Technical Resources and Standards

On this page you will find some useful resources provided by industry experts, to help further your knowledge of hearing loop system related topics.  

We can offer technical support, not only to our members, but also to anyone else that needs some advice. For technical queries, please contact


IEC 60118-0:2015 

Electroacoustics – Hearing aids – Part 0: Measurement of the performance characteristics of hearing aids

IEC 60118-4:2014+AMD1:2017 CSV  (Consolidated Version)

Electroacoustics – Hearing aids – Part 4: Induction-loop systems for hearing aid purposes – System performance requirements

IEC 62489-1:2010+AMD1:2014+AMD2:2017 CSV  (Consolidated Version)

Electroacoustics – Audio-frequency induction loop systems for assisted hearing – Part 1: Methods of measuring and specifying the performance of system components

IEC 62489-2:2014 

Electroacoustics – Audio-frequency induction loop systems for assisted hearing – Part 2: Methods of calculating and measuring the low-frequency magnetic field emissions from the loop for assessing conformity with guidelines on limits for human exposure

IEC TR 63079:2017 

Code of practice for hearing-loop systems (HLS)

ETSI EN 300 422-4 V2.1.1 (2017-05)

Wireless Microphones; Audio PMSE up to 3 GHz; Part 4: Assistive Listening Devices including personal sound amplifiers and inductive systems up to 3 GHz; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU

Technical Resources

IHLMA Position on Neck Loops and Cardiac Pacemakers

IHLMA recognises a concern expressed by some medical professionals of a potential for interface with cardiac pacemakers from the magnetic fields that exist in very close proximity to the wiring of a neck loop…

The care and feeding of neck loops for assistive hearing

A neck loop is a personal induction loop about 230 mm in diameter, intended to be used with a static or hand-held source of audio signals and transmit them magnetically to the user’s one or two hearing aids equipped with telecoils….

Hearing Loops and Telecoils: When will they become obselete?

The International Hearing Access Committee (IHAC) aims to estimate the time a transition from the existing audio transmission to telecoils via hearing loop (HL) and other assistive listening systems (ALS) to a platform of digital audio streaming direct into hearing aids, will likely take.