How long does it take to calibrate my headphones? Viesturs Updated July 12, 2016 11:20 Follow Usually around 7-10 working days. Then they are shipped back to you! Shipping takes 2-5 working days on average. Related articles I received my individually calibrated headphones but there is no individual calibration file. Where do I get it? Where do I ship my headphones for individual calibration? What is individual calibration? Can I use an averaged calibration profile on a similar headphone model? Can I use in-ear headphones with your product? Comments 0 comments Please sign in to leave a comment.