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In Ear Monitor Drivers explained: What are the differences, what driver count means for Custom In Ear Monitors and what that means in real life!


 

fir audio radon6 custom in ear monitor at dakin custom audio
The FiR Audio Radon6 - Using 3 different types of Drivers!

If you're a musician, an audiophile, or simply someone who loves high-quality sound, you might have heard about in-ear monitors (IEMs) and people talking about Drivers and different types being used? The world of IEMs can be both fascinating and also a bit overwhelming and full of jargon, especially when it comes to understanding what different drivers and driver counts mean for your listening experience, wherever you use your In Ears.


So, let's dive into this topic and see what it's all about!


 

What Are Custom In Ear Monitor Drivers?

In Ear Monitor (IEM) drivers are simply the tiny speakers inside your IEMs that convert electrical signals into sound. They are the heart and soul of your listening experience, determining the quality and clarity of the sound you hear. There are a few different types of drivers commonly used in IEMs:



  1. Dynamic Drivers: These are like miniature versions of the speakers you find in home speaker systems or PA. They use a circular diaphragm attached to a voice coil, which moves within a magnetic field to produce sound. Dynamic drivers are known for their ability to produce powerful bass and a warm, natural sound but struggle to produce high frequencies and low frequencies at the same time, so may be a little more low and mid-range focussed!

  2. Balanced Armature Drivers: These drivers are smaller and use a different mechanism to produce sound and are the most common in Custom in Ear Monitors. They are designed to be more precise and are often used to reproduce high frequencies with great clarity. Many high-end IEMs use multiple balanced armature drivers of different shapes and sizes, sometimes combining multiple drivers to cover the full frequency range.

  3. Electrostatic Drivers: These are less common in IEMs but are known for their incredibly detailed and clear sound. They work by using an electrically charged diaphragm that vibrates between two conductive plates, similar to a ribbon microphone. Electrostatic drivers are typically only found in very high-end IEMs the FiR Audio Xenon6 and Radon6 for that extra added sparkle and detail!

All driver types have their own strengths and weaknesses which Manufacturer's use to get their desired sound!


 

fir64Audio A18t custom in ear monitor at dakin custom audioustom in ear monitor at dakin custom audio
The 'Mini Line Array' of Bass and low Mid Drivers in the 64Audio A18t!

Common Applications & Examples:


So you'll most likely see IEMs with usually, 2 or more Balanced Armatures with some kind of crossover to give each driver it's own job.


So for example, the ACS Engage has 2 BA Drivers, one for the lows, and one for the mid & high frequencies. On the other end of the spectrum we have the powerhouse that is the 64Audio A18s with it's 4-way system, that has 18 BA drivers, with 8 Low, 8 Low Mid, 1 high-mid and 1 TIA high driver.


But what if you mix driver types?



 

What are 'Hybrid' Custom In Ear Monitors?


Hybrid IEMs combine different types of drivers within a single earpiece to leverage the strengths of each type. For instance, a common hybrid configuration might include a dynamic driver for bass and balanced armature drivers for mids and highs. This allows the IEM to produce a rich, full sound across all frequencies.


64Audio A4s custom in ear monitor at dakin custom audio

The 64Audio A4s is an IEM which does this really well and does tend to be a great choice for Drummers, Bass & Keys players! Hybrid designs aim to deliver the best of both worlds, offering the warmth and power of dynamic drivers alongside the precision and clarity of balanced armatures.

A great example of hybrid IEMs is the FIR Audio Frontier Series.


These IEMs integrate various driver technologies to achieve their trademark immersive sound. By combining multiple driver types, FIR Audio's Frontier Series delivers robust bass, clear mids, and sparkling highs, providing a balanced and immersive audio experience.



fir audio Xenon6 custom in ear monitor at dakin custom audio

The FiR Audio Xenon6 for example uses a Dynamic Driver for it's Kinetic Bass, 1 BA Low, 2 BA Mid, 1 BA High and an Electrostatic high, making it one of the most advanced IEMS on the market today that is being adopted by many high profile Artists and session musicians!


You can see the Kinetic Bass port inside the Custom In Ear Monitor Shell in the image here!





 

What Does Driver Count Mean in?

When you see an IEM with multiple drivers, it means that the manufacturer has included several tiny speakers inside each monitor, generally each responsible for a specific part of the sound spectrum. For example:


  • Single Driver IEMs: These use one driver to handle the entire frequency range. They can be simpler and more cost-effective but may struggle to produce as rich and detailed a sound as multi-driver models. A great example of a single Dynamic Driver IEM that used the IEM shell to enhance the sound are the FiR Audio Electron Series, E10 & E12.

  • Dual Driver IEMs: These typically have one driver for the low frequencies and another for the mid and high frequencies, offering better clarity and separation.

  • Triple and Quad Driver IEMs: These add more drivers to cover different parts of the frequency spectrum more precisely. For example, one driver for bass, one for mids, and one for highs in a triple-driver setup, or even more specialised drivers in a quad setup.

  • Five or More Drivers: Some high-end IEMs use five, six, or even more drivers to achieve an exceptionally detailed and balanced sound. These models can produce incredible audio quality but come at a higher cost.



 

What Does All This Mean in Real Life?

a professional musician at a wedding show using custom in ear monitor

In real life, the choice of IEMs and their driver configurations can significantly impact your listening experience. But is more, more? Not necessarily! We always advocated trusting your own ears and the best way to understand what works for you is to try them out yourself.


For professional musicians, having a precise and clear sound is crucial for performance. Combinations of multiple drivers and crossovers in Multi-driver IEMs can help ensure that every note and nuance is heard clearly, even on a noisy stage.


For audiophiles, the choice might come down to personal preference. Some might prefer the warmth of a dynamic driver, while others might crave the clarity and detail offered by multiple balanced armature drivers.



Demo custom in ear monitors at a Demo clinic at Dakin Custom Audio

At Dakin Custom Audio, we offer a range of custom IEMs from top brands like 64Audio, FIR Audio, ACS Custom, and Bellos Audio. Come in for a Demo Session and experience the difference for yourself. Our experts will help you find the perfect pair to match your needs and preferences.


Whether you're a seasoned musician, a dedicated audiophile, or someone who simply enjoys great sound, understanding IEM drivers can help you make an informed decision and enhance your listening experience. Visit Dakin Custom Audio today and discover your perfect sound!








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