Dual In-Line

Price: £189.95 (£158.29 net)
Dual In-line amplified DSP noise cancelling in-line module.

Remove noise and hear clearly with this fully featured DSP noise cancelling unit

Flexible DSP noise cancelling unit with high-performance audio processing 
The bhi Dual In-Line amplified DSP noise cancelling module is made from tough impact resistant black ABS plastic.  The module uses a powerful high-performance audio processing system and unique DSP noise cancelling technology to distinguish speech signals from noise and interference.  This results in clear intelligible speech under most conditions.  Your listening experience will be greatly improved with the processed speech sounding much clearer and more intelligible without all the noise, especially when trying to listen to weak signals.

Easy to use controls
The Dual In-Line is easy to use with simple rotary controls and switches.  There is an input level control with LED's and separate output level controls for adjusting the line level and speaker output levels. You can listen with headphones, a passive mono speaker or powered speakers.  Operation of the noise cancelling is straightforward with filter on/off switch and an 8-position rotary switch to set the of noise filter level.  There is also a switch which allows you to separate or combine the input signals.  

Choice of connection options
The Dual In-Line has accepts 3.5mm mono or stereo connections and there are three different output sockets; 7 Watt mono speaker output, stereo line level output and a 3.5mm stereo headphone output.  This flexibility enables you to connect up to two mono inputs or one stereo input, and up to three separate outputs. The unit is supplied with 1 x ALD-007 stereo plug to plug lead, 1 x ALD-001 3.5mm mono plug to plug lead, user manual, rubber feet and a fused DC powder lead.  You may want to consider a separate mains plug-in 12V DC power supply like the worldwide PSU-12-2A-WW.

Suitable for use with all radios, receivers and SDR
The Dual In-Line module caters for both mono/stereo speaker level and stereo line level audio input signals.  Powered speakers can be connected to the stereo “Line Out” socket, and a passive speaker can be connected to the 7W amplified mono “Audio Out” socket.  You can listen with headphones and a mono speaker at the same time, making the unit ideal for DXing, club stations, special event stations and field day events.  The Dual In-Line module is a direct replacement for the obsolete bhi NEIM1031MKII but with the latest bhi DSP noise cancelling technology and more features.

Boost your audio
Why not boost your receive audio even further and use one of our EQ20 10W parametric equalizer units with your Dual In-Line unit.  Simply connect the "Line Out" signal to the the input of the EQ20 and connect your passive speaker or headphones to the EQ20 output.  You will be able to fine tune your audio to suit your own hearing.  This is especially useful if you suffer with hearing loss.

Read the excellent review in QRPer.com by Thoma Witherspoon K4SWL  


  • Powerful high-performance audio processing system
  • Latest bhi dual channel DSP noise cancelling technology
  • Ultra low latency of 32mS
  • Improved audio quality - processed speech much clearer and intelligible
  • Use with mono, stereo or two separate mono 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
  • Rotary controls and switches for quick and easy operation
  • Use with headphones, a passive speaker and powered speakers
  • Dimensions: L165mm x W78mm x D50mm
  • Unit made from tough impact resistant black ABS plastic


Operating voltage: 10 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
Ultra low latency of 38mS
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
Noise suppression: 8 to 40dB
Tone suppression: Up to 65dB
3 positions - Off/On/DSP Noise Cancelling On
Audio Out Level (Mono speaker and headphones - 3.5mm Mono connection only )
Line Out Level
Indicators: Power ON
Noise Cancellation ON
Channel 1 Overload
Channel 2 Overload

Dimensions: L165mm x W78mm x D50mm, weight 0.38Kg
Unit made from tough impact resistant black ABS plastic