Pedzisa mutsara unotevera: Muna 1951 pakagadzirwa gudzanzwi rinosundira rinosundira rinosvika 25 watt, nokuda kweChiratidziro cheKurima chegore iroro muMoscow. Kubvira munenge muna 1954, fekitari yacho yakatanga kugadziridza uye kuisa pfungwa dzayo pakugadzira mafoni nemakrofoni chete. Muna 1957, nhare duku dzeOctava nematauri anotsvedzerera anotsvedzerera zvakaratidzwa muchikamu cheRussia pa
1958 kuratidzwa muBrussels. Muna 1961 Oktava akaunza runhare ruduku D2 ndokutanga kugovera maikorofoni dzine simba kuKremlin. Chirimwa chacho chakatangawo kutenderera kwechipiri kwekuvandudza uye chakatanga kugadzira michina yekuyera yemagetsi-acoustic kuyedza maikorofoni uye nhare.