ParaPro EQ20-DSP

Price: £339.95 (£283.29 net)

Introducing the bhi ParaPro EQ20-DSP, a compact 20W audio enhancer with parametric equalisation and bhi's DSP noise cancelling. Ideal for those with hearing loss, it allows precise tuning of audio frequencies to suit individual preferences. The unit features a 10W per channel audio amplifier, utilizing powerful DSP noise cancelling technology for clear speech even in challenging conditions. Connect mono or stereo inputs, and choose outputs for passive speakers. Housed in a compact ABS case, it includes user-friendly controls and benefits from parametric equalisation's flexibility for personalized audio. This audio solution is a versatile and efficient addition to your setup.



ParaPro EQ20-DSP noise cancelling unit with 20W audio and parametric equalisation

Greatly improved audio for those with hearing loss

The bhi ParaPro EQ20-DSP 20 watt audio unit comes with parametric equalisation and bhi's DSP noise cancelling technology.  The parametric equalisation allows you to fine-tune the sound of your audio and boost or cut the frequencies to suit your own hearing and conditions. 

Latest bhi DSP noise cancelling technology
The EQ20-DSP unit features a 10W per channel audio amplifier with parametric equalisation.  The EQ20-DSP utilises a powerful high-performance audio processing system and the unique DSP noise cancelling algorithm is able to distinguish speech from the noise across the whole audio bandwidth. This result is clear intelligible speech under most conditions making your listening experience much more enjoyable..

Mono or stereo inputs
You can connect one or two mono inputs to the CH1 and CH2 input sockets, or a single stereo signal from an SDR radio, shortwave receiver, MP3 player etc, via the 3.5mm stereo input socket.

Choice of outputs and connections
Connect one or two passive speakers to the left and right “Speaker Outputs” using the 4mm banana plugs or phono to 3.5mm mono adapters supplied. Use the “Source Select” button on the front panel to select the desired audio.  

Easy to use controls
The EQ20-DSP is housed in a quality compact ABS case. There are controls for Power/Volume along with two parametric equaliser channels labelled Bass and Treble, with the Bass centre frequency being adjustable from 100Hz to1kHz and Treble covering 1kHz to 10kHz. Used together these controls provide two bands of ±10dB adjustment from 100Hz through to10kHz. bhi DSP noise cancelling. The bhi noise filter control allows you to adjust the filter level from off (DSP bypassed) to 40dB of noise cancellation.  

Benefits of Parametric Equalisation
Unlike standard tone control, graphic equalisation and preset EQ settings a parametric equaliser allows you to select the precise frequency you want to adjust.  This enables you to boost or cut the selected frequency giving you much greater flexibility and accuracy in setting the audio to suit your own hearing.  This is especially beneficial to people with hearing loss.


  • Parametric equalisation on all units for precise audio adjustment
  • 10W audio per channel
  • Class-D type audio amplifier for power efficiency and eliminate the need for bulky heatsinking
  • Ultra low latency of 38mS
  • bhi DSP noise cancelling on EQ20-DSP & EQ20B-DSP versions
  • Two separate 3.5mm mono audio inputs or a single stereo audio input
  • Simple control of all functions
  • Greatly benefits those with hearing loss
  • 4mm banana plug or RCA phono plug audio output connections
  • Signal input overload feature
  • Use with 4 or 8 ohm passive speakers
  • 3.5mm stereo headphone output (Class AB)
  • 12V DC operation (2A)
  • User manual and full accessory kit supplied
  • Dims: 145mm (W) x 75mm (H) X 100mm (D)
  • Use with powered speaker or an amplifier output stage with LLC1 accessory
  • Bluetooth connectivity on input side withEQ20B-DSP version~

    Video showing a live demo of the EQ20-DSP and other products at Martin Lynch and Sons shop


Note: You can connect directly to Bluetooth enabled devices from the EQ20-DSP output.  If you want to connect to a Bluetooth enabled device on the output, like Bluetooth headphones, speakers or hearing aids then you could use a suitable Bluetooth transmitter available from a number of outlets including Amazon.


“Easy-to-use device that improves the audio clarity of amateur signals” EQ20B-DSP QST Dec 2019 review

"I have a Dual In-line module which is very good for eliminating noise.  The EQ20B-DSP is first class and really does improve the audio and noise cancelling signals can be fine tuned.  I am now hearing all calls much clearer.  Heavy accents are no longer a problem"  EQ20B-DSP review by Peter Joyner M0WPJ

"Using the new EQ20-DSP noise cancelling and parametric equaliser for a few days I have found this to be an excellent purchase. I am now able to receive stations down in my local noise level which was not possible before due to high solar panel and other local electronic noise. Using the fixed line level output from my ICOM IC7600 and IC9100 transceivers thus bypassing the internal audio stages gives the best results.( 4.7K 300mV rms )this source is just below the clipping level, the audio having little or no distortion with a frequency range to suit me. Many thanks to Kellie and Graham for the very fast and efficient service." Best Wishes David G2FT ex G3MWV.