How to measure headphones and IEMs

When it comes to personal audio, there are a lot of options to choose from. Headphones and in-ear monitors (IEMs) are the most popular choices, but how do you know which ones are right for you? If you’re looking for the best sound quality, it’s important to know how to measure headphones and IEMs. Here’s a quick guide on what to look for.

When it comes to headphones and in-ear monitors (IEMs), there are a few things that you need to take into account when measuring them. First, you’ll need to know the sensitivity of the headphones or IEMs. This is usually measured in decibels (dB) and is a measure of how loud the headphones or IEMs will be at a given same volume setting. Second, you’ll need to know the impedance of the headphones or IEMs.

Why it’s important to measure headphones and IEMs

It is essential to measure headphones and IEMs to ensure they are accurate and will produce the sound quality that you desire. Without proper measurement, it is difficult to know if your headphones or IEMs are accurately reproducing sound. Additionally, measuring helps to identify potential problems with the fit of your headphones or IEMs. Measuring also allows you to make comparisons between different models before purchase.

The different measurements for headphones and IEMs

There are a few different ways to measure headphones and IEMs. One way is to use a sound level meter, which will give you the SPL (sound pressure level) in dBSPL. This is useful for measuring overall relative loudness, but it doesn’t give you any information about frequency response measurements or distortion.

Another way to measure headphones and IEMs is with an oscilloscope and a measurement mic. This setup can give you information about frequency response and distortion. It’s also possible to measure impedance with this setup.

Finally, you can use a headphone amp to measure power output and THD+N (total harmonic distortion plus noise). This method is less common, but it can be useful if you’re trying to optimize the sound of your headphones or IEMs.

What you need to measure headphones and IEMs

There are a few things you need in order to measure headphones and in-ear monitors (IEMs).

First, you need a good quality sound card in your computer. This will allow you to plug the headphones or IEMs into your computer and get an accurate measurement.

Second, you need a software program that can measure the frequency range. We recommend using Room EQ Wizard (REW) for this.

Finally, you need a calibrated microphone. This is so you can take measurements of the sound coming from the headphones or IEMs and compare it to what is being outputted by the sound card. With all of these things, you should be able to get accurate measurements of any headphones or IEMs.

Types of headphone/IEM measurements

There are many different types of headphones and IEM measurements. The most common are:

1. Frequency response – This measures how well the headphones reproduce different frequencies.

2. Impedance – This measures the electrical resistance of the headphones.

3. Sensitivity – This measures how loud the headphones will be when given a certain amount of input power through occluded ear simulator.

4. Total harmonic distortion – This measures how much distortion is introduced by the headphones at different frequencies.

Tools to measure Headphones and IEMs

A good headphone or in-ear monitor (IEM) measuring setup can be the difference between capturing accurate measurements and wasting time and money. Here are some tools to help make sure your headphone measurements are as accurate as possible.


A miniDSP EARS is a small, portable device that can be used to measure the sound quality of headphones and in-ear monitors (IEMs). This tool is designed to provide accurate measurements of flat frequency response graph, distortion, and other important parameters. The EARS model is one of the most popular miniDSP on the market, and it offers a wide range of features for users who want to get the most out of their audio gear.

miniDSP EARS is easy to use; simply connect it to your music player and headphones, choose the measurement you want to take, and press start. The measurement results are displayed on the screen in an easy-to-understand format.

Calibration files

There are many ways to measure the performance of headphones and in-ear monitors (IEMs), but one of the most important is using calibration files. Calibration files allow you to take into account the specific response of your headphones or IEMs to ensure that the frequency response measurement you’re taking is accurate.

There are a few different ways to create calibration files, but one of the simplest is using an online tool like Room EQ Wizard (REW). REW is free software that allows you to measure the response of your headphones or IEMs and generate calibration audio files.

To use REW, you’ll need a microphone and a computer with an audio interface. You’ll also need to download and install REW. Once you’ve done that, open REW and follow the instructions on how to set up your microphone and audio interface.

Can we trust measurements?

As the world progresses, we are increasingly reliant on technology. This is no different when it comes to music listening; we often use headphones or in-ear monitors (IEMs) to enjoy our tunes. But can we trust the measurements of these devices?

There are many factors that can affect the accuracy of measurements, from the type of device being used to the environment in which the measurements are taken. For example, headphones can vary greatly in their response to low frequencies, so a measurement taken with one type of headphone may not be accurate when using another type. Additionally, IEMs are notoriously difficult to measure due to their small size; even slight changes in how they are inserted into the ear canal can affect the results.

 Ultimately, it is important to remember that measurements are only tools. They can provide valuable information, but should not be treated as gospel.


In conclusion, to measure headphones and IEMs, you need a sound level meter, a PC, and some software. The PC will be used to generate pink noise, which is then fed into the sound level meter. The software will be used to measure the response of the headphones or measuring IEMs to the pink noise. Finally, the sound level meter will be used to measure the SPL of the pink ambient noise.