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    Product Code: AAAB022

    Availability: In stock


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    The Chorus is an affordable, customizable wildlife recorder, designed for tough field conditions.


    At Titley Scientific, we are experts in bat detection, and we’ve applied our know-how to the field of robust acoustic recorders. Now you can record bats, birds, frogs and other vocalising wildlife with one detector. The Chorus is an easy-to-use detector, compact, lightweight and customizable detector.

    The Chorus is designed to survive your tough field conditions. It’s weatherproof and robust, with low-profile microphones (to reduce the likelihood of pesky livestock and wildlife chewing them). But even if your microphones do get damaged, they are easily user-replaceable in seconds– so you don’t need to send the detector back, just replace the microphone in the field.

    An acoustic microphone is included with the Chorus, so if you want to record birds or frogs, it’s ready to go! It’s also dual-channel, so you can add an ultrasonic microphone to record bats, or a second acoustic microphone for stereo recordings. You don’t need any extra devices (such as phones) to set up the detector - no Bluetooth required, making deployment more reliable. Check your configuration on-detector using the internal OLED screen. You can choose from our automatic schedules for night-mode, day-mode, or continuous recording, or create your own schedule; you can record bats at night and birds during the day. You can even record bats in zero crossing on the detector to save on memory space during long deployments.

    The Chorus battery-life is second to none, allowing you to record for up to 50 nights in full spectrum ultrasonic, or 300 hours of acoustic recording on just 4 AA batteries. Like all our detectors, a built-in GPS comes as standard. All your files will be geotagged, your location will be used to calculate sunset and sunrise for automatic scheduling, and you can even activate transect mode to record a track.


    • Easy to use, weatherproof and robust
    • Includes one acoustic microphone
    • You can choose additional microphones to record ultrasonic or stereo acoustic in one deployment
    • Microphones are user-replaceable
    • Lasts for up to 50 nights (full spectrum ultrasonic) or 300 hours (acoustic) on 4 AA batteries
    • Built-in GPS
    • Stand-alone detector, no phone required for setup
    • Built-in temperature sensor
    • Automatic schedules for easy deployment, or create your own custom schedule
    • Transect mode available
    • Analyse recordings with free software Anabat Insight
    • Headphone output to check microphone performance



    The Chorus comes supplied with one acoustic microphone. You have the choice of adding another of our low-profile, user-replaceable acoustic or ultrasonic microphones. Both microphone types can be used with our flexible-gooseneck microphone extender accessory. The Chorus has two channels, so you can customize your microphone setup to record in mono (1) acoustic, dual acoustic and ultrasonic (not simultaneously), or stereo (2) acoustic.

    Omnidirectional Acoustic Microphone Specifications Acoustic Microphone

    • Includes a military-grade water-resistant wind sock
    • Built-in low noise preamplifier
    • High performance electret microphone capsule with excellent sensitivity and low noise floor (-24dB sensitivity with 80dB signal-to-noise ratio)
    • Frequency response of 20Hz – 20kHz




    Ultrasonic Microphone

    Omnidirectional Ultrasonic Microphone Specifications

    • Weather resistant (capsule protected by waterproof membrane)
    • Low noise floor
    • Improved frequency response when compared to previous generation electret-based ultrasonic microphones
    • Useable frequency response of 10kHz to 140kHz (response rolls-off beyond this point)






    Chorus Includes

    One acoustic microphone with wind sock and magnetic lanyard for checking status. Please note SD Card and batteries are sold separately.


    Interested in how the Chorus compares to other products on the market? Check out our Product Comparison Chart

    Bat Detector Comparison

    Acoustic Detector Comparison





    External Dimensions

    194 x 123 x 50mm (7.3 x 4.8 x 2 inches)


    430 grams (15.3oz.) without batteries


    Shrub green


    Weatherproof and shockproof (IP67) with multiple mounting options

    Power Requirements

    4 AA batteries

    Battery Life

    Up to 50 nights* ultrasonic, up to 300 hours acoustic


    Built-in, daily GPS fixes, transect mode


    1 x SDHC/SDXC memory card (up to 1TB)

    Frequency Range

    Response rolls off at 140kHz (depends on microphone used)

    Sample Rates

    500, 320, 192, 96, 48, 44.1, 32, 22.05 ksps


    Mono/Stereo acoustic, or mono ultrasonic


    Choice of weatherproof ultrasonic and/or acoustic user-replaceable omnidirectional microphones

    Audio Output

    Frequency division (ultrasonic) and stereo reproduction (acoustic) through headphones

    File Output

    Full spectrum (.wav), zero crossing (.zc) and GPS track (.gpx)


    Free to download Anabat Insight


    Acoustic microphone with wind sock, magnetic lanyard for checking status


    Detector: 2 years; Microphones: 1 year

    Optional Accessories

    Ultrasonic microphone, additional acoustic microphone, lockable security box, flexible-gooseneck microphone extender

    *Battery life estimations based on 10% bat activity at 25°C and 10 hour nights using 4 (Alkaline) AA batteries

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