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89,00 $
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149,00 $
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69,00 $
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361,00 $
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Headphones

In early powered radios, the headphone was part of the vacuum tube's plate circuit and carried dangerous voltages. It was normally connected directly to the positive high voltage battery terminal, and the other battery terminal was securely grounded.

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  • Brand: Bose
Basics USB Plug-n-Play Computer Speakers for PC
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Bose Basics USB Plug-n-Play Computer Speakers for PC

Jack or analogue cinch cables already provide the amplified sound signal. Via USB, so-called frames or data packets are transferred from the hard disk to the USB sound card and then converted and amplified in the speaker.

120,00 $