A-H4 1 Source, 4 Zone Surface Mount Hub

Category: Hubs

The A-H4 hub is the heart of a single-source A-BUS music system. It sends the output of your audio source to A-BUS Amplified Keypads or Amplified Volume Controls in up to four rooms. If you want music in more rooms, multiple A-H4 hubs can link together to provide more A-BUS zones.



With a receiver or preamplifier connected to the A-H4, you can select any of your music sources to enjoy throughout the house. Or you can connect just a single audio source, such as a computer or a CD changer.

For added convenience, an optional Status feature indicates on your keypads when the receiver is on and turns all your keypads off when it’s turned off.

The A-H4 is designed for surface mounting, such as on a shelf or in a rack with your source equipment.


  • Works with Russound A-K4 Amplified Keypads
  • Provides source status indication on your keypads
  • Mounts unobtrusively near your audio equipment, on a shelf or in a rack or cabinet
  • Includes a source loop output and IR emitter jacks for four source components
  • Links to other hubs for more zones
  • Shipping Dimensions: 3.4" (W) x 6.8" (H) x 2.0" (D) (8.7 x 17.1 x 5.1 cm)
  • Shipping Weight: 0.9 lbs (0.4 kg)
  • Audio Input Connectors: Line-level stereo RCA jacks
  • Control Link Input & Output: RJ-45 jacks, T568A standard
  • IR Emitter Connectors: (4) 1/8" (3.5 mm) TS jacks, tip positive
  • Keypad Outputs: (4) RJ-45 jacks, T568A standard
  • Power Connector: 2.5 mm jack, tip positive
  • Power Requirement(s): 24 VDC 2.5 A (use Russound A-PS power supply)
  • Status Power (optional): 12 VDC 100 mA
  • Status Power Connector: 2.5 mm jack, tip positive


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A-H4 Product Manual: A-H4 Manual Rev5.pdf


A-H4: A-H4.jpg