Sennheiser
Sennheiser IE 600
$699
Released 2022-03
Best In Ear Monitors · head-to-head
Sennheiser IE 600 vs 7Hz Timeless II
A sourced, side-by-side comparison. 7Hz Timeless II is cheaper at $229. Every spec and price links to its source.
7Hz
7Hz Timeless II
$229Cheaper
Released 2025
Which is better: the Sennheiser IE 600 or 7Hz Timeless II?
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 | Sennheiser IE 600 | 7Hz Timeless II |
|---|---|---|
| US price | $699 | $229 |
| Brand | Sennheiser | 7Hz |
| Released | 2022-03 | 2025 |
| Driver type | dynamic | planar-magnetic |
| Driver config | 1DD | single planar |
| Impedance ohms | 18 | 15.2 |
| Sensitivity db mw | — | — |
| Frequency response (Hz) | 4-46500 | — |
| Connector type | mmcx | 2pin-0.78mm |
| Cable detachable | Yes | Yes |
| Plug termination | 3.5mm | modular |
| Shell material | amorphous-metal | — |
| Weight grams | 6 | 5 |
Sources — Sennheiser IE 600: us.sennheiser-hearing.com (verified 2026-07-11). 7Hz Timeless II: linsoul.com (verified 2026-07-11).
What's the difference between the Sennheiser IE 600 and 7Hz Timeless II?
Where the two actually differ on the specs we track (6 of 10). Matching specs are omitted.
- Driver type: Sennheiser IE 600 dynamic vs 7Hz Timeless II planar-magnetic
- Driver config: Sennheiser IE 600 1DD vs 7Hz Timeless II single planar
- Impedance ohms: Sennheiser IE 600 18 vs 7Hz Timeless II 15.2
- Connector type: Sennheiser IE 600 mmcx vs 7Hz Timeless II 2pin-0.78mm
- Plug termination: Sennheiser IE 600 3.5mm vs 7Hz Timeless II modular
- Weight grams: Sennheiser IE 600 6 vs 7Hz Timeless II 5
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Sennheiser IE 600
All three whitelisted testers (SoundGuys, Tom's Guide, TechRadar) recommend the IE 600 as a premium wired IEM with outstanding detail and a durable zirconium build; only SoundGuys measured anything (5-10 dB foam-tip sub-bass isolation). Chief gripes are the high list price across all three, plus Tom's Guide's harsh-treble warning and a polarizing housing texture. (3 sourced reviews, 1 lab-tested.)
Praised: Exceptional detail retrieval and clear, balanced sound; Durable, premium aerospace-grade ZR01 zirconium housing; Generous accessories: dual 3.5mm/4.4mm cables, foam and silicone tips, case.
Flagged: Expensive at list price; Very confident high frequencies can tip into harshness on bright sources; Textured housing finish is polarizing and can feel uncomfortable over time.
7Hz Timeless II
No sourced tester review yet.