냉전시절 일본은 몰래 소련에 음향기기 수출
<iframe width="4268" height="2400" src="https://www.youtube.com/embed/_W__jsMXRtw" title="Обзор магазина винтажной техники в Санкт-Петербурге у метро Удельная Vintage Tech" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>