In-Ear MonitorOverreview

7Hz Timeless II

The planar that started the craze, retuned four years on — agreed on its detail and build, still arguing about its treble, its bass, its fit and whether it's still the one to buy.

68 sourcesUpdated
$229Typical US price

Score aggregates reviewer opinions across topics.

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7Hz Timeless II

The short version

What to know.

A $229 single 14.5 mm planar IEM, the retuned successor to the set that started the budget-planar craze. Measured on 19 rigs it is bass-lifted a little above the Harman target, with an early ear-gain peak, a dip at 4–6 kHz and a large upper-treble shelf; the four nozzles mostly trim the upper mids and treble. Most sources agree on its strengths: detail and speed that punch above the price, precise imaging, a wide and fairly tall stage, and a premium metal package with a genuinely useful set of nozzles and a modular cable. Four arguments run through everything else. Treble: airy and non-fatiguing to most, bright or sibilant to the treble-sensitive, blunt to a couple — and it moves with nozzle, fit and unit. Bass: among the best planar bass to most, short on rumble or loose to a minority that traces largely to seal and source power. Fit: the coin shell and short nozzle suit some ears for hours and hurt others within half an hour — sources split almost evenly. Build and value: the metalwork is praised, but owners report dead channels, a cracked housing and fussy nozzles, and many now point to cheaper or newer planars that do most of what it does. A technical, tunable, bright-leaning planar that rewards tip-rolling and a decent source — not a warm, fits-everyone default.

About this product

The second-generation Timeless: a single 14.5 mm planar-magnetic IEM (up from the original's 14.2 mm) in the same coin-shaped aluminium shell, now with four swappable tuning-nozzle pairs (two flat/'flower' and two dome/'bullet', in gold and silver), a modular cable with 3.5 mm and 4.4 mm plugs, and 0.78 mm 2-pin sockets in place of the original's MMCX. Not the original 2021 Timeless, nor the 'Timeless AE' anniversary variant, nor the 7Hz x Crinacle Divine/Diablo planars. 7Hz first showed a Timeless II in 2023, recalled it before sale over its tuning, and shipped this retuned version in December 2024 — early graphs of that pre-production unit don't describe the retail set.

The 7Hz Timeless II is the long-awaited follow-up to the 2021 Timeless — the ~$220 planar IEM widely credited with kick-starting the budget-planar wave. It keeps the unmistakable coin-shaped aluminium shell but grows the driver to 14.5 mm, adds a four-nozzle tuning system and a modular 2-pin cable, and sells for $229.

It arrived late — 7Hz recalled a first version in 2023 — into a field the original had helped crowd: the Letshuoer S12, Hidizs MP145, ARTTI T10, Kiwi Ears Aether and a dozen more now sit under and over its price. Reviewers and owners largely agree it resolves, images and is built like a set above its cost; they split, sometimes sharply, on its treble, its bass, whether the big coin shell actually fits, and whether it's still the planar to buy.

A good fit for

  • Detail and imaging chasers — including competitive gamers — who want class-above technicalities for the money
  • Tinkerers who'll use the nozzles, tip-roll or EQ to set the treble and bass where they like them
  • Listeners who like a bass-lifted, bright-leaning planar sound with plenty of air
  • Anyone with a capable dongle or DAP, ideally balanced, to let it scale
  • Medium-to-large ears that suit a shallow-fitting shell

Think twice if

  • You're treble-sensitive and won't swap nozzles or tips — sibilance and fizz are the most common complaints
  • You have small ears or need a fuss-free, all-day fit without tip-rolling
  • You want warm, thick lower mids and weighty male vocals
  • You want dynamic-driver slam and rumble from a phone or a weak dongle
  • You're buying on value alone and a cheaper planar (S12, T10, MP145) or 7Hz's own Divine would do

The reviewer consensus

Agreement &
disagreement.

5 / 12topics divide opinion
7 Mostly agree5 Divided opinions

Common ground6

  • Detail, speed and transient snap well above the price — the broadest point of agreement.
  • Precise imaging with strong separation, in a stage most hear as wide and fairly tall.
  • Clear, natural mids — with a lower midrange that runs a little lean and cool.

Points of contention5

  • Treble: airy and non-fatiguing vs bright and sibilant for the treble-sensitive vs blunt — moved by nozzle, fit depth and unit.
  • Bass: deep, punchy 'best planar bass' vs short on rumble or loose — largely a matter of seal and source power, since the rigs put it above target.
  • Fit: comfortable for hours vs a coin shell and shallow insertion that press or won't seal — close to an even split.

A closer listen.

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

Tonality

Leans positiveMostly agree
Reviewer sentiment17 supporting sources
CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

A bass-lifted, bright-leaning signature that reviewers label anything from V-shaped to W-shaped to 'neutral bright' — the labels depend on the nozzle and the listener more than on disagreement about the curve. The stock gold flat/'flower' nozzle is the common reference; the silver flat trims the upper mids, and the dome nozzles pull the treble down. A minority find it merely competent or 'uninspired'.

“The 7HZ Timeless II presents a well-balanced sound signature, leaning slightly towards the lower frequencies.”

Gökhan Aydın, MoonStar Reviews

“this is actually neutral bright in my opinion”

Dracomies (YouTube)

“If you are sensitive to upper treble (10kHz+) Then using the dome shaped nozzles will be the safer choice, with the gold one being a bit safer than the silver.”

Bobjonez98, r/iems

Measured

On 19 IEC-711-class squig rigs (stock gold flat nozzle, normalised at 500 Hz) the median sits +1.4 dB over the Harman IE 2019 target at 20–40 Hz and +2.2 dB at 100–200 Hz, peaks early at ~2.4 kHz, dips −1.9 dB at 2–4 kHz and −3.0 dB at 4–6 kHz, then rises +5.4 dB over target at 10–16 kHz. Against the original Timeless on the same 14 rigs it adds ~1.9 dB of sub-bass and ~1 dB above 4 kHz, and is otherwise within half a decibel. The silver flat nozzle cuts 2–4 kHz by ~1.8 dB; the dome nozzles cut everything above 2 kHz by 1–2 dB on most rigs and by 3–7 dB on five.

Link to this topic

The hardware

Specifications.

Checked

Design

Type
In-ear monitor
Drivers
1 × 14.5 mm planar magnetic (dual-sided coated diaphragm, dual-sided N52 magnet array)
Tuning
Nozzles

Electrical

Impedance
15.2 Ω
Sensitivity
108 dB/V≈ 89.8 dB/mW

Connection

Cable
Detachable
Connector
0.78 mm 2-pin
Plugs supplied
3.5 mm, 4.4 mm balancedmodular

Physical

Weight
5 g per earpiece

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

Follow the evidence

Sources 68

1–6 of 68 sources

Read with context

Limitations & method.

As of

What to keep in mind 6

  1. This is a read of where opinion sits as of September 2026. The budget-planar field the original Timeless started keeps moving, and cheaper, newer sets keep shifting the value math.

  2. Most of the long-form reviews were written on units sent by the retailer, and owner star ratings skew positive — though here the owners are also where most of the fit and reliability complaints come from.

Where to buy Product & retailer links

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