.
icListen HF Hydrophone
Discover the icListen HF
We developed the world's first smart digital hydrophone, the icListen, setting a new global standard in underwater acoustic sensing.
The icListen delivers real-time listening, detects acoustic events as they happen, and records high-resolution data – all in one compact, rugged device.
Small enough to carry in one hand, our simple, accurate, and reliable icListens allow users to collect, analyze, and listen to ocean sound data in real-time.
Ocean Sonics follows a rigorous calibration procedure developed by the International Electrotechnical Commission (IEC), a global organization that creates industry standards for electronic devices IEC 60565.

Features & Benefits
- Perfect Combination of Sensitivity and Performance: Captures broadband underwater sounds with precision.
- Exceptionally Low Noise Floor: Ensures clean recordings free from unwanted electronic noise.
- Real-Time Processing: Stream and analyze data instantly for immediate insights.
- Broadband Frequency Range: Monitors a wide spectrum of underwater sounds from low to high frequencies.
- Compact and Portable: Lightweight design makes it easy to transport and deploy.
- Air Travel Friendly: Designed for safe transport on aircraft without special handling requirements.
- High-Quality Data: Low noise floor and sensitive design provide clean, precise recordings.
Which icListen Hydrophone is for you?
icListen HF ALTA
Frequency
10 Hz - 200 kHz
Sensitivity
-173 dB re V/uPa
Peak SPL
180 dB re uPa
Depth Rating
900m
Communication Interface
Ethernet
Modes
Waveform/FFT/Event Detection
10 Hz - 200 kHz
Sensitivity
-173 dB re V/uPa
Peak SPL
180 dB re uPa
Depth Rating
900m
Communication Interface
Ethernet
Modes
Waveform/FFT/Event Detection
icListen HF ALTA
Frequency
10 Hz - 200 kHz
Sensitivity
-173 dB re V/uPa
Peak SPL
180 dB re uPa
Depth Rating
3500m, 6000m
Communication Interface
Ethernet
Modes
Waveform/FFT/Event Detection
10 Hz - 200 kHz
Sensitivity
-173 dB re V/uPa
Peak SPL
180 dB re uPa
Depth Rating
3500m, 6000m
Communication Interface
Ethernet
Modes
Waveform/FFT/Event Detection
icListen AF ALTA
Frequency
10 Hz - 12 kHz
Sensitivity
-159 dB re V/uPa
Peak SPL
165 dB re uPa
Depth Rating
900m, 3500m
Communication Interface
Ethernet
Modes
Waveform/FFT/Event Detection
10 Hz - 12 kHz
Sensitivity
-159 dB re V/uPa
Peak SPL
165 dB re uPa
Depth Rating
900m, 3500m
Communication Interface
Ethernet
Modes
Waveform/FFT/Event Detection
icListen Hydrophone in Action
What's in the Box
