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Listening at home⏱️ Estimated reading time: 13 min
On this page: Overview
Key Takeaways
How much should you spend on IEMs? For most people, £150 to £500 buys a first serious pair, and spending more buys variety, materials and options rather than a matching jump in sound. Our own range runs from £179 to £7,649, so we see the whole ladder every day.
At Bollsen, we are a family-owned company from Ljubljana and the official UK and EU partner of Unique Melody. That means we sell from the entry tier to the art-piece tier, and we have no reason to push you up it. If you are new to the category, what are in-ear monitors covers the basics first.
Ask on audio forums where the extra money stops paying off and you get a wide spread of answers. A common view in headphone forum threads is that returns diminish as the price climbs, and that the effect is strongest at the very top. Below we go tier by tier, in pounds including VAT, and say what each step adds and what it does not.
How much do in-ear monitors cost in the UK?
UK in-ear monitor prices fall into five rough tiers: under £150 (mass-market single-driver models), £150 to £500 (a first serious pair), £700 to £1,400 (more driver types and plug choice), £1,700 to £2,500 (10 to 12-driver flagships) and £4,000 and up, where craft and materials lead. Each band is defined by what it adds, not by brand.
Our range does not fill every band. No Unique Melody model sits between £359 and £719, between £1,349 and £1,729, or between £2,429 and £4,049. We would rather show those gaps than stretch a tier to hide them.
What changes as you move up the price tiers?
As you move up, the driver count per side rises from 1 to 13, new driver families arrive (bone conduction from £989, electrostatic from £1,349), shells move from resin and wood to titanium, carbon fibre and ceramic, and plug choice and custom fit appear. Sound quality does not rise in step with the price.
| Tier (our models, universal price) | Typical driver set per side | Shell / build | Fit options | Plug | What you gain | What you don’t |
|---|---|---|---|---|---|---|
| Under £150 (no Unique Melody model) | Usually 1 dynamic driver | Varies by brand | Universal | Usually 3.5 mm | A tuned sound for little money when the tips seal | Driver variety, premium shells, plug choice, custom fit |
| £150–£500: From The Start £179, 2HT £279, 3DT £359 | 1 dynamic; 1 dynamic + 1 balanced armature; 3 dynamic | Blue resin with hand-painted faceplate; stabilised wood | Universal only | 3.5 mm (2HT, 3DT); 4.4 mm balanced only (From The Start) | Careful tuning, a better build, detachable 2-pin cables | Plug choice, bone conduction, custom fit |
| £700–£1,400: Stardust £719, MEXT £989, MEST MKII £1,349 | 6 to 8: dynamic + balanced armature, with bone conduction (MEXT, MKII) and 2 electrostatics (MKII) | 3D-printed titanium; ergonomic resin; one-piece carbon fibre | Universal; custom on MEXT and MKII (+£300) | 3.5 mm, 4.4 mm or 2.5 mm balanced on all three | New driver families, plug choice, the first custom option | A guaranteed better sound for your taste |
| £1,700–£2,500: MEST MKIII CF Blue £1,729, MEST Jet Black £1,799, Maven III Moonshard £1,979, MEST Fortune £2,429 | 10 to 12, with electrostatics and bone conduction on all four | Carbon fibre; zirconia ceramic; polished metal; Purple or Red shell | Universal; custom on Jet Black and Fortune (+£300) | Three plugs (MKIII, Jet Black); 4.4 mm only (Maven III, Fortune) | Refinement, rarer materials, more drivers per frequency band | A wholesale change from the tier below |
| £4,000+: The Multiverse Mentor £4,049, Mason FS £7,649 | 13: 12 balanced armature + 1 bone conduction, 5-way | Carbon fibre with ceramic inner frame; CNC-carved and hand-finished | Universal or custom (+£300) | 4.4 mm balanced only | Craftsmanship, a 12-armature design with bone conduction, collector appeal | A sound gain in proportion to the price |
Are budget IEMs under £150 any good?
Yes, many budget IEMs under £150 are good, especially well-tuned models with a single dynamic driver and a choice of ear tips. Brands such as Moondrop and 7Hz sell many models here, and in our view the best of them are a clear step up from the earphones that come in the box with a phone.
Price is not a reliable guide on its own. Which?’s guide to buying headphones notes that pricier models generally use higher-quality materials, but that dear parts do not make up for poor design. It reports Don’t Buy models costing more than £200 and great ones under £100.
We sell nothing in this tier, so we have no pick list to offer. Our range starts at £179.
What does £150 to £500 buy you?
Between £150 and £500 you get a first serious pair: From The Start at £179 (1 dynamic driver, 4.4 mm balanced cable only), the 2HT at £279 (a hybrid of 1 dynamic and 1 balanced armature, 3.5 mm) and the 3DT at £359 (3 dynamic drivers, 3.5 mm). All three are universal fit only.
Here, you are paying for tuning and build. The 2HT and 3DT use CNC-machined stabilised wood shells, and the 3DT’s figures are published (25.4 Ω, 113 dB at 1 kHz). From The Start needs a 4.4 mm source, so a phone needs a 4.4 mm dongle DAC.
Our guide to the best IEMs under £500 goes model by model through the entry range. It also covers which source each one needs.
What do you gain between £700 and £1,400?
Between £700 and £1,400 you gain new driver families and choice: Stardust (£719) has 6 drivers per side (2 dynamic + 4 balanced armature) in a 3D-printed titanium shell, MEXT (£989) adds a bone-conduction driver, and MEST MKII (£1,349) brings 8 drivers including 2 electrostatics. The cheapest of the three costs twice as much as the 3DT.
This is also where you first choose your plug: 3.5 mm, 4.4 mm or 2.5 mm balanced on all three. And the MEXT and MKII are the first models in the range offered in custom fit. Stardust stays universal only.
More drivers here mean more ways to split the frequency range, not automatically better sound. Whether the extra texture matters depends on how and where you listen.
What do £1,700 to £2,500 flagships add?
The £1,700 to £2,500 flagships add driver depth and rarer materials: MEST MKIII CF Blue (£1,729) has 10 drivers including 4 electrostatics in a carbon fibre shell, MEST Jet Black (£1,799) uses zirconia ceramic, Maven III Moonshard (£1,979) has 12 drivers, and MEST Fortune (£2,429) carries 3 bone-conduction drivers. All four have electrostatic and bone-conduction drivers.
Expect refinement rather than reinvention. Reviewing the Jet Black, Headfonics describes its frequency response as “a gradual evolution compared to the likes of the MKII, rather than introducing wholesale changes” on paper. In our view, that is the shape of this tier: a step in polish, not a new kind of sound.
Driver count is the headline number at this level, but it is not the whole story. Our explainer on how many drivers an IEM needs looks at why a bigger driver count does not simply mean better sound.
What are you paying for above £4,000?
Above £4,000 you pay mainly for craft and materials: The Multiverse Mentor (£4,049) and Mason FS (£7,649) each use 13 drivers per side, 12 balanced armatures plus 1 bone-conduction driver, with a 5-way crossover and a 4.4 mm balanced cable only. Both come in universal or custom fit.
The Mentor pairs a carbon fibre shell with a ceramic inner frame. The Mason FS shell is CNC-carved and hand-finished. Whether they sound better to you than a £1,729 flagship is a matter of taste, and we would not promise otherwise.
How much more does custom fit cost?
Custom fit costs exactly £300 more than universal fit, on six models: 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. From The Start, 2HT, 3DT, Stardust, Maven III and MEST MKIII CF Blue are universal fit only.
After you order, we email our 3D-scan guide, and a hearing specialist near you takes a 3D ear scan or ear impressions, usually charged separately. Your IEMs arrive 3–4 weeks after we receive them, with a free refit if the fit is not right. Custom fit is made to order, so there is no change-of-mind return.
In our view, most people should live with a universal pair first and only then decide on custom. For the full trade-off on seal, comfort and resale, see universal vs custom IEMs.
What is in a UK price?
A UK price from us includes UK VAT, which the GOV.UK VAT rates page sets at a standard rate of 20%. It also includes free DHL Express delivery to the UK and EU, duties paid. All models are sold on pre-order, and universal fit arrives by DHL Express in 5–7 working days.
Every pair carries a 2-year BOLLSEN warranty, handled by our UK and EU team. Universal fit can be returned within 14 days as long as the hygiene seal is unbroken. As GOV.UK’s guidance on returns and refunds explains, custom-made items are excluded from change-of-mind refunds, and a warranty sits on top of your legal right to a repair or replacement.
You can compare every model and its terms on our Unique Melody in-ear monitors (UK) page, where fit and plug options are shown per model.
Where do diminishing returns start?
In our judgement, diminishing returns start well before the flagships for most listeners: the biggest jump is from a poorly sealing budget pair to a well-tuned first serious pair, and above roughly £500 extra money mostly buys driver variety, materials, plug choice and fit options. That is our view, not a measurement.
Crinacle’s In-Ear Fidelity rankings are a useful check. They give the 2HT, MEXT and MEST MKII the same tonality grade (B+), while the dearer two score higher for technical performance (A- against B+). The 2HT also earns a two-star value rating, “Redefines the price bracket”.
Crinacle stresses that the ranks are “NOT according to price-to-performance value”, so read them as one reviewer’s ranking, not a verdict on value. Still, a shared tonality grade across a £279 and a £1,349 model says a lot about where the gains go.
Are expensive IEMs worth it for you?
Whether expensive IEMs are worth it depends on how you listen, not on the price tag. A commuter using a phone gets most of the benefit from a £279 to £359 pair with a good seal (the £179 From The Start has a 4.4 mm plug, so a phone needs a 4.4 mm dongle DAC). A home listener with a balanced player has more reason to step up to three plug options and new driver types.
Stage musicians who wear IEMs for hours on most weeks are the people custom fit is for. Collectors buy the £4,000 tier for craft, and that is a fair reason too.
Before spending more, check the fit. Trying a different size or type of ear tip is the cheapest upgrade there is, and a pair that does not seal will sound thin at any price.
So how much should you spend on IEMs?
Spend £150 to £500 on a first serious pair unless you already know what you want more of. Step up to £700 to £1,400 for bone conduction, electrostatics or plug choice, and to the flagships only if refinement and materials matter to you.
Custom fit adds £300 on six models and suits people who wear IEMs every week. If you are still deciding between models rather than tiers, how to choose in-ear monitors in the UK walks through drivers, plugs and budgets. When you have a tier in mind, we are happy to help you find the pair that suits your ears.
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.
