I'm testing the adau1701miniz eval board and getting a strange frequency response characteristic. Using the analog line level inputs and outputs, the output has a high pass response with a corner frequency of ~2khz, -12db per decade.
The test setup includes just an audio precision unit in addition to the evaluation board. I've configured the DSP to directly pass through the analogue in to corresponding outputs attached to the output TRS jack.
Would anybody have some advice as to what I'm missing here?
Many thanks in advance.