Autonomous Multichannel Acoustic Recorder
Generation 3


 JASCO's underwater acoustic recorder and oceanographic observatory, the Autonomous Multichannel Acoustic Recorder Generation 3 (AMAR G3)


Max. depth: 

Standard (500 m)
Deep (2500 m)
Ultra Deep (6700 m)

Operating temperature: −5 to 50 °C
Storage temperature: −18 to 55 °C
Vibration resilience: Withstands transport by air, ground, or vessel


Dimensions: (D × L): 16.5 x 57.2 cm
Material: PVC, anodized aluminum, 316 stainless steel
Weight in air: 10 kg
Weight in seawater: 1 kg

Hydrophones & Arrays

Various customizable options. 
Sensitivities and frequencies tailored to your needs. 
Example sensitivities:
        −164 dB re 1 V/μPa @ 1 kHz
        −210 dB re 1 V/μPa @ 1 kHz
Example frequencies: 
        1 Hz to 50 kHz
        5 Hz to 100 kHz
        20 Hz to150 kHz
Manufacturers: Various, based on your needs
Acoustic sensors: 
        Omnidirectional hydrophones
        Directional hydrophones
        Vector sensors
        Small linear arrays
        Small spatial arrays


Operating voltage: 7–16 Vdc
AC power adapter: 110–240 V, 50–60 Hz, 0.5 A
Internal battery pack: 9 alkaline D-cells
Optional external battery packs: 48, 96, and 144 alkaline D-cells

Memory & recording

Solid-state flash memory: 256–1792 GB
Recording lifetime: Over 1 year depending on configuration
Acoustic data format: WAV
Non-acoustic data format: CSV

Eight 24-bit acoustic channels

ADC banks:  Two banks of 4 channels; each bank has selectable sample rate
Sample rates: 2–128 ksps
Spectral noise floor: Better than −150 dB re FS at 128 ksps
Gain settings: 0–42 dB

High speed, 16-bit acoustic channel

Sample rates: 125–687.5 ksps
Dynamic range: 14.5 effective bits
Voltage: 0–4.5 V peak-to-peak

Ten oceanographic sensor channels

Sensors available: Oxygen, salinity, acidity/pH, temperature, depth, turbidity, orientation (roll-pitch-yaw), others upon request
Eight analog channels:
        Sample rate: 1 sps
        Voltage: −10 to +10 V
Two digital serial channels: RS-232 and RS-485 

Due to continued product development, these specifications are subject to change without notice.

Contact us for pricing and customization options.