At Amplivox we take pride in helping and servicing our customers at the highest possible level. Our after-sales service includes calibration and repairs to ensure your Amplivox equipment works at its best for the longest time possible. We can also help you with services on products manufactured by other companies.

How to book a calibration

  • returns-form-icon

    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 >

  • send-instrument

    Send instrument

    UK customers: Include the UK Returns form with your instrument and it’s 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.

  • instrument-return-icon

    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.

  • Calibration options

    We calibrate medical instruments globally to maximise the life of the product, check measurement accuracy and compliance to manufacturers and international standards.

    We endeavour to provide a high level of service with an efficient turnaround time with competitive pricing. We calibrate and support all audiological equipment from leading manufacturers and many other types of medical equipment. We offer a return to base calibration service and an on-site calibration service.

  • A: Return to base calibration

    Send the instrument to Amplivox. A calibration can be completed by one of our trained service engineers and returned to you. If your calibration is urgent please contact our customer services team by via phone on +44 (0)1865 880846 or email.

    B: On-site calibration

    If needed we can visit your company and calibrate equipment on-site. This is recommended for companies who have many instruments so they can be calibrated at once. Due to high demand, we advise to book on-site calibrations as early as possible in order to meet preferred times.

Calibration code request

Need a repair?

On the occasion your instrument breaks or becomes damaged, we can provide an efficient repair service to rectify the issue quickly and ensure your instrument is returned in full working order. Our repair service applies to both Amplivox manufactured instruments and many other audiological and medical equipment brands.

Book a repair

Frequently asked questions

  • What is audiometer calibration?

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

    Why choose Amplivox for your calibration services?

    Our customer support team work with carefully selected partners, engineers and technicians to manage and deliver a state-of-the-art calibration service to thousands of customers around the world.

    By choosing Amplivox, you can rest assured that your instrument will be measured according to the appropriate standards and with the highest levels of care. Our team will support you in reminding you about your calibration as well as help booking you in for the appropriate service.

    Which products do we calibrate?

    We calibrate and support all screening and diagnostic audiological medical 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.

  • When should audiological equipment be calibrated?

    Medical equipment should be calibrated according to manufacturer’s guidelines and legal requirements. These may differ by country and we will support you to ensure you are aware of the requirements. When test results seem to be off expected measurements, a calibration will ensure the equipment measurements are returned to the right standard. This can for example happen when an instrument is dropped or had a sudden shock.

    How long will my calibration take?

    We offer various calibration services to suit your requirements from an on-site calibration to a return to base calibration. When choosing a return to base calibration, your equipment will be calibrated and returned to you within 5 working days of receipt and remains fully insured at all times.

    What standards does Amplivox calibrate towards?

    Amplivox and partners are accredited to the latest ISO 13485:2016 standard and all audiometric calibration work is performed according to the following standards:

    • Air conduction – ISO 389-1: 2017
    • Insert earphones – ISO 389-2: 1997
    • Bone Conduction – ISO 389-3:2016
    • Narrow band noise – ISO 389-4: 1999 

    When choosing Amplivox for your calibration services, you can rest assured that all equipment is maintained according to National standards with clear traceability.