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Vacuum tubes glowing inside a homemade hi-end sound amplifier. Vintage circuits radio components wires. Electronic radio tubes on the amplifier board. Old-fashioned valve amplifier. 80s retro lamps

视  频 ID：  1111807915
版      权：  NewProduction
视频长度：  0:16
横纵比率：  16:9
所属分类：  科技 
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