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Pettersson M500-384 microphone

Pettersson M500-384 microphone

The M500-384 USB Ultrasound Microphone enables you to make high-quality, full spectrum recordings of bat calls or other ultrasonic signals with a wide variety of computers/laptops/tablets/smartphones, using the sound recording software of your choice. The M500-384 uses standard sound device drivers and does not require installation of any custom drivers.

Like the M500, the M500-384 comes in a slim and durable aluminium enclosure and utilizes the same advanced electret microphone technology as the well-known D500X detector.

The M500-384 can be used both in directional and omni-directional modes. The M500-384 is the ideal choice if you intend to use your smartphone for ultrasound recording. Also consider this model if you need to be independent of a specific OS or software. The software you choose to use must support recording at 384 kHz. Works with Android, Linux (Ubuntu), OS X, iOS or Windows. Please verify the hardware/software compatibility and that 384 kHz recording is supported. Certain smartphones/tablets – particularly low-end devices – have been found not to support USB audio at 384 kHz.

Our microphones are naturally compatible with our own BatSound and BatSound Touch software. Some other recommended software for various operating systems include Audacity (Windows, macOS, Linux), Ultrasonic Analyzer (iOS) and Bat Recorder (Android).

A 0.5 m USB (type-A to mini-B) cable is included. USB cables of type mini-B to micro-B/OTG and mini-B to USB-C, suitable for use with smartphones or tablets, can be purchased separately.

The picture shows the M500-384 with an Android smartphone, running the Bat Recorder app, available at Google Play. The smartphone shown in the picture is only for reference and is not included with the M500-384.


Manufacturer's warranty is 1 year. Buy from us and get a 2 year warranty. Microphone warranty is 1 year.


Weight60 g
Dimensions43 × 114 × 13 mm

Advanced electret

Sampling frequency

384 kHz

ADC resolution

16 bits

Frequency range

10 kHz – 160 kHz


USB 2.0, full speed, OTG/host

Anti-aliasing filter

8th order, 160 kHz


USB bus powered

    VAT Included
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