Where do I ship my headphones for individual calibration? Viesturs Updated February 04, 2019 12:28 Follow Our address is: Street: Smerla iela 3City: Riga Country: Latvia Postal Code: LV-1006 Company: SONARWORKS Ltd Related articles How long does it take to calibrate my headphones? Does the impedance of my headphones and amplifier matter? I received my individually calibrated headphones but there is no individual calibration file. Where do I get it? (Reference 4.2 & legacy versions) Can I use in-ear headphones with Reference 4? What is an individual headphone calibration? Comments 0 comments Please sign in to leave a comment.