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The Hearpiece is an electroacoustic earpiece for research and development of assistive listening systems and hearables. It includes two earpieces and four microphones on each side, built into a universal fit. The Hearpiece fits approximately 90% of all ears and fits comparably to a custom earmold. In a vent, both drivers and a microphone are positioned at separate locations inside the ear canal, opening up many signal processing possibilities. The Hearpiece is available in a vented or closed version, as well as with or without integrated microphone preamplifier.

These earpieces were developed in cooperation with the University of Oldenburg and InEar GmbH, Dieburg.

Technical data

Sensitivity microphones -38 dB V/Pa
Supply voltage 3.0 - 3.6 V
Driver sensitivity 100 -110 dB SPL/V @1kHz je nach Konfiguration
Max. Output level 110 dB
Cable length 1m

Versions (prices incl. VAT)

Direct connection 699 €
With microphone preamplifiers 999 €

Configuration options

Vent color connection
open, ca 1.5 mm² black Sub-D 9 Stecker, schraubbar
Vent closed Transparent without

Scope of delivery

1 pair of Hearpieces
Pelican Case
8 pairs of silicone earpieces (4 sizes)

The Earpieces can be purchased here from the industry partner InEar GmbH, Dieburg or via mail.

Further Information:

→ Scientific paper with detailed description and acoustic data

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