PSB Speakers, founded in 1972 in Ontario, Canada, has been a pioneer in delivering “True to Nature” sound, emphasizing accurate and natural audio reproduction. Their extensive research in psychoacoustics, led by founder and chief designer Paul Barton, has established them as a leader in the high-fidelity audio industry. In July 2020, PSB Speakers announced a partnership with Audiodo to integrate our Personal Sound technology into their headphone products. This collaboration aims to allow individual users to calibrate their unique hearing perception to PSB’s True-to-Nature sound signature. The partnership culminated in the development of the PSB M4U 8 MKII headphones, which feature Audiodo Personal Sound technology to deliver immersive, high-fidelity audio tailored to each user’s hearing profile.​