706 in IEMs
YU9 Audio (Fish 9) - U-556
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Based on 1 year's data from Mar 17, 2026 How it works
Kukikokikokuko 1.0r/iems • Flat sound under €100 →
Hexa is great of course, but not flat. Maybe you’re confusing neutral with flat. Flat at $100 would be Yu9 U-556, Etymotic ER2SR.
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