TBS25 test box with the lid opened, shown frontally and from the side


TBS25 outperforms larger test boxes by 25-40 dB at low frequencies. The test box provides a perfect environment for hearing instrument testing (HIT) down to input levels of 35 dB SPL. Combine TBS25 with hearing aid fitting solutions from Interacoustics.
  • Built-in loop for telecoil testing
  • Valid testing of hearing instrument performance
  • Plugs for microphones, battery drain meters and external telecoil
  • ANSI and IEC compliable HIT measurements
  • Speaker in the same vertical plane as the hearing aid
Additional TBS10 test chamber.

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