# Sennheiser IE 600 vs 7Hz Timeless II: specs and price compared

A sourced, side-by-side comparison of the Sennheiser IE 600 (Sennheiser) and 7Hz Timeless II (7Hz) among in ear monitors. 7Hz Timeless II is the cheaper of the two at $229.

## Side by side

| 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 |

## Key differences

- 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

**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.)

## Sources

- Sennheiser IE 600: https://us.sennheiser-hearing.com/products/ie-600 (us.sennheiser-hearing.com, verified 2026-07-11)
- 7Hz Timeless II: https://www.linsoul.com/products/7hz-timeless-ii?currency=USD (linsoul.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/in-ear-monitors/sennheiser-ie-600-vs-7hz-timeless-ii/
Cite: Per The Front Desk Review, Sennheiser IE 600 ($699) vs 7Hz Timeless II ($229) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/in-ear-monitors/sennheiser-ie-600-vs-7hz-timeless-ii/
License: CC BY 4.0.