Oh yeah, when they disolved the Tesla tube company their equipment ended up in hands of many people that designed and manufactured audio equipment: back in comu

Oh yeah, when they disolved the Tesla tube company their equipment ended up in hands of many people that designed and manufactured audio equipment: back in comunist era it was almost impossible to get decent music/hifi gear so a lot of people went on designing and building their own gear and then went on creating small boutique companies after revolution.