Aquaear CR80‑40 — Ultrasonic Research Grade Hydrophone (7 Hz–80 kHz)

Aquaear CR80‑40 — Ultrasonic Research Hydrophone (7 Hz–80 kHz)
The CR80‑40 extends well into ultrasonic frequencies for users working with dolphins, high-frequency biological sounds, and demanding monitoring tasks—while still covering low-frequency whale vocalisations and ocean soundscape.

Best for
Dolphin monitoring where ultrasonic content matters, broader research work needing higher bandwidth than standard audio, and projects running 192 kHz-capable recording systems.

Why this model

• Wide frequency range for mixed low + ultrasonic targets
• Active design for lower noise across cable runs
• Suitable for deeper deployments and repeated field use

Important compatibility note
To record ultrasonic frequencies, your recorder/interface must support a high sampling rate (for example, 192 kHz to capture up to ~96 kHz). If your recorder tops out at 48–96 kHz, you may not benefit from the CR80‑40’s full bandwidth.