In-Ear MonitorOverreview

7Hz G1

A $35 metal-shelled V-shape that critics call one of the best-executed budget tunings around — and that a loud minority of owners find piercing, or lose to a fading channel.

29 sourcesUpdated
$35Typical US price

Score aggregates reviewer opinions across topics.

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7Hz G1

The short version

What to know.

The 7Hz G1 is a $35 single-dynamic-driver IEM in a metal shell, tuned as a pronounced V: measurements on seven rigs agree on a sub-bass shelf a few dB above the Harman target, a midrange close to target, and treble well above it, with a narrow peak near 8 kHz. Reviewers broadly agree on punchy, controlled, sub-focused bass, an above-average stage for the price, light all-day comfort and a premium-feeling shell, and most rate it good value. Opinion splits on the treble — sparkling and well controlled to most press reviewers, piercing and sibilant to a sizeable group of owners and critics — and on whether vocals sit naturally or thin and set back. Build splits along who paid: reviewers praise the shells, while owners report units whose left or right channel fades after weeks or months. Its gaming-specific imaging claims are also disputed.

About this product

The $35 G1 (October 2024) is a single 10 mm DLC-diaphragm dynamic-driver IEM in a metal shell, the first model in 7Hz's gaming-branded G series, sold mainly through Linsoul in black or white, with a 3.5 mm cable with or without an inline mic (a white USB-C mic version is also sold). Not the 7Hz x Crinacle Zero:2 or the Salnotes Zero, which are the brand's other budget single-DD sets.

The 7Hz G1 is a $35 single-dynamic-driver IEM launched in late 2024 as the first of 7Hz's G series, marketed by its seller Linsoul as a gaming earphone tuned to the Harman target. It sits beside the brand's better-known Zero:2 and Elua Ultra, but in a full metal shell with a zippered silicone case and an optional mic cable.

Reviewers quickly decided the gaming label undersold it: the measured response is a deep, bright V — more sub-bass and much more upper treble than the Harman target — and that energy is exactly what people argue about. Some hear sparkle and a wide stage; others hear a sharp 8 kHz peak. Owners add a second argument the review loaners never had time to see.

A good fit for

  • Listeners who want a lively, bass-and-treble V-shape on a small budget
  • Long sessions and small ears — the shells are among the most comfortable at the price
  • Casual and cinematic gaming, where the bright, punchy tuning adds impact

Think twice if

  • You're treble- or sibilance-sensitive — the EW200 or Zero:2 are calmer options reviewers name
  • You want forward, full-bodied vocals
  • You need a set you can rely on for years without risking a channel failure
  • You want a competitive-FPS tool first and a music IEM second

The reviewer consensus

Agreement &
disagreement.

4 / 12topics divide opinion
8 Mostly agree4 Divided opinions

Common ground5

  • A pronounced V-shape — clearly bassier and brighter than the Harman target, despite the 'Harman' marketing
  • Punchy, controlled, sub-bass-led bass rather than mid-bass bloat
  • Above-average stage width for the price

Points of contention4

  • Treble: controlled sparkle to most press reviewers, piercing and sibilant to many owners — the ~8 kHz peak is in every measurement
  • Mids: clean but not vocal-forward vs scooped, with thin male vocals
  • Build: praised metal shells vs owner reports of a channel fading or dying after weeks or months

A closer listen.

12 topics · 4 divided
Left: criticalRight: positiveTighter lines: more agreement

Treble

Leans criticalDivided opinions
Reviewer sentiment17 supporting sources
CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

Sources split. Every measurement shows the same thing — treble well above the Harman target with a narrow peak around 8 kHz, more top-end energy than the Simgot EW200 and far more than the Zero:2. Most press reviewers hear that as sparkle and air that stays just on the right side of harsh; a large group of owners, Jaytiss and HiFiASMR hear it as piercing, sibilant and fatiguing; a smaller middle group likes the clarity but notes sibilance on some tracks. Several reviewers explicitly warn treble-sensitive listeners off.

Measured

Seven independent squig rigs (mostly IEC 711-class couplers), normalised at 500 Hz: within ~1–2 dB of the Harman IE 2019 target through 1–4 kHz, then ~1–5 dB over it at 6–10 kHz and ~4–7 dB over at 10–16 kHz, with a narrow peak centred anywhere from ~7.6 to ~9.8 kHz depending on the rig. On shared rigs that is ~2.5–4.5 dB more 6–10 kHz energy than the Simgot EW200 and ~4–5 dB more than the 7Hz Zero:2. ATechReviews' deep-fit seating trims 4–10 kHz by under 1 dB; one of boizoff's foam-tip files cuts 10–16 kHz by ~3 dB.

vs. listeners — The peak appears on every rig, but its centre moves with the rig — the signature of a coupler resonance. Bad Guy Good Audio argues the 8 kHz height is largely a measuring artifact, while HiFiASMR reads the same graph as the set's main flaw. The owner complaints of piercing, sibilant vocals suggest it is audible to a sizeable minority either way.

Where it splits
Energetic but controlled — crisp sparkle and air with good resolution, short of harsh.47%

“Very good level of resolution and descriptive ability, despite the high energy level.”

Hi End Portable
Too sharp — piercing highs and sibilant vocals that fatigue within hours and need EQ or tips.42%

“these sound very good, the treble is very piercing”

Amazon owner review (verified purchase)
Lively and revealing, but prone to sibilance on bright recordings.11%

“The vocals and instruments are at the verge of becoming peaky and sibilant, but they don’t seem to lose the integrity of the notes.”

SherryLion (Head-Fi)
Link to this topic

The hardware

Specifications.

Checked

Design

Type
In-ear monitor
Drivers
1 × 10 mm dynamic (dual-magnetic, dual-cavity; DLC (Diamond-Like Carbon) diaphragm, N52 magnets)
Housing
aluminium alloycommunity-sourced

Electrical

Impedance
18 Ω
Sensitivity
107 dB/V≈ 89.6 dB/mW
Frequency response
10 Hz – 20 kHz

Connection

Cable
Detachable
Connector
0.78 mm 2-pin
Plugs supplied
3.5 mm

Sold with or without an inline mic; a white USB-C cable version also exists. Manufacturer-published figures, not measurements · from linsoul.com. Housing not published by the maker — community-sourced from hands-on reviews: head-fi.org, youtube.com.

Follow the evidence

Sources 29

1–6 of 29 sources

Read with context

Limitations & method.

As of

What to keep in mind 5

  1. A read of where reviews, measurements and owners stood in October 2026 — budget IEMs turn over fast, and newer rivals keep moving the bar.

  2. Most of the written and video reviews were done on units supplied by the seller, while the reports of a channel fading came from owners months in; weigh both.

Where to buy Product & retailer links

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