The Sony Xperia M4 Aqua did very we

The Sony Xperia M4 Aqua did very well in our audio quality test. The smartphone did a great job in the first part, where it's connected to an active external amplifier and posted very scores top to bottom. Its volume levels come up just below average, but everything else about the output is excellent.

Plugging in a pair of headphones did harm the stereo crosstalk notably, but had no effect on the other aspects of the performance. Once more, the volume levels were nothing worth writing home about, though, so we have to deduct a couple of points and give this one a very good, rather than a perfect mark.

And here go the results so you can see for yourselves.