Eventhough it is an array microphone, it can measure sound frequency response just like the more expensive free field or random field microphone. The difference in them all are variation of frequency response at much higher frequencies (i.e 15k Hz or higher). This is rarely a concern for normal everyday measurement.

Note that the shipping i put is pricey to compensate for the item actual value (due to seller item value limit, I have not sold items in ebay for years). I will ship by standard shipping. You can offer any price including shipping.