# THIEAUDIO Cypher Headphone Review: Can It Challenge the HD600?

> THIEAUDIO has built much of its reputation in the IEM world, where lines such as the Monarch and Hype have earned the brand a loyal following among listeners chasing serious technical performance without immediately…

- **Source:** [Ecoustics](https://www.ecoustics.com/reviews/thieaudio-cypher-headphone/?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6a3c31a7191c924ab495a1bc)
- **Published:** 2026-06-24
- **Category:** Audio & Video
- **Tags:** #headphones
- **Canonical:** http://localhost:4321/a/6a3c31a7191c924ab495a1bc

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_GearOpen's distilled summary. The full original article is published at Ecoustics (source link above); GearOpen does not republish the source's full text._