beyerdynamic System DT 1770 PRO MKII / DT 1990 PRO MK II

<span class="MuiAccordionSummary-content Mui-expanded MuiAccordionSummary-contentGutters mui-style-1b8uc0m"> PRODUCT FEATURES <svg crossorigin="anonymous" aria-hidden="true" class="IconSvg-root mui-style-bmoeiz IconSvg">

<span class="MuiAccordionSummary-content MuiAccordionSummary-contentGutters mui-style-1b8uc0m"> TECHNICAL DATA <svg crossorigin="anonymous" aria-hidden="true" class="IconSvg-root mui-style-gr8hi3 IconSvg">