Inventis Drum high attenuation of ambient sounds
Inventis Drum RECD functionality
Inventis Drum with automatic protocols


Drum is a hearing instrument test box (HIT) capable of an impressive ambient sounds attenuation, and featured with all the standard tests for evaluating performances of air conduction hearing aids. Directly controllable from the Maestro software, Noah compatible and equipped with coupler and all adapters for any type of hearing aids, Drum is the perfect solution for those most demanding users who are not willing to compromise on user friendliness of their instrument.


Both IEC 60118-7 and ANSI S3.22 standard sequences for Hearing Instrument testing are available on Drum. Automatic protocols with selectable tests, and tooltips for user actions required are specially developed for simplifying the testing procedure.


Size and shape of Drum are engineered to maximize the attenuation of ambient noise and minimize the internal sound reflection. Made of wood, featuring an egg-shaped internal chamber and, thanks to the sound-transparent foam at the bottom, offering a floating positioning of the hearing aid exactly in front of the speaker, Drum is the perfect test box for getting the highest quality test results.


Connect Drum to the USB port of your Windows® computer, the electrical grid, and you are ready to go: no drivers and no additional cables required.
You can control Drum through the amazingly user-friendly Maestro software interface and, if need be, transfer the data directly to Noah.

Inventis Drum high quality test results
High attenuation of ambient sounds
Engineered to maximize the attenuation of ambient noise and minimize the internal sound reflection.
Simplified procedures
Automatic protocols
Automated protocols with selectable tests are specially developed to simplify the testing procedure.
RECD functionality
It can be used as a RECD if combined with Trumpet.

Available tests OSPL90, Full On Gain, I/O, Attack/Release, Frequency response, Equivalent Input Noise, THD, Battery Drain, Telecoil, RECD
Freq. range 125 Hz – 12.5 kHz
Freq. resolution 1/12, 1/24 octave
Stimulation intensity range 40 - 100 dB SPL
Coupler meas. range 40 - 145 dB
Attenuation @1kHz > 40 dB
Coupler type 2cc, ITE, RIC and BTE adapters
Telecoil drive 10 - 100 mA/m
Battery simulator Standard 5A, 10A, 312, 13, 675
Connection to PC USB (driverless)
Dimensions (WxDxH) 32 x 33 x 22 cm
12.6 x 13 x 8.7 in
Weight 7.5 kg / 16.5 lbs
Controlling SW Maestro (included)
Noah comp. Yes
Min. PC requirement Intel i3 or similar, Display: 1280 x 1024, OS: Windows 7, 8 or 10

Inventis s.r.l. a socio unico
Corso Stati Uniti, 1/3
35127 Padova

Tel.: +39.049.8962.844

North America

Inventis North America Inc.
2503 S Washington Ave #586
Titusville FL, 32780

Toll free: +1.844.683.6847


Synapsys sas
2 rue Marc Donadille
Hôtel Technoptic
13013 Marseille

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