In-Ear MonitorOverreview

Moondrop MAY

The IEM with a DAC in its cable — universally comfy and endlessly tweakable, and quietly divisive on bass, treble air, and Moondrop's QC.

11 sourcesUpdated
$65Typical US price

Score aggregates reviewer opinions across topics.

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Moondrop MAY

The short version

What to know.

Moondrop's MAY is a ~$65 hybrid IEM — a 10 mm sapphire-plated dynamic driver plus a 6 mm annular planar — bundled with a USB-C 'FreeDSP' cable that puts a small DAC and a 9-band parametric EQ (driven by the Moondrop Link 2 app) right on the cable, presets stored on-device. Reviewers agree on the core: an exceptionally comfortable, small shell that fits almost anyone; a safe, sub-bass-focused Moondrop house tuning that measures within ~2–3 dB of target; a natural, vocal-forward midrange with standout female-vocal timbre; good passive isolation from the deep fit; and effortless drivability off any USB-C device. The clever part is the versatility — a two-in-one package where both the IEM and the reusable DSP cable stand on their own. The disagreements are where it gets interesting. Bass quantity splits reviewers between 'big, potent, basshead-level' and 'substantial but safe sub-bass — satisfying, not a basshead set.' Treble divides 'smooth, refined and non-fatiguing' from 'safe to the point of dark, short on air and sparkle.' Technicalities are genuinely contested — one reviewer calls it 'technically stellar,' others 'middling' and average for the class. Build cuts both ways: a premium-feeling shell and a lovely cable, against Moondrop's recurring QC reputation (a scratch-prone mirror faceplate, DSP-cable hiss on some sources, and the occasional dead cable). And value is argued too: an easy two-products-in-one at $65 to editorial reviewers, a harder sell to a crowded sub-$100 field for the community — narrowed by its DSP-only, no-3.5 mm design. It's also very much an EQ-first set: it's designed to be tuned, so its stock sound isn't the whole story.

About this product

The 2024 MAY — a two-driver hybrid (a 10 mm sapphire-plated dynamic for the lows and mids, a 6 mm annular planar magnetic driver for the treble, on a 2-way crossover) in a small resin shell with a mirrored metal faceplate. Its defining feature is the bundled USB-C 'FreeDSP' cable: an integrated DAC plus a 9-band parametric EQ set from the Moondrop Link 2 app, with the chosen preset stored on the cable. The 0.78 mm 2-pin is detachable, so the MAY also runs on any ordinary cable and the DSP cable works on other 2-pin IEMs. Not a passive-only set, and not the later gamer-focused Moondrop Ray (the same drivers in a different colour with its own app).

Moondrop's MAY pairs a 10 mm sapphire-plated dynamic driver with a 6 mm annular planar for the treble, then ends the cable in a USB-C plug carrying an integrated DAC and a 9-band parametric EQ you drive from the Moondrop Link app — presets baked onto the cable itself. At roughly $65 it's one of the more interesting 'just plug it into your phone' sets, and because the 0.78 mm 2-pin is detachable, the DSP cable moonlights on your other IEMs while the MAY runs on any ordinary cable.

Reviewers broadly land on safe, comfortable, and clever. The tuning is classic Moondrop house sound — a sub-bass-focused near-neutral that measures close to target — and the fit draws near-universal praise. But the MAY is quietly polarizing where it counts: how much bass there really is, whether the smooth treble reads as 'refined' or 'dark,' how resolving it is for the money, and whether Moondrop's QC (a scratch-prone mirror faceplate, DSP-cable hiss, the odd dead cable) undercuts an otherwise likeable package.

A good fit for

  • Phone and laptop users without a headphone jack who want plug-and-play USB-C sound plus an inline mic
  • Listeners who want a comfortable, non-fatiguing, vocal-friendly all-rounder they can EQ to taste from the cable itself
  • Tinkerers who'll actually use the reusable DSP cable and its presets across other IEMs
  • People who prize all-day comfort and a warm, safe signature over analytical sparkle

Think twice if

  • You want maximum resolution, air and treble sparkle straight out of the box
  • You won't fuss with an app (mind the flat-preset-out-of-box gotcha) or you need a 3.5 mm / balanced option
  • You're sensitive to hiss, or you want dependable QC — the DSP cable can whir on some sources and Moondrop durability is a known gamble
  • You already own a strong sub-$100 set (Hexa, EA500 LM, EW300, ZERO:RED) — the sonic upgrade is small

The reviewer consensus

Agreement &
disagreement.

5 / 12topics divide opinion
comforttonalitymidssoundstageimagingdynamicsisolationbasstrebledetailbuildvalue
1 Strong agreement6 Mostly agree5 Divided opinions

Common ground5

  • Exceptional comfort: a small, light, low-profile shell many call one of the comfiest IEMs they've worn — secure enough to wear all day or to sleep.
  • A safe, balanced Moondrop house tuning — a sub-bass-focused near-neutral that measures within ~2–3 dB of target — with no shout or harshness.
  • A clean, natural, vocal-forward midrange; female-vocal timbre is a recurring favourite, with no planar 'sharpening.'

Points of contention5

  • Bass quantity: 'big, potent, basshead-level' vs 'substantial but safe sub-bass — satisfying, not a basshead set' (the quality is liked either way).
  • Treble: 'smooth, refined and non-fatiguing' vs 'safe to the point of dark — short on air, sparkle and extension.'
  • Detail/technicalities: 'technically stellar, resolves like a pricier set' vs 'middling — average resolution for a good sub-$100 IEM.'

A closer listen.

12 topics · 5 divided
Left: criticalRight: positiveTighter lines: more agreement

Bass

Leans positiveDivided opinions
Reviewer sentiment8 supporting sources
CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

Well liked in quality — a clean, sub-bass-focused low end with good extension and tactility that doesn't bleed into the mids. Quantity is where reviewers split: one camp hears it as big, potent and basshead-level, while another hears a substantial-but-safe sub-bass shelf — plenty of slam for most, short of a true basshead tuning. A minority of critics find it merely 'safe.' Seal and tips move it, since the lift is sub-bass-led rather than mid-bass-boomy.

Measured

ASR's 711-coupler measurement shows a sub-bass-leaning shelf that tracks Amir's target closely; Audio Discourse describes the bass as 'slightly above neutral with a … focus on sub-bass,' and Bedrock hears 'excellent sub-bass extension' with 'average bass texture' — a sub-bass tilt more than a mid-bass thump, which is why the 'basshead' vs 'safe' read tracks how much sub-bass a given listener wants.

Where it splits
Big, potent, basshead-level low end.45%

“I would define it as a basshead level of bass rather than bass for neutral enjoyers.”

Headfonics (Kurt)
Substantial but safe sub-bass — satisfying for most, not a basshead set.55%

“Although this isn’t a basshead IEM, most listeners should be satisfied with the amount of slam and impact.”

Prime Audio
Link to this topic

The hardware

Specifications.

Checked

Design

Type
In-ear monitor
Drivers
1 × 10 mm dynamic (sapphire-plated diaphragm) + 1 × 6 mm planar magnetic (annular planar magnetic driver)1DD + 1Planar

Electrical

Impedance
30 Ω
Sensitivity
120 dB/V≈ 104.8 dB/mW
Frequency response
7 Hz – 39 kHz

Connection

Cable
Detachable
Connector
0.78 mm 2-pin
Plugs supplied
USB-C (DAC in plug)

Manufacturer-published figures, not measurements · from moondroplab.com.

Follow the evidence

Sources 11

1–6 of 11 sources

Read with context

Limitations & method.

As of

What to keep in mind 5

  1. This is a read of where the reviews land as of July 2026, in a budget-IEM bracket that moves fast — the Truthear Hexa, Simgot EA500 LM/EW300 and KEFINE Klean come up constantly as cross-shops and shift the value picture.

  2. The MAY is built to be EQ'd, so its stock sound isn't the whole story — one measurement even found a flat preset loaded out of the box instead of the advertised standard tuning, so check the app and tip-roll before judging it.

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