Testimonials

Listen to what our customers and reviewers have said about how our noise cancelling products removed noise and interference and improved their listening experience:

ParaPro range

"I can hear better – Weak stations come in much clearer. I have diminished hearing and the unit makes listening much easier. I am very impressed. I am so impressed with the "Kit" Everything was included! I didn't have to order extra parts. Brilliant. - EQ20-DSP review by Mark Habberfield KB9OPW

"Fantastic piece of equipment. The removal of unwanted noise is incredible. Really impressed with your products and service (2nd to none). I wear hearing aids and have problems in both ears. This unit is a necessity." - EQ20-DSP review by Rex Davis 2W0HZC

“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." - EQ20-DSP review by David G2FT ex G3MWV.

Read the latest review of the EQ20-DSP from Ham Radio Ireland

Noise cancelling speakers

"Hi Graham. I have now used the NES10-2 speaker for three weeks now. It has enabled me to once again use the 80 metre band for the first time in years. Even being hard of hearing, I am hearing stations that would have been impossible for my ears to resolve previously. I cannot thank you enough for such a useful product which has re- opened the hobby to me. Local noise has got worse over the years but the speaker is a dream product and all but wipes it out." – NES10-2 MK4 review by Stephen Slater

"I have used the unit mobile and in the shack and would recommend it to any amateur or swl. Well done bhi. A QUALITY BRITISH PRODUCT THAT SPEAKS FOR ITSELF"

"I have not experimented, so far with the different settings and am using the equipment as delivered. Noise reduction is marked making operating much more pleasant. With a portable rig which which has a very small speaker audio is much improved."

"Very often the noise levels on the SW HF bands shows S5 on the radio’s meter making life very difficult listening to voices, even at S8 & 9, but I am very happy that the NES10-2 is able to cut down the noise and interference to such a level that a voice is almost like a phone call. There is some semblance of an echo in the background, but is not too disturbing. I am using the unit on step 6, and have heard Japan and Australia amateurs very clearly indeed with very little background noise at all. Well bone bhi, and thank you for a product which I will recommend."

"I just bought one of your Noise Eliminating Speakers NES 10-2 from the York Rally and I thought I must write straight away to tell you how delighted I am. On 40, 20 & 15 mtrs I have continuous 57/8 noise and although I can manage with a struggle with weak stations I find it hard going. I connected the NES 10-2 to my Icom 706 when I arrived home and the improvement, with the level 3 setting that you advise, is truly remarkable. I am now experimenting with the other levels but to be quite honest I think I will leave it on level three as this is vast improvement compared with no speaker connected." - NES10-2 MK4 review

"I own a JRC NRD545 DSP receiver which as always produced audio that I found really harsh to listen to on single sideband. On Saturday at the GQRP convention I purchased NES10-2 speaker on a recommendation from a friend. I have owned and still own many audio filters of one sort or another but your product was a revelation. The NES10-2 does exactly what it says on the tin and I can now enjoy listening to my receiver." – NES10-2 MK4 review by Ken

“On 40, 20, & 15 mtrs, I had constant 57/8 noise, I connected the NES10-2 to my rig and the improvement was truly remarkable” – NES10-2 MK4 review by Terry G0VTI

“An excellent easy-to-use plug-in accessory that can significantly improve your receivers audio performance and readability” – NES10-2 MK4 review by RadCom

“I have sometimes been a little sceptical about DSP noise cancellation, but this really does reduce noise very effectively without any annoying and distracting DSP artefacts...” - DESKTOP review by RadCom

“Transformed the output sound of my TS-930S providing as clear audio to match current rigs.” - DESKTOP review by Geoff Blore

“The DESKTOP speaker is great, audio is crisp and clear, brilliant!” – DESKTOP review by Mr. B Hiley

"Thank You Graham for your reply. I have in fact bought the DESKTOP model since I spoke to you from Martyn Lynch. It arrived today and I set it up to try it out. I am plagued by noise at my qth, so much so that I have seriously considered closing down the station. I cannot praise your speaker enough. It seems rather strange listening to speech in a way I have never heard it before. On top band we have a net on a Sunday morning. To be able to join in I have to go mobile to a spot away from the village. With winter on its way, I am going to enjoy the interference free contacts without having to go out. At 86yrs this is quite something. Again, thank you for making radio a pleasure again". – DESKTOP review by Peter 2E0DYM

“I just wanted to thank you for your amazing Desktop (10W) DSP Speaker. I bought it from you @ the Kempton Park Rally - I tried it for the 1st time this Sunday on a noisy 40m band and was gobsmacked! Your unit made a fine job eliminating the crud picked up by the radio. I now consider your noise eliminating speaker an essential bit of kit in my ham shack! Thank you very very much.” - DESKTOP review by John G1WVN

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In-Line Modules

"Highly impressed, worth the cost, very effective at removing noise but leaving signals, excellent performance, surpassed my expectations" - Dual In-Line review by Dan AB5VJ

"Reduced noise and made more clear and more pleasant" - Dual In-Line review by Steve Gibbs, using it for scanner and HF listening

"I bought the Dual Inline from DX, and I can now hear all the call signs clearly the first time, despite the thunder crashes on the air. I usually have the filter level at 4, occasionally 5, and never need it higher even in bad conditions. It's working great for me. Thank you!" - Dual In-Line review by Paul AE5JU

"Noticeable increase in clarity in what is sadly a noisy reception area. Great job at reducing QRM" - Compact In-Line review by Mark

"Unit very effective" Compact In-Line review by Bill GM8RBR

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Noise cancelling intercoms

“The intercom system provided by BHI for our Radiation Therapy system enables us to have clear and effective two way communication during patient treatment sessions. The system is discreet, robust and able to cope with the background noise from the machines we use. The service we have received since implementing the first system has continued to be excellent.” NEIS-RM25 review by Bupa Cromwell Hospital London

Other reviews

"Myself and several members of the Ears club(Echelford) put the unit through its paces and are all very very impressed with its performance. Particularly those who have hearing problems and wear a hearing aid. I can now pick out sigs out of the noise I could not before especially on 1.8MHz. CW is most clarified. Given the amount of electronic ‘hash’ on the bands it makes listening much less stressful and also lets the audio through. Efficient reduction of static on the lower amateur bands. Reduction of stress factor on trying to sort out the signal from the white noise. Increases the listening pleasure of net involvement. Suppresses to some extent reception of spurious sideband intrusion from over modulation of adjacent SSB transmissions. Clarifies to some extent ‘wooly’ speech defect on modulation of callers transmission. And that’s after only 15 minutes of use! Well done. I know its already being praised but I add my thanks for a wonderful bit of kit which has been the best buy I've made in radio in many years. To kill off all that tiring background noise was something I thought impossible, for someone already struggling with their hearing like me its a dream......"

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