LSTN2 Underwater Hydrophone

Seiche LSTN2 is a low cost, high quality listening device for marine exploration, eco-tourism, research and
recreational use.

“Drop the hydrophone in and start listening. It really is that simple. We’re already using it as part of our awareness raising work to bring the underwater world to life for passengers on Dolphin Survey Boat Trips. Hearing dolphins in the wild really is something special and listening to the sounds in the sea can be a real eye opener. This is a fantastic piece of kit that adds a whole new dimension to the underwater world that surrounds us. You should certainly find a place aboard your boat for it whether you’re a regular boat user or a researcher. You’ll enjoy how quick and easy it is to use.” Sarah Perry, Cardigan Bay Marine Wildlife Centre.

Features:

  • Auto on/off control by connecting/disconnecting the hydrophone
  • HiFi headphone preamplifier
  • Mono line out for further sound processing
  • Splash proof / water resistant unit

Equipment specification:

  • Frequency Range: 10 Hz – 24 kHz
  • Input: Hydrophone DIN connector
  • Auxiliary output: ~500mV RMS
  • Headphones output: ~80mW @ 32Ohm
  • Batteries: 4x 1.5V, AAA (LR03)
  • Power Consumption: ~24 hours (alkaline batteries)
  • Cable: 10 metre quad microphone cable
  • Directivity: Bidirectional

Unlock the Power of Real-Time Visualisation on Your Smart Device


The LSTN2 puts the power of real-time sound visualisation at your fingertips. Seamlessly integrate
with compatible software to explore the hidden depths of your acoustic environment. This software
enables the user to dive deeper into recordings through visual spectrograms and analysis.
Software options include SpectrumView Plus for Apple devices and Real-time Spectrum Analyzer for
Android. These intuitive apps, available through your device’s app store, provide a suite of features:

  • Real-Time Spectrogram View
    o Instantly see the frequency composition of live audio, enabling you to make
    insightful observations.
  • Real-Time Spectrum Analysis
    o Gain deeper understanding of your sound with real-time spectrum analysis
    capabilities.
  • Multiple Sample Rate Options
    o Tailor your data capture to your specific needs, with support for various sample
    rates.
  • Recording and Playback
    o Document your audio environment and revisit recordings.

The LSTN2 and software opens the door to a deeper and more immersive audio experience of the
underwater world.