Clear-Com AB-120

Brand: Clear-Com


  • Description
  • Features
  • Specification
  • Downloads
  • On-Air Announcer Console
  • Talent talk-back circuit automatically mutes mic output to air
  • Silent mic mute button for cough and mic on/off functions
  • Easily adapts for use with any mic or headset
  • Binaural headset output allows talent to hear stereo program, IFB and/or intercom
  • IFB input accepts either unbalanced program or powered IFB
  • Powered by the intercom line, IFB line or external DC source
Ultimate Tool for Announcers and Commentators

Integrates all the inputs, outputs and controls necessary at the announce position, including intercom talkback, IFB and a silent mic mute button for noise-free cough and mic on/off switching.

“No Compromise” Audio

 A high-output stereo headphone amplifier guarantees talent can always hear both program audio cues from the control room, even in the loudest environments.

On-Air Broadcast Quality

A Jensen™ output transformer provides a properly balanced signal and reduces the possibility of ground loops, buzz or hum.

Headset Microphone Input

Input Type: Dynamic, Electret

Input Impedance: 1K Ohms

Max Input Level: -60 dBu to -40 dBu switchable

Headset Output

Load Impedance: >= 4 Ohms

Output Impedance: 47 Ohms

Output Limiter Threshold: -4dBu, + 3dB

Max Output Level Before Distortion: -4 dBu

Partyline Output

Off Noise: <-80 dBu

Output Impedance: >10K Ohms

Maximum Output: -4 dBu

Partyline Input

Maximum Level Before Clipping: +3 dBu

Sidetone Null Capability: >25 dB

Frequency Response

Dynamic Mic – Partyline: 40Hz – 22KHz, + 3 dB

Dynamic Mic – Line Out: 20Hz – 22KHz, + 3 dB

Dynamic Mic – 4-Wire Out: 100Hz – 22KHz, + 3 dB

IFB Input – Headset Out: 100Hz – 22KHz, + 3 dB

Partyline – Headset Out: 150Hz – 22KHz, + 3 dB

Max Distortion

Dynamic Mic – Partyline: <0.1%

Dynamic Mic – Line Out: <0.05%

IFB Input – Headset Out: <0.5%

Partyline – Headset Out: <0.1%


Dynamic Mic – Partyline: <-75 dBu

Dynamic Mic – Line Out: <-85 dBu

IFB Input – Headset Out: <-65 dBu

Partyline – Headset Out: <-65 dBu

Max Gain

Dynamic Mic – Partyline: 41 dB + 3 dB

Dynamic Mic – Hot Mic Out: 40 dB + 3 dB

IFB Input – Headset Out: 40 dB/22 dB (switchable) + 3 dB

Partyline – Headset Out: 34 dB + 3 dB


Intercom/IFB Voltage: 25 – 30 VDC

Current: 100mA idle, 120mA max

DC Adapter: 100 – 240V Voltage: 30V @ 0.5A


32o – 122o F (0o – 50o C)


3 x 6 x 8 in (HxWxD)

(76 x 152 x 203 mm)


2.0 lbs (0.9 kg)

  • Download A Comprehensive Guide to CC Analog Digital Partyline Systems (6.9 MB pdf)


On 31 October 2019, the four leading broadcast and production houses Gearhouse Broadcast, Hyperactive Broadcast, Input Media and Chief Entertainment owned by Gravity Media Group started trading under the brand name of ‘Gravity Media’. All Gravity Media companies around the world are making this transition and will now go to market as a single brand with a bold new look and purpose.

under 1 roof2

Gravity Media is a leading global provider of complex live broadcast facilities and production services to content owners, creators and distributors. We use the collective pull of our people and resources to capture, craft and create world-class content that inspires and excites.

We are driven by client service excellence, and we never stand still. We’re always looking and listening, keeping up with the latest broadcast innovations – or pioneering them. Above all, we channel our energy into maintaining our reputation for flawless execution, deep technical expertise, and efficient delivery.

Gravity Media is a brand-new company with a 30-year pedigree, a force to be reckoned with formed by the coming together of Gearhouse Broadcast, HyperActive Broadcast, Input Media and Chief Entertainment. Our 500 people serve clients across the sport, media, news and entertainment industries from bases in the UK, Australia, USA, France, Germany and Qatar.

At the centre of Gravity Media lie three broad categories of expertise: media services & facilitiesproduction & content; and equipment rental & sales.

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