Thanks NC8000.. That's the reason I only use my SP800N with my phone (S8 and Poweramp which EQ works) and only use wired IE40 pro or HD600 with A55.No the A55 eq or other dsp features have no effect over bt, you have to eq with the Sony app on your smartphone as the eq settings are stored in the buds and then work regardless of what source is used for play back
But good to know that eq settings are in the buds... Thanks again