In-Ear MonitorOverreview

7Hz x Crinacle Salnotes Dioko

The $99 planar everyone measured, half of them loved, and a loud minority regret.

67/ 100
Review score
41 sourcesUpdated
$99Typical US price

Score aggregates reviewer opinions across topics.

7Hz x Crinacle Salnotes Dioko

The short version

What to know.

A lean, neutral-leaning planar tuned with a sub-bass-only shelf and a restrained upper midrange. Sources broadly agree that the midrange is clean and natural, that detail retrieval and instrument separation are exceptional for $99, and that the shell is big, the fit shallow and the build premium out of the box. They split hard on the treble, which measures 7–10 dB above the Harman target in the top octave on every rig and reads as airy to some and as sizzle, glare or an artificial sheen to others; on the tonality, which is either neutral done right or thin and strident; and on whether the mid-bass is tastefully polite or simply missing. Owners add a durability thread the reviewers never saw — units going quiet on one side, cracked glass, failed grilles — and a recurring note that it needs more power than most budget sets.

About this product

The 2022 14.6 mm planar collab, sold as the Salnotes Dioko. Not the 7Hz Timeless, Diablo or Divine. The first ~150 units shipped with the wrong nozzle filters and sound brighter than every unit since; a correct-filter unit is what the graphs and most reviews describe.

Crinacle's first planar collaboration and the first planar-magnetic in-ear to sell for under $100, the Salnotes Dioko arrived in July 2022 as the budget answer to 7Hz's own $220 Timeless: the same class of 14.6 mm driver, an oval aluminium shell with a purple sapphire-glass faceplate, a genuinely good cable and case, and a tuning pitched at his neutral target with a sub-bass shelf rather than the V-shape every other planar wore.

It also had a rocky birth — the first hundred-and-fifty-odd units left the factory with the wrong tuning filters and sounded far brighter than intended — and it has spent four years as the set people either call the best technical bargain at the price or the one they most regret buying. Both camps are real, and the graphs explain a good deal of the argument.

A good fit for

  • Listeners who want to hear what a planar driver does for detail and separation without spending $200
  • Fans of a lean, neutral, midrange-first balance with a sub-bass rumble and no bloat
  • Anyone comfortable with EQ — a shelf above 8 kHz and a little mid-bass is all most owners add
  • Medium-to-large ears that can seal a big, shallow shell

Think twice if

  • You are treble-sensitive or hate sibilance; half the field found the top end fatiguing
  • You want mid-bass punch, slam or warmth without EQ
  • You have small ears or struggle with shallow-fitting shells
  • You plan to run it straight from a phone or laptop jack
  • A long ownership horizon matters more than launch-day value — the owner durability reports are not rare

The reviewer consensus

Agreement &
disagreement.

8 / 12topics divide opinion
4 Mostly agree8 Divided opinions

Common ground6

  • The midrange is clean, uncoloured and natural for most ears, with vocals that never shout
  • Detail retrieval and instrument separation are exceptional for $99 and close to planars at twice the price
  • The bass is a sub-bass-only shelf: fast and clean, but lean in the mid-bass and short on slam

Points of contention6

  • Treble: airy and extended vs sharp, sizzly and glassy — the same 12–14 kHz energy heard two ways, and worse still on the early wrong-filter units
  • Tonality: neutral done right vs lean, thin and strident; a substantial minority would only use it with EQ
  • Comfort: comfortable for hours vs a shallow, insecure fit that never stays sealed — and no fit at all for small ears

A closer listen.

12 topics · 8 divided
Left: criticalRight: positiveTighter lines: more agreement

Bass

Leans criticalMostly agree
Reviewer sentiment26 supporting sources
CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

Most sources call the low end lean: a sub-bass shelf with little mid-bass body, fast and clean but short on slam, weight and decay. A minority — mostly listeners who wanted a planar without the usual bass bloat — like exactly that politeness. Nobody calls it a bass-forward set.

There isn’t much slam, and the kick and floor tom of the drums lack a sense of depth beyond the initial impact.

Fc-Construct, headphones.com

It’s got satisfying planar driver speed but it often feels watered down and lacks impact.

Prime Audio Reviews (David Becker)

Personally I am a fan of the whole low end of the Dioko, at least as far as tuning goes, but I can see others wanting a little more warmth in these lower ranges.

Acho Reviews (SenyorC)

Measured

36 squig.link rigs agree to within a decibel: sub-bass on the Harman IE 2019 target at 20 Hz, but 1–2 dB under it from 40 to 100 Hz and back to level by 200 Hz — a shelf that lives below 100 Hz with no mid-bass lift at all. Taping the front vent adds only 1.6 dB at 20 Hz.

Link to this topic

Follow the evidence

Sources 41

1–6 of 41 sources

Read with context

Limitations & method.

As of

What to keep in mind 7

  1. A read of where the reviews land as of September 2026, four years after launch. Almost every full review dates from July to September 2022 and most of those reviewers had a free unit from Linsoul or a HiFiGo tour; the second thoughts, regret posts and owner reports run through 2026 and are harder on it.

  2. Which unit a reviewer had matters more here than usual: the first ~150 units shipped with the wrong nozzle filters and sound 2–5 dB brighter through the upper midrange. Several of the harshest early verdicts were on those units, and a few reviewers never confirmed which they heard. Anything bought since mid-2022 has the intended filters.

Where to buy Product & retailer links