HY-20 is a complete hydrophone system. You only need a headphone with 3.5mm phone plug Save 20$ and buy Hydrophone and Amplifier together!

Hydrophone HY-01

Specification:

• Frequency range (-3dB) 20Hz to 100kHz
• Transducer Sensitivity[dB, re 1V/µPa] -170
• Maximum Operating Depth (tested) 30m
• Output impedance >10 Mohm (piezo)
• Nominal capacitance: 2.5nF plus cable @ 118pF/m)
• For best results use amplifier with high input impedance >1 Mohm, like HY-11
• Operating Temperature Range -15°C to +50°C
• Cable length about 3 m (other lenghts on request)
• Connector 3.5mm phono mono (or stereo)
• Dimension: Diameter 16mm(max), length of piezo 32mm, total lenght with cable gland 45mm (max)

Application:

Mammal - whale Dolphin sound listening/recording Detect marine mammals for conservation & research Environmental science & research High frequency underwater communication, we can tune the piezo to specific frequency on request! Contact to us for more info! Geophone Kayaking Education Hydrophone Amplifier

Specification:

• Color: Black
• Material: Steel
• Model: HY-11
• Size: 97x60x15mm
• Input/Output Port: 3.5mm Studio Input
• Lithium Battery Capacity: 2000mAh included
• Working Time: More Than 8 Hours
• Amp Internal Voltage: 8.3V/1A
• Output Power: 40mW @ 16Ω
• Adapted Headphone Impedance: 16-150Ω
• Low noise SNR:>100dB
• THD+N: 0.0003%
• Input impedance >= 2Mohm
• Pre Amplifier gain 20dB (10x)