Only when the noise reduction figure is independently certified to a recognised standard. HIGHKA pods achieve 35 dB noise reduction certified to ISO 23351-1 Class A — the highest performance classification under the international standard for office pod acoustic measurement. This is an independently measured and documented figure. When evaluating any supplier, request the ISO 23351-1 test report and certified class. Manufacturer self-assessments without independent certification are not a reliable basis for specification comparison.