Why did iFi select -12dB and -24dB?

Given the wide range of headphones/IEM sensitivities (e.g. from 140dB/V – a 30dB difference), we felt that as much attenuation as 24dB was needed for the most sensitive headphones. Using a 2-position switch breaks this in halve for less sensitive headphones, so 12/24dB to allow for a compact and affordable product.

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