In a nutshell
The Aquarian H2A is a compact and economical hydrophone with a 9-meter waterproof cable with a male XLR3 plug at the end.
It is powered by 48V Phantom but be careful, its wiring is asymmetrical and only pins 1 and 2 of the XLR are connected. This ensures a lower consumption in an environment where the absence of electrical disturbances in aqueous environment avoids having to use a symetrical transmission more power consuming.
This hydrophone can also be used as a surface vibration sensor by adding a small rubber cap supplied with it.
Our recommendations
Asymmetric transmission of this hydrophone may be problematic in swimming pools where water pumps can disturb.
It is powered by 48V Phantom but be careful, its wiring is asymmetrical and only pins 1 and 2 of the XLR are connected. This ensures a lower consumption in an environment where the absence of electrical disturbances in aqueous environment avoids having to use a symetrical transmission more power consuming.
This hydrophone can also be used as a surface vibration sensor by adding a small rubber cap supplied with it.