Audio quality is somewhat underwhelming
The OnePlus X made a decent start in our audio quality test. The smartphone didn't have the best frequency response or the perfect distortion readings when connected to an active external amplifier, but we can live with those flaws. And you do get just-above-average loudness with mostly excellent clarity scores, so it's mostly good on this occasion.
Plug in a pair of headphones, though, and things quickly go south. Volume drops, a ton of distortion creeps and you get the usual spike in stereo crosstalk. Hardly the most impressive showing here by the OnePlus X and one that would make audiophiles think twice before ordering it.
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