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Dual In-Line

Net Price (ex VAT) £ 165.83
Dual In-Line
0.380 kg


A-Dual In-Line



Multi-task your audio with this dual channel DSP noise cancelling unit!

Flexible DSP noise cancelling module with superb audio quality
The bhi Dual In-Line module incorporates the latest bhi dual channel DSP noise cancelling technology.  Your listening experience is improved with processed speech being 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 cancelling 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 cancelling 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
Connections: 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
Controls: 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
Indicators: Power ON
Noise Cancellation ON
Channel 1 Overload
Channel 2 Overload


"Having to wear hearing aids I find the noise reduction excellent. I can now take away noise and read stations that without the Dual In-Line I would not be able to communicate with. Having used the NEIM1031 for many years the improvement is very good. The build is also improved. Very pleased with my Dual In-Line"

"Reduced background noise.  Super product, many thanks" Mr T Hayman

"Unbelievable! Noise gone!  Other products don't compare.  Your new Dual In-Line allows me to monitor 2 sep-arate frequencies with my reciver as it has 2 vfo's, comms from each speaker are c;ear, as if my volume is down. Perfection.  Graham has gone out of his way to assist me, even sending replacement parts on older products, N/C! thank you, Ron"  Ron Monfeli

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