hydrophones by JrF


£50 (uk) / £55 (rest of world)

to order please visit the ordering page

As an experienced field recordist / artist / composer I have used this design to make recordings, in gallery installations and when performing live.

They come sealed and multi-coated (including unique marine and acoustic transfer coatings) + internally coated to provide a totally waterproof finish and are weighted.

They are available with either a standard jack or a mini-jack (please specify which you require at the time of purchase).

adaptors for connection to XLR imputs and from a stereo pair to a single mini jack input can be found on the adaptors pages

They come with 5m of cable as standard

extra cable @ £2.50 per metre can be purchased by emailing me

They are piezo based hydrophones, with the high spec piezo elements sealed into plastic capsules (chosen for their particular qualities) with multiple layers of waterproof coatings.

Pairs (for true stereo) are also available.

see the 'tips and guidance' and 'frequently asked questions' page for further info.


contact microphones by JrF

contact mic

£25 (uk) / £28 (rest of world)

to order please visit the ordering page

. high quality hand finished piezo element.

. multi dipped in unique coatings.

. 2 metres of low noise, specially designed high quality cable

extra cable (per metre) can be purchased for £2.50 per metre 
(email me to order custom length mics)

. can be supplied with standard ¼ inch jacks or 3.5mm mini-jacks (please specify at time of purchase)

adaptors to connect to XLR inputs and from two mics to a single 3.5mm input can be found on the ordering page

Ideal for use on instruments and in field recording.

Pairs – for true stereo are also available (these are two separate contact mics – allowing for placement experimentation and a wider field of sound capture)


induction coil pick-up's

£15 (uk) / £18 (rest of world) - with mini-jack (pre-fitted)
£18 (uk) / £20 (rest of world) - with 1/4 inch jack (fitted)

to order please visit the ordering page

for picking up electronic signals / sounds ie. the internal sounds of a laptop, lightbulbs, recorders, household gadgets etc etc.

A fascinating and rewarding method used by myself in performance, installation and on several releases, also used by sound artists and field recordists around the world.

you can hear some of the sounds these can pick up on an exclusive MP3 track I created for THE WIRE magazine by clicking here on this piece you will hear field recordings of the general wire office ambience along with the inner sounds of their computer systems, alarm boxes and light fittings.

whilst most other coils on the open market have certain limitations placed upon them, these adapted coils can detect a wider range of sounds that the technology is capable of.

They come pre-fitted with a 3.5mm jack plug and can be used with decent 3.5mm to 1/4 inch or XLR adaptors.

Please note: adapting the coils not only increases the range of frequencies but also boosts the overall signal level.

PLEASE NOTE: I only adapt these coils - hence the price. Depending on which country you're in it might be possible for you to find coils that don't have the limiter on for sale elsewhere.