1) JrF d-series hydrophones (pair)
2) cetacean research hydrophone £ (considerably more expensive than JrF - they don't display prices on their website !)
3) aquarian hydrophone £ again considerably more expensive the…
@angakokthoth: that's very odd - the first one has significa…
I must say that I'm very very happy with my JrF's that I got…
Aquarian hydrophone H2a-xlr
cetacean C55 hydrophone