7Hz
7Hz Timeless II
$229Cheaper
Released 2025
Best In Ear Monitors · head-to-head
7Hz Timeless II vs Etymotic ER4XR
A sourced, side-by-side comparison. 7Hz Timeless II is cheaper at $229. Every spec and price links to its source.
Etymotic
Etymotic ER4XR
$349
Released 2016
Which is better: the 7Hz Timeless II or Etymotic ER4XR?
On the specs we track, they're closely matched. The 7Hz Timeless II is the cheaper at $229.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | 7Hz Timeless II | Etymotic ER4XR |
|---|---|---|
| US price | $229 | $349 |
| Brand | 7Hz | Etymotic |
| Released | 2025 | 2016 |
| Driver type | planar-magnetic | balanced-armature |
| Driver config | single planar | 1BA |
| Impedance ohms | 15.2 | 45 |
| Sensitivity db mw | — | 98 |
| Frequency response (Hz) | — | 20-16000 |
| Connector type | 2pin-0.78mm | mmcx |
| Cable detachable | Yes | Yes |
| Plug termination | modular | 3.5mm |
| Shell material | — | aluminum |
| Weight grams | 5 | — |
Sources — 7Hz Timeless II: linsoul.com (verified 2026-07-11). Etymotic ER4XR: etymotic.com (verified 2026-07-11).
What's the difference between the 7Hz Timeless II and Etymotic ER4XR?
Where the two actually differ on the specs we track (5 of 10). Matching specs are omitted.
- Driver type: 7Hz Timeless II planar-magnetic vs Etymotic ER4XR balanced-armature
- Driver config: 7Hz Timeless II single planar vs Etymotic ER4XR 1BA
- Impedance ohms: 7Hz Timeless II 15.2 vs Etymotic ER4XR 45
- Connector type: 7Hz Timeless II 2pin-0.78mm vs Etymotic ER4XR mmcx
- Plug termination: 7Hz Timeless II modular vs Etymotic ER4XR 3.5mm
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
7Hz Timeless II
No sourced tester review yet.
Etymotic ER4XR
Three whitelisted testers (What Hi-Fi, TechHive, TechRadar) reviewed the ER4XR; TechRadar's is a joint ER4SR/ER4XR piece that discusses the XR trim explicitly. All three praise reference-grade midrange clarity, and two single out a tasteful bass lift over the ER4SR, but none ran lab measurements. Fit divides them: two call the deep insertion invasive or strange, one finds the flanges very comfortable. (3 sourced reviews.)
Praised: Reference-grade, near-perfect tuning with excellent midrange detail and clarity; Tasteful bass lift over the ER4SR without bloat or losing accuracy; Class-leading passive noise isolation from the sealed, non-ported design.
Flagged: No in-line mic or remote; wired-only connection; Deep-insertion, triple-flange fit feels invasive or strange for some; Analytical, sibilant sound that punishes low-quality sources.