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About the Bose® FreeSpace® IZA 2120-HZ


The hub for a multi-zone Bose commercial sound system

Drive your Bose commercial speaker system with an amplifier that's made for the job. The FreeSpace IZA 2120-HZ puts out 120 watts per channel, and you can send output to two zones. Auxiliary output lets you connect standalone Bose power amps to drive speakers in additional zones.


It also features multiple input options so you can connect plenty of sources. Opti-voice technology helps balance volume levels when you switch from music to paging, so important announcements can be heard clearly.

Pre-programmed EQ for select Bose speakers

The IZA 2120-HZ uses Class-D amplification for efficient operation and clean sound. And there's built-in equalization for optimizing sound characteristics with specific Bose speaker models, including the FreeSpace 3 subwoofer, DS 16F, DS 16SE, DS 40F, DS 40SE, DS 100F and DS 100SE speakers.

Part of a customizable Bose sound solution

The Bose Professional family of products offers speakers, amplifiers, processors and accessories that are designed to work together.  


The lineup includes:

  • A wide array of FreeSpace® speakers, subwoofers, and zone amplifiers
  • EdgeMax™ in-ceiling speakers for mounting in high corners and near walls
  • rugged, adaptable PowerShare amplifiers
  • clear, reliable Panaray full-range driver arrays
  • versatile ControlSpace signal processors
  • robust MB subwoofers


Our system designers can help you choose the right mix of products to customize a system that sounds amazing in your unique space.

Product highlights:

  • 2 x 120-watt commercial amplifier for distributed audio systems
  • built-in custom EQ for Bose FreeSpace 3 subwoofer, DS 16, DS 40, and DS 100 loudspeakers
  • Opti-voice technology transitions smoothly between music and paging
  • A/B input selection switch
  • individual input gain control knobs
  • connect optional Bose FreeSpace ZA amplifiers to drive additional zones
  • front-panel treble and bass controls for two zones


  • one unbalanced microphone input with 4-pin Phoenix-style Euroblock connector
  • one front-panel unbalanced line input with 1/8" TRS connector
  • dual unbalanced line inputs with stereo RCA connectors
  • dual five-pin Phoenix-style Euroblock inputs


    • dual 4-pin Phoenix-style Euroblocks for connecting remote controls
    • dual 2-pin Phoenix-style touch-proof Euroblocks for connecting to speakers
    • one unbalanced stereo RCA auxiliary output for connecting outboard zone amplifiers

Dimensions and Warranty:

  • 19"W x 1-3/4"H x 12-13/16"D
  • weight: 9 lbs.


What's in the box:

  • Bose® FreeSpace® IZA 2120-HZ owner's manual
  • Integrated zone amplifier
  • 79" Power cord (IEC 3-pin)
  • Two 5-pin Euroblock (Phoenix) connectors
  • Three 4-pin Euroblock connectors
  • Three 2-pin Euroblock connectors
  • Four round plastic feet
  • Four locking-pins for feet
  • Owner's manual
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