Sleeping
Concerts
Motorcycle
Swimming
Work
Kids
On stage
In the studio
Rehearsals
Writing music
Mixing at home
Daily commute
Long journeys
Listening at home⏱️ Estimated reading time: 15 min
On this page: Overview
Key Takeaways
Singers use in-ear monitors to hear their own voice clearly, at the same balance in every venue, without wedge spill or feedback. The earpiece seals out much of the stage sound, and a good seal lets you listen at a lower volume.
Usually to hear the room, or because the mix feels dry. 64 Audio notes that one earpiece out costs about 6 dB of perceived loudness, so most performers turn the other side up. Asking for a stereo mix with a little ambience from the audience mics works better.
The seal traps the low end of your own voice, the part that travels through the bones of your head, so it sounds louder and boomier than it does in the open room. A deeper or custom seal and a little low cut on your vocal in the in-ear mix change it for many singers, though it rarely disappears completely.
Start with universal fit, which all 12 of our Unique Melody IEMs come in. Custom fit costs £300 more on six models, including the MEXT at £1,289, from a 3D ear scan or ear impressions, delivered 3–4 weeks after we receive your scans, with a free refit if the fit is not right. The 3DT and MEST MKIII CF Blue are universal only.
Singers want clear mids, gentle treble on sibilance, a seal that holds while singing and a 3.5 mm plug. In our range that means the 3DT (£359), the MEXT (£989 universal, £1,289 custom) and the MEST MKIII CF Blue (£1,729, universal only).
Search for in ear monitors for singers and you mostly find pick lists of earpieces priced in dollars. A vocalist needs something narrower: your own voice in tune, a reason why it booms once the seal goes in, and a better answer than the earpiece dangling over your shoulder mid-set.
On forums, singers describe the same first night on in-ears. They could not hear themselves, so they pushed, and then drifted sharp or flat. Engineers reply just as consistently that the pitch problem is usually a mix problem, not an ear problem. For the hardware basics, what are in-ear monitors covers the parts and the terms, and in-ear monitors for musicians covers the rest of the band.
Whether a vocalist should wear earplugs or in-ears in a loud room is a separate question from monitoring. Our guide to earplugs for singers answers it for rehearsals, gigs and load-in, where many vocalists have no personal mix at all.
At Bollsen, we are a UK and EU hearing company trusted by 1,000,000+ people, and we are the official UK and EU partner of Unique Melody, the Chinese IEM maker. We sell both earplugs and in-ears, so we will tell you plainly what each one does and does not do.
Why do singers use in-ear monitors?
Singers use in-ear monitors because a sealed earpiece puts the same personal mix, with their own voice on top, in their ears at every venue, instead of a floor wedge that sounds different in every room, spills into the vocal mic and feeds back when they walk in front of it.
The seal is what makes it work. In Mix’s report on the quiet stage, audiologist Michael Santucci explains that a good in-ear monitor depends on the earpiece sealing out external sound, because if it cannot, you have to turn the signal louder to hear it over the stage. Put simply, a good seal lets you listen at a lower volume.
With no wedge firing back into the microphone, the engineer can also give you more of your own voice before feedback starts, and your mix follows you across the stage.
How do you hear your own voice in tune through IEMs?
You hear your voice in tune when your vocal sits clearly on top of the in-ear mix, you have one dependable pitch reference such as keys, rhythm guitar or a backing vocal, and the mix runs in stereo with sources panned apart, so nothing masks the notes you are tuning against.
Singers often ask for “more me” until the vocal is by far the loudest thing in the mix, and still drift, because the keyboard they pitch from is buried under the drums. Pick one reference instrument, tell the engineer, and make sure you hear it clearly against your voice.
Two small requests make a big difference. Ask for a little low cut on your vocal in your in-ear mix (not front of house), which takes some of the boom out of the earpiece. Then ask for a touch of reverb, so your voice does not sound dry and pinned to the inside of your head, and let the engineer pan the band left and right to leave the centre for you.
If you sing on a headset mic
Check that the headset’s ear hook and boom clear the IEM shell before the gig, not during it. Route the headset cable and the IEM cable separately behind each ear, so one does not drag the other and break the seal when you turn your head.
Why does your voice sound boomy in IEMs?
Your voice sounds boomy in IEMs because of the occlusion effect. When the seal closes the ear canal, the low-frequency part of your own voice that travels through the bones of your head can no longer escape, so you hear it louder than you would in the open room.
Writing for Hearing Health Matters, Marshall Chasin on earmould impressions for in-ear monitors describes the occlusion effect as a measurable increase in low-frequency sound from your own voice, as great as 20 dB in the low frequencies. Singers hear it as a hollow, “head in a bucket” sound, and some start singing more quietly to make the bass in their head go away, which is the last thing you want on stage.
You can hear it for yourself by putting a finger in each ear and humming. Chasin notes that custom earpieces made from impressions taken past the second bend of the ear canal, into its bony part, give less occlusion, at some cost in bass. A lab model by Stenfelt and Reinfeldt on the occlusion effect found that even deep ear-canal occlusion still produced a noticeable effect, so a deeper seal changes the boom rather than removing it.
On a universal fit, tip depth, a different tip and the low cut on your vocal usually make the biggest difference. If the earpiece feels pressured as well as boomy, why IEMs feel pressured or boomy covers the fit side. The bone-conduction drivers in some of our models are a separate thing: sound sources in the earpiece, unrelated to the bone-conducted sound of your own voice.
Should you take one in-ear out to hear the room?
Taking one in-ear out to hear the room is a common habit, but it breaks the stereo mix and makes you turn the other side up, so the better answer is to ask for ambience mics (audience mics) blended into your mix and a proper stereo image instead.
64 Audio’s note on wearing only one in-ear puts a number on it. When you take one earpiece out, you lose about 6 dB of perceived loudness, and most musicians turn the volume up by about 6 dB to compensate. Its suggested fixes are the ones singers end up asking for anyway, a stereo mix, panning, and ambience mics to put some dimension back into the mix.
Singers usually pull an ear because the mix feels dry and cut off from the audience, and worship engineers answer the same complaint with congregation mics. Monitor engineer Paul Owen adds a caveat in the same Mix piece: no seal is complete, so ambient mics raise the ear-canal level; add them slowly once the fit is right.
How loud an in-ear mix should be, and for how long, is a listening-level question rather than a monitoring one. Our guide to safe headphone volume covers it, and it applies to an in-ear mix the same way it applies to everyday headphones. For what in-ears do and do not do for your ears, read do in-ear monitors protect your hearing?
Universal or custom IEMs for singers?
Most singers should start with universal fit, which seals with interchangeable ear tips, and move to custom fit, moulded to their own ears, once they sing long sets regularly, because singing moves the jaw and the ear canal and a universal tip can lose its seal halfway through a song.
All 12 of our Unique Melody IEMs come in universal fit. Custom fit is offered on six of them, always for £300 more: MEXT (£1,289), MEST MKII (£1,649), MEST Jet Black (£2,099), MEST Fortune (£2,729), The Multiverse Mentor (£4,349) and Mason FS (£7,949). The 3DT and the MEST MKIII CF Blue are universal only.
The UK custom route is short. We email you our 3D-scan guide, a hearing specialist near you takes a 3D ear scan or ear impressions (usually charged separately), and the pair is delivered 3–4 weeks after we receive your scans, with a free refit if the fit is not right. Custom pairs are made to order, so there is no change-of-mind return on custom fit.
Starting universal also teaches you what you want from a vocal mix before you commit to a mould. The wider trade-offs are covered in universal vs custom IEMs.
Which in-ear monitors suit singers?
In-ear monitors suit singers when they have clear, natural mids where the voice lives, treble that does not exaggerate sibilance on “s” and “t” sounds, a fit that keeps its seal while you sing, and a 3.5 mm plug that goes straight into a bodypack. In our range, three models cover that at three budgets.
The tiers are our editorial fit by attribute, using our own product pages’ wording, not reviewer verdicts.
| Budget | Model | Why it suits a singer (our product page) | Fit | Plug at the pack |
|---|---|---|---|---|
| Entry | 3DT (£359) | “Natural and lively”, all-dynamic and easy to drive; a lively 3–5 kHz region can sound forward to sensitive ears | Universal only | 3.5 mm as standard |
| Mid | MEXT (£989 universal / £1,289 custom) | “Smooth, warm vocals” | Universal or custom | 3.5 mm option |
| Upper | MEST MKIII CF Blue (£1,729) | “Natural, present vocals” and relaxed treble; sensitive to ear tips | Universal only | 3.5 mm option |
All three can be ordered with a 3.5 mm plug, so none needs an adapter at a standard bodypack. Compare all 12 models, with fit, plugs and prices, on our Unique Melody in-ear monitors (UK) page before you choose.
3DT: the entry point
The 3DT (£359) uses three dynamic drivers, two 7 mm composite-diaphragm drivers for bass and one 10 mm carbon-nanotube driver for mids and treble, in a CNC-machined stabilised-wood shell. It runs at 25.4 Ω and 113 dB at 1 kHz and ships with a silver-plated copper cable ending in 3.5 mm. Our product page is open about the catch for singers: a lively 3–5 kHz region that can sound forward to sensitive ears, and a shell that suits medium to large ears best.
MEXT: the step to custom
The MEXT (£989 universal, £1,289 custom) combines one dynamic driver, four balanced armatures and one bone-conduction driver (200 Hz–7 kHz) in an ergonomic resin shell, at 16 Ω and 108 dB at 1 kHz. Its product page describes smooth, warm vocals from the balanced armatures, which suits a bright or edgy voice. It is also the lowest-priced custom-fit model we sell, so it is the usual step for singers doing long sets.
MEST MKIII CF Blue: built around voices
The MEST MKIII CF Blue (£1,729, universal only) has ten drivers: one dynamic, four balanced armatures, four electrostatic and one silver-palladium piezo bone-conduction driver (500 Hz–16 kHz), in a carbon-fibre shell at 14 Ω, with sensitivity not stated. Our product page sums up independent reviews as the most balanced, vocal-friendly MEST, with natural, present vocals and relaxed treble. It is very sensitive to ear tips because the nozzle is fairly wide, so try several before you judge the sound.
All Unique Melody models are sold on pre-order. Universal fit arrives by DHL Express in 5–7 working days with 14-day returns while the hygiene seal is unbroken, every pair carries a 2-year Bollsen warranty, and prices include UK VAT.
What should you check before your first gig on in-ears?
Before your first gig on in-ears, check the seal in a quiet room, agree a vocal-on-top mix and one pitch reference at soundcheck, and keep both earpieces in before you add any ambience, because each step only works once the one before it is right.
- Seal first. Listen for full bass. If it sounds thin, change the tip or reseat the shell before anyone touches the volume.
- Your voice and one reference. Vocal on top, then the instrument you pitch from, then only as much band as you need.
- Low cut and a little reverb. On your vocal, in your in-ear mix only.
- Both ears in. If you miss the room, ask for the ambience mics instead of pulling an earpiece.
- Cable routing. Over the ear, down behind the neck and clipped to your clothing, so a tug does not pull the earpiece out.
Give yourself a few rehearsals on in-ears before the first show; the bubble feeling usually fades once the mix and fit are right.
IEMs are not hearing protection; for load-in, rehearsal and crowd noise take Music SoundPRO earplugs. They cost £29.95, have a passive SNR of 24 dB, are made of hypoallergenic silicone, sit flush in the ear and last up to 100 uses.
If your ears keep ringing after a gig or a rehearsal, see your GP, and read the NHS guidance on tinnitus in the meantime.
Most vocal problems on in-ears come down to the seal and the mix. Get your voice on top with one pitch reference you trust, keep both earpieces in, and ask for ambience when the mix feels dry.
Start universal with the 3DT, move to a custom MEXT when long sets start testing the fit, and keep earplugs in the gig bag for everything that happens before the show. For the drummers, bassists and keys players around you, in-ear monitors for musicians covers the rest of the stage.
His connection to hearing protection stems from personal experience with sound sensitivity during live events and work in noisy environments, an issue that made him more aware of the long-term risks of unmanaged noise exposure. Today, as both a communicator and a user of BOLLSEN products, he is passionate about raising awareness around the importance of proactive hearing care.
At BOLLSEN, he develops data-driven marketing campaigns, writes SEO-focused articles, and manages communication channels that connect customers with practical knowledge about hearing protection. His work ensures that BOLLSEN’s message—prioritizing health, performance, and sustainability reaches a global audience in an engaging and trustworthy way.
Passionate about writing since childhood, Timotej combines creativity with a strong analytical approach, continuously testing new ideas in digital marketing, performance advertising, and social media. He believes in learning through innovation and collaboration, balancing leadership with openness to new perspectives.
Beyond his professional role, Timotej is committed to a healthy lifestyle and finds inspiration in fitness, sports, and quality time with friends. His personal passion for well-being aligns with BOLLSEN’s core values, making his work not only a career but also a cause he deeply believes in.
