Sennheiser HD 620S With A Closed-Back Design And 42mm Transducers Launched In India: Check Specs And Price Here The German audio manufacturer Sennheiser has launched closed-back headphones in India: the HD 620S. Coming from the HD 600 series of headphones, the HD 620S ships with 42mm dynamic transducers, 38mm diaphragm… Xiaomi 15 vs. vivo X200: […]