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Aufnahmen der GeräteTransparent earpiece blackCAD-Modell eines linken Earpiece.

The hearpiece is an electro-acoustic earpiece for research and development on assistive hearing devices and hearables. It includes two balanced armature drivers as well as four microphones in each side, which are built into a one-size-fits-all acrylic shell. The earpiece fits in about 90% of all ears and has a fit comparable to an individual earmould. It features custom transducer positioning at different positions inside a vent, as well as a microphone inside the ear canal, which opens up many possibilities for signal processing. The earpiece is available both in a vented as well as an occluded configuration, as well as with and without microphone pre-amplifiers included in the ear.

The earpieces can be purchased through our partner InEar GmbH, Dieburg (click).


Specifications (click for a detailed technical documentation)

A scientific paper containing a detailed description and acoustic evaluation is available here.

A database of individual transfer functions measured with the Hearpiece is available here.

Microphone sensitivity -38 dB V/Pa
Supply voltage 3.0 - 3.6 V
Output sensitvity 100 - 110 dB SPL/V @1kHz depending on configuration
Max. output 110 dB
Cable length 1m

Versions (Price incl. VAT)

Direct connection 699 €
With microphone pre-amplifiers 999 €


Vent Colour Connector
open, ca. 1.5mm² Black Sub-D 9 connector, screwable
Vent closed Transparent none