Inductor Used on Power Supply to DAC?
It is a power supply decoupling inductor. Without an accompanying circuit theory document from the designer, I could not tell you why it was selected or even exactly what that 2500 means.
Normally if there is a number next to an inductor it is the inductance in micro Henrys. On the one hand, a 2500 micro Henry inductor is going to be pretty big. On the other hand, if they are trying to suppress audio frequency noise it might make sense.
If it were me, I would try to find a bill of materials, or a picture of the board. The first would tell you for sure, with a picture, you could look at the size of the inductor at least make a guess.