<https://www.head-fi.org/threads/zero-audio-zh-dx200-carbo-tenore-zh-dx210-carbo-basso-carbon-aluminium-iem-thread.665111/>
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"Zero Audio - ZH-DX200 Carbo Tenore | ZH-DX210 Carbo Basso (Carbon & Aluminium IEM) thread"
<https://www.head-fi.org/threads/zero-audio-zh-dx200-carbo-tenore-zh-dx210-carbo-basso-carbon-aluminium-iem-thread.665111/page-257#post-10738423>