Ya los he podido trastear. Excepcionalmente comodos, cancelación de ruido excepcional, sonido limpio (una vez que desactivas el DSEE Extreme) pero mal ecualizado. Pasado de graves y un tanto constreñido, con voces claras pero distantes. Afortunadamente, Sony permite un ajuste fino desde su app (huid de los presets, no sirven para nada)... y he creado una ecualización personalizada, que se guarda y funciona en todos los dispositivos. El resultado, la noche y el día. Ahora resultan realmente disfrutables en todos los géneros.
If you want a neutral or "hifi" sounding frequency response, it's worth looking into the Harman target curve, which is the result of years of research by Harman and is preferred by most people in blind tests.
For the XM4s you can achieve something very close with EQ of +4 at 1k Hz / +6 at 2.5k Hz / -1 clear bass (as tested by headphones.com). I enjoy this setting for all genres. The default XM4 settings make voices and instruments with prominent mid range frequencies sound masked in comparison.
If you want a neutral or "hifi" sounding frequency response, it's worth looking into the Harman target curve, which is the result of years of research by Harman and is preferred by most people in blind tests.
For the XM4s you can achieve something very close with EQ of +4 at 1k Hz / +6 at 2.5k Hz / -1 clear bass (as tested by headphones.com). I enjoy this setting for all genres. The default XM4 settings make voices and instruments with prominent mid range frequencies sound masked in comparison.