Eavesdropping protection system BugHunter BDA-3 (ultrasound + white noise)

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$580.00 - $959.00 / Pieces | 1 Piece/Pieces (Min. Order)
Model Number:
BugHunter BDA-3 with speaker
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Quick Details
Place of Origin:
Russian Federation
Brand Name:
i4 Technology
Supply Ability
Supply Ability:
200 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
Cardboard box
Product Description

Eavesdropping suppressing system "BugHunter bda-3" with 7 ultrasonic transducers – new 2018 model with an improved jamming system and an additional external ultrasonic speaker. It has 2 additional transducers on the top panel that create a "virtual wall" for maximum protection from sound recording devices. Device blocks any microphones, dictaphones (including professional ones) in the range of 7 meters (23 ft) and at even greater range when using the external ultrasonic speaker. For a maximal efficiency of ultrasonic interference it is advised to engage "TURBO mode". Acoustic interference volume can be adjusted (and even turned off for a completely silent operation), power can be supplied through a 220V power source or built-in battery.

Key differences from the old model:

New jamming system. "BugHunter DAudio bda-3 Voices" has a new ultrasonic pattern that guarantees even more reliable jamming of spying equipment in its range.

Two vertical ultrasonic transducers create a "virtual wall" In addition to 5 transducers on BDA-2, the new model has two additional transducers located on the top panel of the device. Emitting interference in a vertical direction these two transducers create a "virtual wall" that protects you from any microphones or dictaphones located behind it.

Additional ultrasonic speaker. In comparison to "BugHunter DAudio bda-2 Voices" that supported only acoustic speakers to amplify the acoustic interference, the new model supports connection of ultrasonic speakers via mini-jack 3.5mm cable. Working with an additional speaker "BugHunter bda-3" efficiently suppresses even hidden microphones, which are located outside the range of seven main transducers. For maximum efficiency additional speaker can be placed on the side of the speaking person (so that transducers are pointed at him from different directions) or under the table.

Other advantages of "BugHunter DAudio bda-3 Voices"

Acoustic speech-like interference guarantees 100% confidentiality. In addition to ultrasound, the new model has a powerful speech-like interference that generates randomly and makes eavesdropping completely impossible. You can't filter out such interference even on the modern equipment, so no matter what adversaries do they will only record meaningless noise instead of your conversation. You can be 100% sure in your safety!

Upgraded hardware. Ultramodern elements base gives you the highest possible power of microphone suppression. Besides, high quality hardware increases reliability of device and extends its operating time. We guarantee trouble-free use of the jammer! "BugHunter DAudio bda-3 Voices" will protect you for a long time without breaking which is not the case for many other devices.

100% PROTECTION - not a single spyware with a microphone will be able to "eavesdrop" on your conversation. This reliable protection is possible as a result of using two efficient technologies at the same time: ultrasonic signal + speech-like interference. Any equipment becomes equally useless: laser, wired and wireless microphones, professional dictaphones (such as Soroka, Gnom, E-dic etc.), directional microphones, cellular telephones and etc. "BugHunter DAudio bda-3 Voices" will jam any "bug" and won't let anybody learn your secrets.

UNIQUE! Incredibly high suppression power and range! "BugHunter DAudio bda-3 Voices" emits a very powerful ultrasonic and acoustic signals (up to 120 dB). It can jam microphones at a distance up to 7 m (23ft). Most analogues, especially of Chinese production, are at least 2-3 times weaker even going by the declared characteristics. Emission power is so high that our specialists recommend to keep transducers away from hearing organs to avoid injury.

NEW! TURBO mode for even more effective suppression when you need absolute confidentiality. TURBO mode activates a special generator which emits ultrasound of a slightly different frequency. Interaction of ultrasonic signals of different frequencies creates frequency beats which raise suppression efficiency without raising emission power. It is a

Operating principle

Device generates ultrasonic signal through 7 transducers. Frequency is determined by a micro-controller and variates according to a specially developed algorithm. Ultrasonic signal affects recording paths of spyware which results in them fixating only indiscriminate noise in which conversation can't be distinguished.

Besides, powerful speaker creates acoustic speech-like interference which destroys the meaning of the conversation: because of it spyware fixates only indiscriminate muttering, restoring the conversation becomes physically impossible. Acoustic interference is generated randomly so it can't be filtered out even on special equipment.

Flexible volume adjustment

Acoustic speech-like interference guarantees the confidentiality of the conversation but has one flaw – unlike ultrasound it can be heard and my be a nuisance in a conversation. Our developers took this into account and developed "BugHunter DAudio bda-3 Voices" with an ability to adjust the volume of the acoustic interference. You can always adjust the volume so that device won't muffle your speech and you could speak comfortably. If suppressor is a nuisance, just turn the volume down. Turning the knob to a minimum you will turn the acoustic interference off.

If acoustic interference is turned off, suppressor will be working completely silently (except TURBO mode). One will not pay attention to the working device. If you hide it under the table, for example, there will be no clear evidence that jammer is working.
But without the acoustic interference reliability of protection becomes lower. If you want to be 100% certain that ALL devices with microphones are suppressed, you will have to tolerate small inconvenience.

Use the jammer stationarily or portably.

"BugHunter DAudio bda-3 Voices" can be powered by power supply or by a built-in battery. Its charge will last for a few hours which is a good number for a device of this power. Wherever you go, jammer will always be with you ready to protect you from spying. And you can charge it and use stationarily when you get access to a power supply.

Detailed Images
Packing & Delivery

Package contents

- Microphone, bug and tape recorder suppressor "BugHunter DAudio bda-3 Voices" with seven UV- transducers and acoustic silencer.
- External power supply source (battery charger) from single-phase AC 50 Hz, 110/220 V
- Individual package
- User Manual

Our Company


Our company has been inventing, developing and
manufacturing innovative electronic devices since 1995.
At the time we created an independent subdivision for
development and production of complex electronic
systems on the basis of a military facility.
In 20 years of hard work we have come a long way from
contract manufacturing to our own brand of electronics.
Today we have production facilities in the cities of Izhevsk and Arzamas, and research centers in Nizhniy Novgorod
and Izhevsk where we successfully combine genius minds
and current technology.
In 2008 our products gained high popularity which
resulted in a strong constant demand. We are convinced
that our strategy appeals well to our clients and customers and we will continue living by it: "Production quality, durable devices which conform to declared characteristics".
We don't chase low prices of Chinese products, but we are ready to stand behind the quality, functionality and
reliability of our products.
And we are second to none at this!
All our products come with 12 months warranty.


If you are not 100% satisfied with your purchase, you can return
the product for a refund or exchange it.
You can return a product for up to 30 days from the purchase
date, with return shipping covered only if the item is defective or
not as described. Any product you return must be in the same
condition you received it and in the original packaging.
Refunds are processed after the returned product is received and
If the product arrives in damaged packaging, we recommend
filming the opening process.


We accept payment by PayPal, bank transfer and Western Union

Please pay as soon as possible after winning an auction, as that
will allow us to post your item to you sooner!


This item is shipped by EMS Express from Russia within 1-2
buisness days.

Delivery time varies between 7-20 days depending on the
geographical region.

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