI inputs, including 3 supporting 4K120 video
  • 1 HDMI output
  • Audyssey MultEQ room setup
  • 0 full-range main-channel pre-outs, excluding subwoofer outputs
  • 6-inch chassis height with antennas horizontal, before ventilation space
See price & reviews on Amazon
Choice B
Yamaha RX-V4A

Yamaha, RX-V4A

RX-V4A

A five-channel MusicCast receiver with four HDMI inputs and YPAO setup. It works for a room staying at 5.1, especially when MusicCast is already part of the home.

Best matched use
A five-speaker MusicCast room

Checked facts

  • 5 built-in amplifier channels and 5 main processing channels
  • 4 HDMI inputs, including 4 supporting 4K120 video
  • 1 HDMI output
  • YPAO room setup
  • 0 full-range main-channel pre-outs, excluding subwoofer outputs
  • 6.75-inch chassis height with antennas horizontal, before ventilation space
See price & reviews on Amazon

Meaningful differences

What changes the fit

Meaningful differences between Denon AVR-S670H and Yamaha RX-V4A
What changesDenon AVR-S670HYamaha RX-V4AWhy it matters
HDMI source inputs64The Denon accommodates two more sources without a switch.
4K120 input count34 with format and hardware caveatsYamaha's numerical advantage needs a source-format and hardware-revision check.
Network music platformHEOSMusicCastExisting multiroom speakers can determine which app and ecosystem fits.
MM phono inputYesNoThe Yamaha needs a line-output turntable or an external phono stage.
Automatic room correctionAudyssey MultEQYPAOThe setup and correction systems differ.
Published chassis depth13.3 inches14.875 inchesThe Yamaha takes about 1.6 inches more shelf depth before cable bends.

What you give up

Every choice has a cost

If you choose Denon AVR-S670H

  • HEOS does not join a MusicCast speaker group.

If you choose Yamaha RX-V4A

  • Early-unit hardware and 24Gbps video limits need checking.

Recommendation switch

The decision flips if...

Five or six HDMI sources should stay connected

Choose Denon AVR-S670H. Its six HDMI inputs keep five or six sources connected.

MusicCast is already used in other rooms

Choose Yamaha RX-V4A. Its MusicCast support joins the existing music setup. Check HDMI board eligibility before a 4K120 plan.

Two physical height speakers will be installed

Choose neither. The documented processing or internal-amplifier layouts do not cover this requirement. Choose a receiver with the required physical configuration.

What matters in practice

How to make the call

01

Match the existing music system

HEOS and MusicCast are useful when their receivers need to share music with compatible equipment elsewhere. A home already using one platform has a practical reason to stay with it. Neither ecosystem preference changes the number of physical main-room speakers supported here. These are five-channel receivers for a room that will stay at 5.1.

02

Audit the video path on the Yamaha

Yamaha's four HDMI inputs carry a 24Gbps specification and the manufacturer documented a hardware update for certain early receivers used with Xbox Series X or NVIDIA RTX30 at 4K120. Later production units were unaffected by that particular issue. A current firmware version and the exact signal format still matter, so a count of four should never be read as unrestricted compatibility.

03

Count analog equipment and shelf depth

The S670H's MM phono input can remove one box from a record-playing system. The RX-V4A remains usable with a turntable that supplies line-level audio. Its deeper chassis also changes the cabinet calculation. Measure the rear plug and cable space separately, because the published chassis dimensions are not a complete installation envelope.

Check these before buying

  • For RX-V4A, confirm HDMI hardware revision, firmware and source format before relying on 4K120.
  • Measure shelf depth with connected HDMI and speaker cables.
  • Check turntable output level.

What this comparison cannot tell you

  • The comparison does not claim that one calibration system will sound better in an unmeasured room.

What the facts say

What the comparison shows

Useful conclusions from the current AV receivers comparison, followed by the checked facts used to reach them.

Compared set

Only 2 of 34 models checked match every need here: “Keep a five-speaker system”, “Leave six HDMI sources connected”, and “Connect an MM turntable directly”.

2 matching models from 34 checked
See the checked facts and calculation notes
Compared set
34 models
Source records
7 for the products shown
Catalog updated

Match countThe count uses the current product-to-need assignments for “Keep a five-speaker system”, “Leave six HDMI sources connected”, and “Connect an MM turntable directly”. A need with no documented match does not count.

Facts and source records used for the products in this recommendation
ProductNeeds matchedChecked factsSource records
Denon AVR-S670H
  • Keep my five speakers
  • Keep six devices connected
  • Connect my turntable
  • 5 built-in amplifier channels and 5 main processing channels
  • 6 HDMI inputs, including 3 supporting 4K120 video
  • 1 HDMI output
Yamaha RX-V4A
  • Keep my five speakers
  • 5 built-in amplifier channels and 5 main processing channels
  • 4 HDMI inputs, including 4 supporting 4K120 video
  • 1 HDMI output

Ready to choose?

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