JrF -  supplying hand built, specialist microphones to 1000's of other artists, listeners, sound designers, composers.

"the microphones, & (your own) work including projects highlighting the work of other artists, have had a significant influence on contemporary field recording, listening & Sound Art practices" (BL)

"If you've seen a film produced in the past decade or so, watched a nature documentary, attended a Sound Art exhibition, a workshop on located sound, watched or listened to experimental music, played a game with good sound design, there's a good chance you've been hearing sounds recorded / transmitted / performed via JrF contact microphones, hydrophones or electromagnetic coils" (BBC)

I tend not to advertise as such, preferring for their reputation to speak.I simply work with these mics myself, along with my daughter, Pheobe riley Law, finding ways to make sure they give excellent results at a fair price. It's about community.

Earthsounds (Apple TV) & Secret Sounds of Nature with David. Attenborough (Sky+) are two new series (2024) that feature JrF microphones extensively & for Earthsounds myself & Pheobe made many of the soil & plant recordings.


‘The Green Planet’, the latest David Attenborough series (2023) features extensive use of JrF c-series contact mics, JrF adapted plant microphones, d-series hydrophones and some of the techniques I have developed for listening to the actual sound of plants (trees, grasses, flowers, funghi, aquatic species etc).

JrF microphones have been used in most of the Attenborough series over the past decade or so, along with certain approaches to recording that I have shared with some of the sound recordists involved. 

and here's a video of David Attenborough listening to a tree using a JrF c-series contact mic, though the method shown is not one of the better & less invasive methods;

JrF contact microphones, hydrophones and adapted coils are used by thousands of musicians, artists, tv, film and games companies, universities, arts organisations, galleries and wildlife trusts around the world. 

some of those that use JrF mics include:

ourselves, of course;

Jez riley French

Pheobe riley Law

+ many others including;

ABC (Asutralian Broadcasting Company)
Marja Ahti
Ichiko Aoba
Tarek Atoui
BBC radio and TV (including Planet Earth II, Blue Planet - Ocean, Frozen Planet & The Green Planet series'). I've supplied different members of the BBC sound teams (inc. Chris Watson) with contact microphones and hydrophones for several years.
BBC Proms
Beau Beaumont
Beaux Arts De-Paris
Nicolas Becker
Belfast Uni Sonic Arts Research Lab
Anna Bertmark
BFI (british film institute)
Birmingham University
David Blaine
Eliza Bozek
Mari Kvien Brinvoll
Cambridge University
Channel 4
DICE (EA Games, Stockholm)
Alice Eldridge
Lawrence English
Environmental Research Center, Sohar University
Fordham University, USA
Ellen Fullman
Glasgow University
Evelyn Glennie
Goldsmiths University
Jonny Greenwood (Radiohead)
Bana Haffar
Imogen Heap
Helsinki University
Gordon Hempton
Heriot-Watt University
Kathy Hinde
Huddersfield University
Hull School of Art & Design
Hull University
Tomoko Hojo
Invisible Dust
Jana Irmert
Cicely Irvine
Cecilia Jonsson
Ame Kanngieser
Rahel Kraft
Brandon LaBelle
Tine Surel Lange
Leeds Beckett University
Cheryl E. Leonard
Signe Liden
Lincoln University
Kajsa Lindgren
Francisco Lopez
Loughborough University
Olivia Louvel
Nicole Masters 
Sally Ann McIntyre
Stephanie Mercedes
Middlesex University
MoMA, New York
Morley College, London
Jake Muir
Museum National d'Histoire Naturelle
Jenny Berger Myhre
National Film & Television School
The National Theatre, UK
New Zealand Radio
Newcastle University
BJ Nilsen
Sherry Ostopovitch
Oxford University
Carina Pesch
Karen Power
Martyna Poznanska
Quay Brothers
Queens University, Belfast
Emily Richardson
Liis Ring
Manja Ristic
Royal Conservatoire of Scotland
Joana de Sá
Ryuichi Sakamoto
Simon Scott
Sealife Centres, UK
Sheffield Hallam University
Sigur Ros
Geneva Skeen (("Ableton and my Jez riley French contact mic maintain their position as the top two most important pieces of gear I have" - interview)
Skywalker Sound
Rae-Yen Song
Sorbonne (Paris)
Ulrike Sparre
Alexandre Spence
Stanley Picker Gallery
Lucie Stepankova
Izzi Stevenson
Studio 24, Pinewood Studios
Jenny Sunesson
Sydney College of the Arts
Tate Modern
Tate Britain
The Deep Submarium
Theatre National De Chaillot
David Toop
UiT - The University of the Arctic, Norway
University College, Cork
University of Bath
University of Montreal 
University of Surrey
University of Sydney
Annette Walker
Chris Watson
White Cube Gallery
Whitworth Art Gallery, Manchester
Wildfowl & Westlands Trust
Jana Winderen
Richard Youngs


they've also been used on films / tv series /games / theatre shows such as:

The Theory of Everything

Flux Gourmet

The Imitation Game



Fantastic Beasts




God's own country


Harry Potter & the Cursed Child

The book of Mormon 


The Lion King

The Women in Black

Summer and Smoke

Black Mirror 

Star Wars (films and games)

The Martian

Blade Runner 2049

Game of Thrones


Call of Duty

Battlefield and 100's more...

To date I’ve not received any negative feedback on the quality of JrF mics or the service offered. Here’s a small sample of customer feedback comments:

‘The c-series contact mics are the best. Thanks’

‘The best hydrophone on the market for the price without doubt’

‘Quality sound, design and construction. A+’

‘Better than the other hydrophones I have & they cost me over $350 !’

'Amazing ! couldn't believe the results I got'

'great value'

'Thanks Jez, i'm finding some amazing sounds with these'

'Just been to a workshop led by Chris Watson & loads of people thought these were great'

'Beautiful microphones. Thanks’

'Opens up a whole new world of listening’

'Totally the best contact mics i've ever heard’

'Your hydrophones are amazing. Thank you’

'I've not used coil mics before but am amazed by yours. I can't stop walking around listening to electromagnetics'

'Thank you so much for your microphones. They are the best’

'Unbelievable quality for the price. Thanks’


'After many months travelling and recording sounds in South America, I am finally back in England and I wanted you to know that your microphones (contact & hydro) have been some of the best companions during my travels. They never let me down and have allowed me to hear and explore worlds I would have never been able to probe otherwise. So, a warm thank you for this!'

'Currently listening to today's d-series hydrophone recordings and I feel like weeping/doing cartwheels. So pristine, the dynamic range, the frequency range, etc. Unbelievable'

'my team just got back from our humpback whales expedition, and the hydrophones you created just made everything easier and more amazing. Hearing the whale songs through the hydrophones itself was a very memorable experience'

'perfect in every way'

'i'm stunned by the quality of these mics'

'these are superb !' (c-cm contact mics)

a member of our studio team recently purchased the Hydrophone D model and a pair of Contact C model microphones from you. We've been absolutely stunned by the quality of the units!

Thank you for creating these amazing microphones at such an affordable price! It was a real blessing that we found your website and was able to order them. We look forward to ordering a bunch more microphones from you in the future!

Just let you know your hydrophone is working on a daily basis,  and its great. We have had whales singing through our PA systems most days on whale watching trips. Thanks, its great to get some thing that exceeds expectations.

amazing !

great quality, fast service. thanks.

Jez, your mics have inspired. 

Charles Lindsay made a nice recording of a bamboo grove in Costa Rica, which you can hear on the link below, using 2 c-series contact mics & commented: ' I'm really impressed with the frequency range of the mics - thank you again - beyond a worthwhile, great addition to my recording arsenal'


amazed with the frequency range of your c-series contact mics Jez !

thanks Jez. I'm amazed with the sounds i've discovered with your mics already.

Excellent service and product.Thank you

V.happy with purchase!

Excellent Product / Good Price / Good Package / Fast Shipping

Thanks, this mic is great! Quick overseas shipping.

very good, very helpful, definitely recommend.

Wonderful hydrophones. Great sound and well made. Fast shipping. Thanks!

Any serious sonic artist should be equipped with at least one of these!

Fantastic service! Looking forward to experimenting. THANK YOU!!

Excellent product.Great quality.Opened up so many opportunities for recording.

Wonderful!! had some amazing results already.

Amazing service, brilliant custom made item, speedy service.

Top Quality & fun to use, buying more. Most helpful supplier. Good advice given.

Works like a dream! Thanks.

The Hydrophone works great, fast delivery. Thanks!

Fantastic item - I've bought 2 now. Thoroughly recommend. A+++++++++++++++++++++

Excellent Item. If you need one of these BUY ONE HERE. Bravo.

Wonderful product and seller, thank you very much.

fast and perfect. Very good seller and excellent communication!

AMAZING seller arrived well before expected and was completely as described.

Microphone works great! Good communication, well packed.

Well made, great contact mic.

Excellent product.

AMAZING seller arrived well before expected and was completely as described.

This hydrophone works great, excellent quality.

Excellent service-quality of sound from mic is second to none-great value too.

Great value - highly recommended.

Totally Brilliant. Thanks.

Excellent in every way!

Excellent - highly recommended. Thanks for your help with the item also.

Well made mic, good response. Promptly delivered, good comms. 5 stars *****

Great item and very helpful seller, thanks!.

Fast delivery, excellent item as described! Highly recommended seller AAA+++

Thank you - Brilliant!

“I have been using JRF C series contacts mics for several years across a wide range of projects and commissions. The robust build quality and wide frequency response of these transducers has allowed me to investigate the movements of plants and substrates in a range of challenging and hostile environments. I have used them on location to record sand grains in the Namib desert and the actions of leaf cutter ants in Costa Rica for a BBC TV wildlife series as well as the forbidding harmonics within a partially decommissioned nuclear power plant for the recent ‘Chernobyl’ TV drama”. "JRF C series contact mics allow access to explore under the skin of the acoustic world and introduce the listener to sounds and vibrations that are otherwise beyond our reach.” - Chris Watson

As part of the BBC science series, 'Bang Goes the Theory', Chris Watson used JrF c-series contact mics as he listens to the sounds of snails, centipedes & maggots using one of my JrF c-series contact microphones.

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