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Clear-Com HB-704 Four-Channel Selectable Flush-Mount Headset Station
  • Clear-Com HB-704 Four-Channel Selectable Flush-Mount Headset Station
  • Clear-Com HB-704 Four-Channel Selectable Flush-Mount Headset Station
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Clear-Com HB-704 Four-Channel Selectable Flush-Mount Headset Station

Item #: CC-HB704   •   MFG #: HB-704


List Price:$445.00
Our Price:$400.50

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Availability: Direct Ship From Manufacturer
Item ships directly from the manufacturer. Normal delivery time is 2-7 business days and is subject to manufacturer availability. Need it sooner? Call 800-522-2025, or email Customer Service for expedited delivery options.
  • 2 - 7 Day Normal Delivery Time - Faster Shipping Options at Checkout or Call Us.



HB-704 Four-Channel Station
The HB-704 provides the same features as the HB-702,
but can access four intercom channels.
The HB-704 is a four-channel-selectable, full-duplex headsetstation, able to be mounted into a wall or other surface. These headset stations are ideal for installation in theatrical, performance, broadcast, and industrial facilities - wherever a multi-channel, full-duplex headset communications panel is desired. This unit mounts in a standard U.S. two-gang outlet box. The stations offer excellent speech intelligibility even in high noise environments. Microprocessor-controlled logic plus a set of internal and external controls allow the features of these stations to be tailored to the needs of the user. Electronic switching for the talk button, blue-color LED (on) or amber-color (off), permits momentary or latching operation. A Remote Mic Kill (RMK) signal on the intercom line will turn off the talk function if it is accidentally left on.

A red-color LED tracks the incoming call signal, so it can be used for visual cueing. An associated call button allows the user to place a call signal on the selected intercom line. The standard 4-pin XLR headset jack accommodates Clear-Com and compatible dynamic headsets. A sidetone level control adjusts the amount of the user's voice heard in the headset. An automatic limiter circuit adjusts and limits the microphone output to the intercom line. A four-position switch on the HB-704 allows the user to select from the attached intercom channels. Connections to the intercom lines are made via a screw-terminal block, using standard two-wire shielded mic cable.

The stations may be used with the optional TW (two channels on a single mic cable) daughter board. With the TW board, the stations become plug-in compatible with a Clear-Com TW system. The HB-704 is housed in a durable package with a steel front panel.

Clear-Com is a closed-circuit intercom system that consistently provides high-clarity communication in high-noise and low-noise environments. A basic system consists of a single- or multi-channel power supply or main station connected to various single- or multi-channel remote stations, such as beltpacks and loudspeaker stations. Clear-Com manufactures a wide variety of both portable and fixed-installation units. All are compatible with each other. Clear-Com intercom systems can also interface with other communication systems and devices.

Please Note! This item is just one component of a larger system. Please refer to the diagram for ideas and recommendations for your Clear-Com intercom system. Although the HB-702 is pictured in the diagram, the HB-704 can be easily substituted.

  • Specifications

    • Headset Microphone Input: Input Type : Dynamic, Input Impedance: >= 1KO, Mic Limiter Threshold: -2dBu ± 3dB, Mic Limiter Range: >= 15dB.
      Program Line Input: Input Impedance: >= 5KO.
      Headset Output: Load Impedance: >= 8O, Output Impedance: <= 25O, Output Limiter Threshold: +5dBu ± 3dB, Maximum Output Level before Distortion: >= 17dBu.
      Party-line Output: Off Noise: < -74dBu, Output Impedance: >10KO.
      Party-line Input: Crosstalk: < -60dB, Max level before Clipping: >= 12dBu.
      Frequency Response: Headset Mic - Party-line: 300 - 15KHz ± 3dB, Party-line - Headset Out: 300 - 15KHz ± 3dB.
      Max Distortion: Headset Mic - Party-line: <= 0.5%, Party-line - Headset Out: <= 0.2%.
      Noise: Headset Mic - Party-line: < -70dBu.
      Max Gain: Headset Mic - Party-line: 41dB ± 2dB, Party-line - Headset Out: >= 34dB.
      Power: Input Voltage Range: 20-30 VDC, Input Current (Idle): <= 50mA, Input Current (Max): <=100mA.
      Internal Adjustments and Connections: Intercom Line: Seven terminal connector, Option Switches: Two DIP switches, Option Board Jumper: Two sets of options jumpers.
      Front Panel Connectors: Headset: (1) XLR-4M.
      Front Panel Controls & Indicators: (1) Sidetone control, (1) Talk button, (1) Call button, (1) Channel select switch, (1) Volume control.
      Environmental: 32 - 122°F (0 - 50°C)
      Dimensions: 4.625 in. W x 4.5 in. H x 1.75 in. D, (117 mm x 114 mm x 44 mm).
      Weight: 0.46 lbs. (0.21 Kg).


by PowerReviews
CLEAR-COM COMMUNICATION SYSTEMClear-Com HB-704 Four-Channel Selectable Flush-Mount Headset Station

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

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Quality & Cost 2 thumbs up

By Kerry P

from Hudson , Ohio

About Me Experienced

Verified Reviewer


  • Clear Sound
  • Compact
  • Durable
  • Easy To Use


  • Color options

Best Uses

  • Remote Production Truck
  • Video Control Room

Comments about CLEAR-COM COMMUNICATION SYSTEM Clear-Com HB-704 Four-Channel Selectable Flush-Mount Headset Station:

Easy to interface with new digital Clear Com Equipment as well as older analog Clear Com systems

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