bhi Dual In-Line

bhi Dual In-Line SKU: ZBH-A-DUAL-IN-LINE


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bhi Dual In-Line Mono/Stereo DSP Noise Cancelling Module

Multi-task your audio with this stereo/dual channel noise canceling unit!

Flexible DSP noise-canceling module with superb audio quality
The bhi Dual In-Line module incorporates the latest bhi dual channel DSP noise-canceling technology.  Your listening experience is improved with processed speech is clearer and more intelligible.  Very useful when trying to listen to weak signals.

Choice of connection options
The Dual In-Line module is a direct replacement for the obsolete bhi NEIM1031MKII but with improved DSP noise canceling and more features.  It has the ability to accept 3.5mm mono or stereo connections.  There are three output sockets; 7 Watt mono speaker output, stereo line level and a 3.5mm stereo headphone output.  This enables you to connect up to two mono radio inputs or one stereo input.

Suitable for use with all radios, receivers and SDR
The Dual In-Line module caters for both speaker level and line audio input signals.  Powered speakers can be connected to the stereo “Line Out” socket and a passive speaker can be connected to the mono “Audio Out” socket.  You can listen with headphones and a mono speaker at the same time which makes the unit ideal for DXing, club stations, training, special event stations and field day events.

Easy to use controls
Operation of the Dual In-Line is simple.  There is an input level control with LEDs and separate output level controls for adjusting the line and speaker output levels. This allows you to feed the headphones/speakers whilst the line-out signal could be connected to a recording device, external decoder or amplified stereo speakers.  Operation of the noise canceling is straightforward with an on/off switch and an 8-position rotary switch to set the of noise filter level.  There is a switch which allows you to separate or combine the input signals.

  • Latest bhi dual channel DSP noise cancelling technology
  • Improved audio quality - processed speech much clearer and intelligble
  • Use with mono, stereo or two separate channels
  • 8 noise filter levels - 8 to 40dB noise cancellation
  • Great flexibilty - accepts speaker level and line level audio
  • Separate 7 watt mono audio and stereo headphone amplifiers
  • Easy to use controls for all functions

Operating voltage:

0 to 16v d.c. (800mA nom, 2.5A max)
Audio Input: Input – Stereo (Audio 1 – Plug Tip, Audio 2 – Plug Ring)
8 Ohms at 2Watts
10K Ohm at 600mV p-p

Audio Outputs:

Headphones/small speakers – 0.5 + 0.5 Watts into 8 Ohms
Speaker – Greater than 6 Watts into 8 Ohms
Line - Stereo 600 Ohms at up to 0dBV


Audio Inputs - 3.5mm Stereo Jack Socket
Line and Headphone Outputs – 3.5mm Stereo Jack socket
Mono Speaker output – 3.5mm Mono Jack socket
Power 2.1mm Coaxial Power Jack centre Pin = +Ve


Audio Input Level
Combine/Separate signal switch
DSP Filter Levels 1 – 8 (8 to 40dB)
3 positions - Off/On/DSP Noise Cancelling On
Audio Out Level (Mono speaker and headphones - 3.5mm Mono connections only )
Line Out Level


Power ON
Noise Cancellation ON
Channel 1 Overload
Channel 2 Overload

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