Brands/models:

China

  • Andoer
  • Aune Audio
  • Aiyima Audio
  • Bluedio
  • Brainwavz Audio
  • Cayin
  • Dark Voice
  • Douk Audio
  • Edifier
  • FiiO
  • Fosi Audio
  • Gustard
  • Hidizs
  • HiFiMan
  • iBasso
  • KZ
  • Little Dot
  • Loxjie
  • Matrix Audio
  • Nobsound
  • OPPO
  • Sabaj
  • Shanling
  • SMSL
  • Superlux
  • Tin Audio
  • Topping
  • xDuoo
  • YaqinAudio

Russia (post-Soviet)

  • REEZOLDINI
  • Soyuz (by the name it sounds Soviet, but it was founded in 2013)

USSR

  • Apro
  • Arktur
  • Daina
  • Elektronika
  • Estonia
  • Festivals
  • Junost
  • Kliver
  • Latvia
  • Ljux
  • MAC 1 Type 10 speakers
  • Majak
  • Melodia
  • Odysseus
  • Orbita
  • Radiotehnika (35AC-1, S-90)
  • Rekod
  • Romantika
  • Rossia
  • Rostov
  • Simfonija
  • Tembr
  • VEF
  • Vega
  • Vesna
  • Zvezda

Some of them look similar. Maybe most of them made by the same people or by the same factory?

People

  • Alexander Jan-Belyaevsky
  • Kerno Roland Paulovich
  • Lacis Dzintars Arturovich

[https://goldenageofaudio.blogspot.com/2011/11/ussr-audio-classics.html](Some photos of Soviet audio equipament)

Could not find any info about audio companies in Cuba, DPRK/“North Korea”, Vietnam, Belarus and others. It seems they don’t produce this kind of technology?