Loading... Please wait...


Our Newsletter

Ultrasonic Receiver with Directional Microphone and Parabolic Dish

  • Assembled HT90P with Headsets
  • Assembled HT90P
  • Assembled HT90P
  • Assembled HT90P
Calculated at checkout

Product Description

Lets you hear the amazing world of high-frequency sounds. Many uses in the scientific field especially entomology to study insects, bats and other animals. Also used for man-made sounds such as leaking air, water, gas, steam, pipes, etc. Or as a detection device allowing one to hear animals or people walking in the woods on dry ground, even through wet grass. A crumpling plastic bag, the jingling of a key chain, etc. This unit opens a whole new world allowing you to listen to sounds you didn't think even existed!

Hear The Astounding and Incredible World Of High Frequency Sounds - Beyond That Detectable By The Human Ear!

Hears Ultrasounds and Rejects Normal Sounds

Battery operated directional device detects sounds beyond the range of human hearing, with narrow band tuning from about 23 to 27 kHz (-3db points), allowing you to hear and pinpoint mechanical, electrical and biological sounds such as leaking gases, air, water; corona leakage; motor frictional sounds potentially including bearing wear breakdown noises; bats, insects, and other sounds of mother nature; a hunter's aid for high frequency sounds made by animals traveling through dry woods or even wet grass -- even beading water! There are countless applications for this unit.

Pinpoint Those Annoying Sounds Coming From Animal Repellers, and Those Who Might be Purposely Using Ultrasounds Against You for Harassment

The 12" aluminum parabolic dish increases the amount and sensitivity of collected sound (increases the reception of fainter sounds, or those from a longer distance), and provides more of a directional target location.


Click HERE for actual bat sounds recorded using the HT90

This device is not made to hear sounds that the human ear can normally perceive, but instead it will hear ultrasound beyond the range of human hearing. (To amplify normal sounds, please see our other devices, such as the Cybernetic Ear, TurboEar, Parabolic Bionic Ear, Parabolic Microphone, Shotgun Microphone, etc.)


Free HT90 Instructions

Front panel controls:
  • 3.5 mm phono jack for audio output into headsets or recorder or both
  • On/off and volume control
  • Narrow band tuning dial from 23 to 27 kHz (-3db points)
  • Uses eight AA batteries installed in handle (not included)

Included headsets may differ from those shown in picture.

This item is assembled and ready to use.
It is also available as a kit with plans and all parts, requiring assembly.
Or as plans (paper or downloadable versions), with parts and assembly required.

Find Similar Products by Tag

Write your own product review

Product Reviews

  1. HT90P is an awesome piece of equipment! 5 Star Review

    Posted by on 12th Nov 2021

    The HT90P is so well made & easy to use. It is very light weight & not cumbersome to use. It is all assembled & ready to use. It's battery operated & uses 8-AA batteries which you install in the handle. The HT90P was able to clearly pinpoint where the Ultrasound was coming from. My 34 year old son was able to experience & hear what I've been going through since I am being harassed by a neighbor who is using Ultrasound waves. The unit was very well packed & shipped very fast. The HT90P was exactly what was described & pictured. They are extremely reputable, reliable, & place a great deal of focus on customer service. I highly recommend this seller! They are a solid company & is always interested in satisfaction after the sale. Great communication! Well worth every penny! Thank you again! Looking forward to the unit that is in the works, that will have a recorder on it & then I can pursue this further. I will then have proof to take to the police, zoning board, landlord, etc. Can't wait! Hats off to whom ever made the HT90P! Thank you from the bottom of my heart!