Calibration for all audiometry equipment needs

Is return-to-base right for you?

We would recommend return-to-base calibration for companies with a small number of devices that require calibration and are looking for a cost-effective option. To book a return-to-base calibration please complete either the UK returns or International returns booking form below.

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  • The benefits

    • A cost-effective option for small calibration quantities
    • Complete confidence in the efficacy of your equipment
    • Completed by ISO approved contractors

Book a calibration

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    Complete returns form

    To enable an efficient turnaround time for your calibration, pre-book by sending us your completed UK Returns or International Returns form via email. Download and complete the appropriate form below:

    UK Returns form >

    Intl. Returns form >

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    Send instrument

    UK customers: Include the UK Returns form with your instrument and its headset. The shipping label is already completed on the second page of the returns form. We will contact you when the medical instrument has been received.

    Intl. customers: We will provide an RMA number within a working day to add to the International Returns Form. Send the form and instrument to us.

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    Instrument return

    Once the instrument has been calibrated it will be returned. If you have an account or have provided the required purchase order details (or other payment details), we will invoice and return the equipment. 

    If additional work is required or we are waiting for payment of invoice you will be notified.


Include a printout of the completed UK or International Returns form and send with the medical instrument. Also include the headset.

Please back up and remove personal data from your instrument before sending to Amplivox. If instruments are sent containing personal data, you are fully responsible for any such disclosure. Amplivox will delete any personal data immediately from the instruments without any further notice.

Frequently asked questions

  • We take pride in always offering the best possible service and support to our customers across the UK. Working with carefully selected partners, engineers and technicians allows us to deliver a state-of-the-art calibration and repairs service accredited to the latest ISO/IEC 17025:2017 standard and UKAS where required. 


    We calibrate all screening and diagnostic equipment including audiometers, tympanometers (impedance meters), Otoacoustic Emissions (OAE), Hearing Instrument Test (HiT) boxes and Evoked Response Audiometers.

    Our services support many of the world’s leading audiological instrument manufacturers including Interacoustics A/S, Grason-Stadler, Maico Diagnostics GmbH, MedRX and Otometrics. To find out if we support your device, please contact us today.

  • Audiometer calibration is required to ensure equipment is in full working order, maintain instrument accuracy and ensure the device is compliant with medical and legal standards. Calibration of an audiometer is a technical process requiring adherence to the relevant standards.


    Only one headset of the same type can be calibrated to a single audiometer. If an audiometer is programmed for more than one headset it is important to send all relevant headsets with the instrument for calibration.