In-Ear Monitor Headphones: Which Ones Should I Choose?

In-ear monitors (IEMs) are a type of audio device that fits inside the ear, somewhere between the tight seal of headphones and the low profile of earbuds. They are designed to provide clear, direct audio to the wearer and are often used by musicians and performers to monitor a mix of different instruments and vocals during a performance.

IEMs are available at a wide range of prices, from tens of thousands of dollars to a similar price as a regular pair of earbuds. They are also highly customisable, with interchangeable cables and earpieces, and can be custom-moulded to fit the shape of the wearer's ears.

When choosing which IEMs to buy, it's important to consider factors such as sound quality, noise cancellation, comfort, and whether you want a wired or wireless connection.

Wired vs. wireless IEMs

When it comes to choosing between wired and wireless IEMs, there are several factors to consider. Wired IEMs typically offer better sound quality than wireless IEMs, as wires are a more effective means of transmitting data and can provide a more direct connection to the audio source. This results in a more accurate and detailed sound with wired IEMs. Additionally, wired IEMs are often more affordable than wireless ones, as you are not paying for the added convenience and features of wireless technology.

On the other hand, wireless IEMs offer unparalleled convenience and freedom of movement. They are ideal for those who lead active lifestyles, such as runners or workout enthusiasts, as there are no wires to get tangled or restrict movement. Wireless IEMs also often come with a host of features that wired IEMs may lack, such as active noise cancellation, spatial audio, transparency modes, and Bluetooth connectivity. These features can enhance the overall listening experience and make wireless IEMs more suitable for use in various environments.

It's worth noting that the sound quality of wireless IEMs has been improving, and some premium wireless options can now rival the sound quality of wired IEMs. However, the convenience and features of wireless IEMs often come at a higher price point. Additionally, wireless IEMs rely on batteries, which can be a point of failure and may require more frequent replacements or upgrades.

Ultimately, the decision between wired and wireless IEMs depends on your personal preferences and priorities. If you prioritise sound quality and affordability, wired IEMs may be the better choice. However, if convenience, freedom of movement, and advanced features are more important to you, then wireless IEMs might be the way to go.

It's also worth mentioning that hybrid solutions exist, which combine wired and wireless technologies. These options offer the benefits of both worlds, providing a balance between sound quality and convenience.

Budget IEMs

When it comes to budget IEMs, there are a few key things to keep in mind. Firstly, a good pair of budget IEMs should have a wide frequency response, as this will ensure that you get a detailed and dynamic audio experience. Secondly, it is important to consider the type of driver used in the IEMs. Dynamic drivers are powerful and consistent, but may not offer the same sensitivity and detail as other types. Finally, it is worth noting that budget IEMs often have to trade off build quality for sound or vice versa, so it is important to prioritise what is most important to you.

• The SubZero SZ-IEM is designed for both on-stage monitoring and everyday use, with a true 20Hz to 20kHz frequency response and effective sound isolation. They come with a zipped carry pouch and comfortable silicon/memory foam tips, and are compatible with 3.5mm jack devices.
• The Mackie MP-120 BTA is a versatile IEM with both Bluetooth and analogue connectivity, offering up to 40dB of sound isolation. They have a dynamic driver for balanced sound and come with a moulded case and various tips for a comfortable fit.
• The Stagg High-Resolution Sound-Isolating In-Ear Monitors offer a broad frequency response from 7Hz to 40kHz, with dual drivers for precise sound and memory foam earbuds for comfort. They also feature a detachable, tangle-free cable and a foam case for storage.
• The Shure SE112 delivers a high-quality auditory experience with a robust sound profile, blocking up to 37 dB of external noise. They come with multiple ear sleeve sizes and a carrying pouch, making them ideal for on-stage or everyday use.
• The Behringer MO240 packs dual-hybrid driver technology for exceptional sonic accuracy and balance, and effectively blocks unwanted noise. They come with a variety of earbuds and a zipper case for portability.
• The Sennheiser IE 100 Pro Wireless offers the flexibility of wired and wireless connectivity, with dynamic 10mm broadband transducers for precise sound reproduction. They have an ergonomic earmold design and a stable wireless connection, making them ideal for live performances.
• The Mackie MP-220 BTA is a professional set of IEMs with dual dynamic drivers, offering Bluetooth and analogue connectivity and up to 40dB of sound isolation. They are designed for comfort and durability, with an ergonomic, low-profile form factor.
• The Shure SE215 is a great choice for professional monitoring, offering significant isolation from external noise (up to 37 dB). They are equipped with Shure's High-Definition MicroDrivers for enhanced bass and a spacious soundstage, and come with a variety of sleeves for a comfortable and secure fit.

Mid-Range IEMs

If your budget allows for a slightly more expensive pair of IEMs, there are some excellent mid-range options available. Here are some specific models to consider:

• The Shure Aonic 3 offers peerless audio quality, with a simple yet expertly made design and a choice of nine different eartips for superior isolation and comfort. They also feature an in-line remote and mic, making them a great choice for those who prioritise sound quality and functionality.
• The Sony WF-1000XM5 are wireless earbuds that offer class-leading levels of detail and clarity, along with top-notch musicality and timing. They also feature noise-cancelling technology and a range of handy features, making them a great all-round choice.
• The Shure Aonic 5 employs three high-definition balanced drivers for a sophisticated, mature sound with exceptional detail and clarity. They come with a range of tips to ensure a perfect fit and include two extra nozzles to customise the sound balance.

High-End IEMs

For those who are looking for the very best in sound quality and are willing to pay a premium, there are some exceptional high-end IEMs on the market. Here are some specific models to consider:

• The Sennheiser IE 900 is a single dynamic driver IEM that delivers impressively clear and open sound, with the ability to dig deep into the production of a recording. They come with six ear tip options and three cables with different connectors, making them a great choice for audiophiles who want the best audio possible.
• The Bowers & Wilkins Pi8 offers breathtakingly detailed sound with a natural, refined presentation, along with simple and easy-to-use controls. They also feature noise-cancelling technology and support for high-quality wireless playback, making them a top choice for wireless enthusiasts with a high budget.
• The 64 Audio U12t is a perennial favourite among audio enthusiasts, offering a slightly warm, clean tonality with a touch of spice in the upper treble. They deliver superb bass, impactful centre imaging and authoritative macro-dynamics, making them a great choice for those seeking a well-rounded, high-performance IEM.

High-end IEMs

When it comes to high-end IEMs, there are a few options that stand out and offer exceptional audio quality. Here are some recommendations and key considerations:

Sennheiser IE 600s

The Sennheiser IE 600s are often mentioned as a solid choice for high-end IEMs. They offer a premium listening experience and are known for their sound quality and performance.

Moondrop Variations

Moondrop has gained a reputation for producing excellent IEMs, and the Moondrop Variations are no exception. They are praised for their audio quality and are worth considering if you're seeking a high-end option.

Thieaudio Monarch MK III

The Thieaudio Monarch MK III is a top-tier IEM that delivers exceptional sound. They are highly regarded for their audio performance and often recommended for those seeking a high-fidelity listening experience.

Custom Art Music One

If you're looking for your first custom in-ear monitor (CIEM), the Custom Art Music One is an excellent option. They offer a comfortable fit and neutral sound, making them a solid choice for those seeking a natural listening experience.

CIEMs vs. High-End IEMs

When deciding between custom in-ear monitors (CIEMs) and universal IEMs, there are a few key differences to consider. CIEMs provide superior noise isolation due to their custom fit, and they offer consistent sound and comfort. However, they are typically more expensive and require ear impressions, which can be a lengthy process. High-end IEMs, on the other hand, offer more flexibility in terms of sound signature and are generally more accessible.

Directional Audio and Soundstage

If you're a gamer, one important consideration is directional audio and soundstage. Look for IEMs that offer a wide soundstage and precise imaging to enhance your gaming experience.

Bass Performance

For bass-heavy genres like EDM and heavy metal, ensure that the IEMs can deliver powerful and accurate bass reproduction while maintaining clarity in the mids and highs.

IEMs for iPhone

If you're looking for IEMs to use with your iPhone, there are a few things to consider. Firstly, your budget – IEMs can range in price from relatively affordable to very expensive. Secondly, the type of music you listen to and your preferred sound signature. Do you like a lot of bass, or a more balanced sound? Finally, whether you need active noise cancellation (ANC) if you want to block out background noise.

Moondrop Kato

The Moondrop Kato is a popular choice among the audio community and can be driven by the standard Apple Lightning to 3.5mm dongle, so you don't need to invest in a separate amplifier. They offer a well-balanced sound signature and are known for their excellent sound quality, making them a great choice for iPhone users.

Shuoer S12

The Shuoer S12 is another excellent option, with a similar sound signature to the 7Hz Timeless, which is also recommended by the audio community. The S12 can be comfortably driven by the Apple dongle and offers a comfortable design, making it a great choice for extended listening sessions.

Etymotic ER4XR

If you're looking for noise isolation, the Etymotic ER4XR is a good option. They have an ultra-deep fit and provide a unique in-your-head sound experience. However, they may not be suitable for everyone due to their fit, so make sure to try them out before purchasing.

TRI Starsea

If you're looking for something beautiful as well as functional, the TRI Starsea is a great choice. They feature 3D-printed translucent resin shells and offer a high-quality cable. The Starsea has physical tuning switches that allow you to customise the frequency response to your preferences. However, they are on the lighter side of bass, so if you're a basshead, you may find them lacking in rumble.

Moondrop Aria

The Moondrop Aria is another affordable option that doesn't require an amplifier. They provide terrific sound quality for their price point and are known for their clear and crisp audio reproduction.

Tin T3 Plus

The Tin T3 Plus is an affordable option that is easy to drive from an iPhone. They offer a well-balanced sound signature and are known for their excellent sound quality, making them a great choice for iPhone users who don't want to break the bank.

Ikko OH10

The Ikko OH10 is another highly recommended IEM that doesn't require an external amplifier. They offer a unique sound signature and are known for their build quality and comfort, making them a great choice for extended listening sessions.

7Hz Timeless

The 7Hz Timeless is a planar magnetic IEM that offers a pleasant tonality and excellent technical performance, including great clarity. They are competitively priced and have become a popular choice for audio enthusiasts.

Sennheiser IE 900

If you have a higher budget and are an audiophile who prioritises sound quality, the Sennheiser IE 900 is an excellent choice. They are wired IEMs that offer a detailed and articulate sound, with a refined yet entertaining presentation. They come with a variety of ear tips and cables, ensuring a comfortable and secure fit. However, they do not have an in-line remote, which may be a consideration for some users.

Sony WF-1000XM5

If you're looking for wireless IEMs, the Sony WF-1000XM5 is an excellent choice. They offer class-leading levels of detail and clarity, along with top-notch musicality and timing. They also feature active noise cancellation (ANC) and have a comfortable, discreet design, making them perfect for everyday use.

Shure Aonic 3

The Shure Aonic 3 is a wired option that delivers peerless audio quality for its price point. They offer a dynamic and musical sound, with excellent rhythm and timing. They come with a variety of ear tips to ensure a comfortable and secure fit, and they include an in-line remote and mic for added convenience.

IEMs for bass-heavy genres

If you're a fan of bass-heavy genres, there are plenty of IEMs out there that will give you that extra kick you're looking for. Here are some recommendations for bass-heavy IEMs at various price points.

Under $100

The QKZ x HBB Khan is an excellent choice for bass-heavy sound without breaking the bank. It delivers a punchy mid-bass that will satisfy your craving for low-end impact while maintaining a flat and natural presentation in the high bass and high mids. Kick drums will come through with a slamming excitement, making these IEMs a great value option for audiophiles who want to feel the bass without sacrificing sound quality.

Under $250

Final Audio E5000 IEMs offer a warm and creative sound with a focus on the bass. With a smooth and velvety texture, these IEMs bring subs, mid-bass, and high bass to the forefront. While the upper frequencies are lighter in amplitude, the E5000 provides ample detail and resolution, resulting in a unique and ethereal soundstage. The "bullet" shape also ensures a simple and comfortable fit.

Under $500

The iKKO Asgard OH5 IEMs are a unique offering with their triangular shape and lithium diaphragm dynamic driver. They deliver a full and rich sound with rumbling subs, punching mid-bass, warm high bass, and a rich midrange. The bass is intense and in-your-face, creating an aggressive and intimate listening experience. If you're looking for a booming IEM with a one-of-a-kind character, the Asgard OH5 is a great choice.

Under $1000

The Sennheiser IE 600 IEMs offer a bright and bassy sound signature, also known as a "V-shaped" signature. They deliver tight and twangy treble alongside thunderous sub-bass and kick drums. The IE 600 provides accurate and articulate imaging, an immersive soundstage, and a durable metallic build. At just under $1000, these IEMs offer exceptional bass performance and overall sound quality that rivals more expensive options.

Over $1000

If you're looking for the absolute best bass response and money is no object, consider the 64 Audio Fourte Blanc IEMs. With incredible low-frequency depth, these IEMs deliver unrelenting impact, body, and lush detail. The bass is theatrical and gripping, making them a top choice for those seeking the ultimate bass experience, regardless of cost.

Other notable mentions in the premium category include the Kinera Imperial Loki, which offers a smooth and warm timbre with rich bass detail, and the Sennheiser IE 900, which provides a detailed, articulate sound with a confident and insightful performance.

Frequently asked questions