What is a Personal Sound Profile? March 22, 2023 15:39 Updated The Personal Sound Profile takes an audio test on the Nothing X app, creating a dynamic compensation solution based on your unique hearing and keeping your music crystal clear. Related articles What is "Personalised ANC"? How do I do the hearing test? How to find the SN/IMEI of my Nothing product? Can Phone (1) use other wireless chargers to charge? Does Ear (2) support Bass Lock?