Ambient ASF-1: first impressions

Next week I’ll be travelling to a remote location on the Outer Hebrides of Scotland to record the sounds of Julie Brook’s captivating ‘Firestacks’, above and underwater. A very exciting project in many ways, not least for the quality noise-pollution-free time I will be having but also because I get to use arguably the best underwater microphone in the market: Ambient Recording's ASF-1 a.k.a The Sound Fish.

Close up on the ASF-1 Stainless steel body (centre) and acoustic sensor with NBR membrane (right).

I received the microphone yesterday and went straight to the closest water feature to give it a test. I will say straight away that I was blown away by the quality. From feel to looks it is apparently clear this is a superior piece of kit. It ships with a default (thick) 10m long cable and I also got a 50m one as the location I'll be recording in is subject to high tides.

The Arney river from Arney bridge in County Fermanagh, Northern Ireland.

ASF-1 (left) and JrF D-Series (right) going for a dip.

To a Field Recordist, the opportunity of hearing something you’ve never heard before or just hearing it like never before, is the ultimate reward. The ASF-1, with its low noise and wide frequency response, enables just that. My experience with underwater recording so far always left me with a feeling that something was missing. Frequencies mainly but also the sensation that water was an adverse and somehow inaccessible medium for sound. This hydrophone completely removes all those barriers. It gives, allow  me the pun, a fully immersive experience. Here's a few downloadable samples:

To sum up, in case it wasn’t clear enough: I’m completely sold. And if I had the money I’d get it straight away, times two. The total cost including underwater accessories would circle around £1500 per mic, so for the moment we’ll stick to renting it from these lovely people

PS - a short comparison A/B file with the JrF D-Series Hydrophones can be downloaded here - I'll let you draw your own conclusions.