No. On almost every television only one HDMI port carries the Audio Return Channel, and plugging into any other one gives you a soundbar that stays silent while everything appears connected.
My TV has a specific HDMI port for it, which is the normal arrangement rather than an unusual one. Finding that port is most of the setup. Our note on whether ARC needs a special cable covers the cable question.
Quick Answer
One port only, and it is labeled. Look for ARC or eARC printed beside the HDMI number on the back or side panel of the television.
What the Labels Mean
| Label | Means |
|---|---|
| HDMI (ARC) | Standard Audio Return Channel |
| HDMI (eARC) | Enhanced, higher bandwidth, backward compatible |
| HDMI (ARC/eARC) | Supports both depending on the connected device |
| HDMI with no suffix | Video input only, no audio return |
| Optical or digital audio out | Separate connection, not ARC |
Why Only One Port
ARC repurposes a pin inside the HDMI connector to send audio backward along a cable designed to carry video forward.
That requires additional circuitry behind the port, and manufacturers fit it to one port rather than all of them because there is no reason to duplicate it.
A television only needs one audio return path, since audio goes to one sound system.
eARC works the same way with more bandwidth, and it is likewise fitted to a single port. Our note on choosing a soundbar covers what to look for at purchase.
Finding It on Your Television
Check the printed labels
The suffix is printed beside the port number, and it is small. Good light and a phone camera help on a wall-mounted set.
Check the manual
Faster than reading tiny text behind furniture, and the diagram states it exactly.
It is rarely HDMI 1
Manufacturers vary in which port they use, and assuming the first one is a common mistake.
Side ports are sometimes excluded
Televisions with both rear and side connections usually put ARC on the rear cluster.
What My Setup Looks Like
There is a specific HDMI port on my television for this, labeled and separate from the others.
That is worth stating plainly because a great deal of setup advice skips it, and someone plugging into whichever port is free will get no sound and no obvious reason why.
The soundbar end matters too, since bars usually have both an HDMI out to TV and additional HDMI inputs for other devices.
Connecting the television to a bar’s input rather than its output is the mirror image of the same mistake and produces the same silence. Our note on whether you need CEC for ARC covers the control layer.
Televisions With No ARC at All
Older sets predate the standard, and the question becomes what to use instead rather than which port.
Optical is the usual answer, carrying compressed surround from a dedicated digital audio output. It works well and does not carry control signals, so the television remote will not adjust the bar.
The analog headphone output is the fallback below that, carrying stereo only and usually disabling the television speakers automatically.
Bluetooth is available where the television supports audio output over it, which many older sets do not.
Checking the back panel for a square optical port is worth doing before assuming a set is too old for a soundbar, since optical predates ARC by a long way and appears on almost everything. Our roundup of Bluetooth transmitters for TV covers the wireless route.
What Goes Wrong With the Wrong Port
The most confusing symptom is that everything looks connected. The cable is seated, the picture works if a source is attached, and the soundbar shows an HDMI input.
No audio arrives, because the port has no return path to send it along.
CEC control frequently fails at the same time, since the control layer commonly runs over the same port, which makes the remote seem broken as well.
People then replace cables, reset devices, and check settings for an hour before discovering the port is the whole problem.
Checking the port first turns an hour of troubleshooting into a thirty-second fix, which is why it is worth ruling out before anything else.
When You Lose a Port to ARC
Dedicating one port to a soundbar reduces what is available for sources, and on a set with three ports that matters.
The usual answer is connecting sources to the soundbar’s HDMI inputs instead and passing video through to the television.
That works well on bars with enough inputs and adds a device to the video chain, which occasionally causes handshake problems with consoles.
The alternative is an HDMI switch on a non-ARC port, which keeps the video path simple. Our roundup of TV stands and media consoles covers accommodating the extra boxes.
Checking Before You Buy
Confirming what a television supports before ordering a soundbar avoids the most annoying discoveries.
Count the HDMI ports and note which carries ARC, since dedicating one changes what remains for sources.
Check whether it says ARC or eARC, because that determines whether a bar’s higher formats will ever be used.
Look for a digital optical output as well, which gives a fallback if ARC proves troublesome on an older set.
And check the soundbar’s side of the equation, since a bar with its own HDMI inputs can absorb the sources the television loses. Our roundup of soundbars for small living rooms covers what to look for.
eARC on the Same Port
A port labeled eARC handles standard ARC as well, so an older soundbar works on a newer television without trouble.
The reverse is not true. An eARC-capable soundbar on an ARC-only television falls back to standard ARC.
Both devices have to support eARC for the extra bandwidth to be used, which catches people who upgraded one end only.
On a compact one-piece bar the difference is mostly academic, since the hardware cannot reproduce the formats eARC exists to carry.
Soundbars With Passthrough
Bars with their own HDMI inputs change the wiring and are worth understanding before buying.
Sources connect to the soundbar rather than the television, and the bar passes video through on a single cable to the TV’s ARC port.
The advantage is that the bar receives audio directly from each source rather than via the television, which sidesteps any format limitation the TV imposes on what it passes back.
The disadvantage is another device in the video chain, which occasionally causes handshake trouble with consoles and streaming boxes, and means the bar has to be powered for the picture to work.
For a compact bar with one or two inputs the arrangement is usually more trouble than it saves, and it earns its place on larger systems. Our roundup of soundbars for dialogue clarity covers the hardware.
If the Labeled Port Still Does Not Work
Confirm the cable runs from the television’s ARC port to the soundbar’s HDMI out or TV-ARC port, not to one of its inputs.
Check CEC is enabled at both ends, since control and audio negotiation frequently travel together.
Set the television’s audio output to the external device rather than internal speakers, which is a separate setting from the port.
Power cycle both devices fully, unplugging rather than using standby, because the handshake runs at startup. Our note on turning off TV speakers covers the output setting.
HDMI ARC Port FAQ
Can you use any HDMI port for ARC?
No. Almost every television has one ARC-capable port, and it is labeled. Other ports are video inputs with no audio return path.
How do I find it?
Look for ARC or eARC printed beside the port number on the television’s panel. The manual states it faster than reading small text behind furniture.
Is it always HDMI 1?
No, and assuming so is a common mistake. Manufacturers differ, and side ports frequently do not carry ARC at all.
Does your TV have a specific port?
Yes, there is a specific HDMI port on mine for it, labeled and separate from the others.
What happens with the wrong port?
No audio, while everything looks correctly connected. CEC control often fails at the same time, so the remote seems broken too.
Which end does the cable go on the soundbar?
The bar’s HDMI out or TV-ARC port, not one of its inputs. Connecting to an input produces the same silence as using the wrong TV port.
Does an eARC port support standard ARC?
Yes, it is backward compatible. An eARC soundbar on an ARC-only television falls back to standard ARC instead.
Can I get the port back for another device?
Connect sources to the soundbar’s HDMI inputs and pass video through, or add an HDMI switch on a non-ARC port.
