Your cart
Contact us
Close contact box
Connect ID #
358 920 931 4
Connect ID #
358 920 931 4
All finished with your chat session?

We’ll email you a transcript of this conversation for your records.

All of our representatives are
currently chatting with other customers.

Please enter your name.  
Please enter a valid email address. Why is this required?

For Tech Support, call 1-888-292-2575

Thank you, !
Our conversation will be emailed to
Chat Advisor Image

Your Advisor,

More about me
Please enter a question  
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  

Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

Russound A-H4

1-source, 4-zone A-BUS distribution hub

Item # 543AH4

California customers:
Please click here for your Proposition 65 warning.

Item # 543AH4

Ships free today

In stock

Other options

Articles, videos & DIY info

Decades of expertise at your fingertips.

60-day returns

If you don't love it, send it back.

Since 1974

Years of experience making people happy.

About the Russound A-H4

The A-H4 is a four-zone expansion hub for Russound A-BUS systems. With the A-H4 connected to a receiver or preamp, you can select any of your audio sources and send music to up to four rooms. You can also connect the A-H4 to an additional A-BUS hub, expanding your system to more locations around your home. The A-H4 works with Russound amplified volume controls and is compatible with Russound IR (infrared) emitters. It's designed for surface-mounting, such as on a shelf or in your equipment rack.

Product highlights:

  • 1-source, 4-zone surface-mount A-BUS distribution hub
  • compatible with A-BUS keypads
  • gold-plated left and right RCA inputs and outputs
  • four RJ-45 jacks for connecting keypads using CAT-5 cable
  • uses A-PS 4-amp power supply (not included)
  • four IR (infrared) outputs for connecting optional IR flashers
  • recommended accessories for installation: in-wall speaker wire and CAT-5 cable
  • 6-1/2"W x 3"H x 1-1/2"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # 2000-115851

What's in the box:

  • A-H4 IR Surface Mount Audio Hub
  • Instruction Manual

Customer reviews

Loading reviews...

Russound A-H4 reviews

Average review:

8 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee review (What's this?)



Crutchfield response

<< >>

More details on the Russound A-H4

Mark G.

Product Research


A-BUS System Overview: Instead of multi-channel amplifiers, speaker selector boxes, autoformers, impedance-matching equipment and long runs of expensive speaker wire, A-BUS audio distribution includes amplified in-wall volume controls, and wiring installation time is significantly reduced as only a single 8-connector CAT-5 wire (not included) is run to each location. Simply add A-BUS to your existing stereo/home theater system with the A-H4 4-Zone Hub and the A-BUS A-KP2 Amplified Controls (not included) will provide independent volume and source control to each room where an A-BUS module is installed. Each control contains a stereo amplifier rated to deliver 7.5 watts RMS per channel; the AC current to power each amplifier is delivered via the CAT-5 cable. The system also includes IR remote sensing and retransmission to let you control your components from any of the volume control locations.

A-BUS Distribution Hub: The A-H4 is the system's primary interface with your existing system; all components of the A-BUS system must be wired to this component. Includes stereo RCA inputs (and outputs, to route the signal back to your receiver or onto a second A-H4 module), jacks for IR emitters, and RJ45 jacks for connecting four CAT-5 cables.

Status Feature: The Status feature provides two functions - Visually confirms when the source component is on / When the source component is turned off, all Amplified Modules will also turn off. The Status feature requires that the source component has a switched AC outlet. To enable the Status feature:

  • Move the status jumper on all Amplified Modules to the "Enabled" position
  • Move the status switch on the Hub to "STATUS" position
  • Using an optional Russound Model 846C 120V/12VDC or comparable adapter, connect the coaxial plug end to the STATUS input on the Hub, and plug the adapter into a switched AC outlet on the source component.
Note: When the source is on and supplying status voltage to the Hub, the Amplified Module's LED indicator will illuminate green. When the source is turned off, all Amplified Modules that are on will also turn off (the optional A-VC2 will mute)

Inputs and Outputs:

  • 4 RJ45 CAT-5 jacks: Communicate directly with the A-KP2 amplified keypads (not included). CAT-5 cable is recommended for cable runs of not more than 250 feet. You will need to terminate your CAT-5 cable with RJ45 plugs.
  • DC Power input: Accepts connection from the A-PS 4-amp power supply (not included). There is a red LED that illuminates when power is connected.
  • DC Status input: If you intend to use the System Status feature of the A-BUS system, a Russound Model 846C Power Supply (not included) can be connected to the status input on the A-H4. The power supply should then be plugged into a switched AC receptacle, usually on the back of the audio receiver being used. There is a green LED that illuminates when a System Status Power Supply is connected and power is on.
  • Link In/Link Out: Dual RJ45 jacks used to connect the A-H4 Hub to additional A-H4s or to other A-BUS single-source Hubs or an A-BUS-Ready stereo receiver in order to increase the number of zones in a system. The Link connects the Common IR, Status, and the audio source signal (note: each Hub requires its own A-PS power supply!). The Link Out can also be used to directly connect just one additional Amplified Module.
  • 4 Common IR Outputs: Connect the 1/8" plug from the 1584.1 or 845.1 Micro-Emitter (not included) to one of these jacks to send the IR signal to your source components. If you use four 1584.1 Micro-Emitters (not included), you can control up to 8 IR-controlled devices. There is a red LED to confirm when IR commands are received.
  • Audio In: Left & Right gold-plated RCA jacks accept a line-level signal from your source component.
  • Audio Out: Left & Right gold-plated RCA jacks. This buffered audio output can be used to connect to an additional A-H4, or to an amplifier or processor.


  • Power Supply: A-PS (24VDC/4A)
  • Status Power: 12VDC/100mA
  • Keypad Connection: RJ-45 T568A Standard
  • Link Connection: RJ-45 T568A Standard
  • Emitter Connections: 1/8" Male. Tip (+), sleeve (-)
  • Dimensions: 6.5" wide x 3" high x 1.5" deep (including all protrusions)

Loading accessories...

Customer Q&A

4 questions already asked

Is this compatible with Channel Vision as a replacement for AB-404 and AB-202?
[ John  Aug 30, 2022 ]
1 answer
It looks tempting John, but this Russound A-H4 is not compatible sadly. The ABUS setup uses amplified keypads, where the AB-202 actually has direct connection points for any receiver. The Russound is only in play with A-BUS specific Russound systems. If you are having issues with your in home setup, give us a call at 1-800-324-9695 and an Advisor can talk about the issues and go over some possible solutions!
[ Bo  Aug 31, 2022 ]  Staff
I have this audio hub with speakers in the ceilings. Sound only comes out from one speaker. All the connections are secure, etc. Can the hub go bad? We purchased this home 5 years ago and the system was currently installed by previous owner.
[ Aurelio  Apr 23, 2022 ]
3 answers
Yes the hub can go bad, had a similar experience, moved into our house which had this system installed, all speakers were active but a bad hum when the system was powered. Switching to a new unit solved the problem after I checked all individual connections and power supply.
[ Rak  Apr 26, 2022 ]
I'm just a homeowner with a Resound system. I had an older model of a hub and that is exactly what my system was doing. I called Crutchfield and decided to give the new hub a shot. Replaced the older hub with this one and it solved all the issues.
[ JOHN  Apr 25, 2022 ]
My hub went bad. Only got a hum out of the speakers. Have four amplified keypads so I figured it had to be the hub and it was.
[ ANTHONY  Apr 25, 2022 ]
Do you repair CA4 Multi-zone Controller? Does not power up.
[ Dennis  May 20, 2021 ]
1 answer
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Jun 04, 2021 ]  Staff
I have a home with 7 volume controls and a Russound A-H4 1-source, 4-zone A-BUS distribution hub controls can I add 1 more to my system to control the other 3?
[ Jimmy  Dec 03, 2020 ]
2 answers
Jimmy, Hi Sorry , I don't know.
[ patrick  Dec 03, 2020 ]
Yes you can, on the lower right corner there are input and output ports to connect additional units.
[ Rak  Dec 03, 2020 ]

Loading articles...

Compare the sound