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File:Vintage Zenith Royal 3000-1 Trans-Oceanic Portable Multi-Band Radio Instruction Booklet - Front View, Circa 1964 (45515359761).jpg - Wikimedia Commons
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Amazon.com: Wireless Bluetooth Home Stereo Amplifier - Hybrid Multi-Channel 3000 Watt Power Amplifier Home Audio Receiver System w/AM/FM Radio, MP3/USB,AUX,RCA Karaoke Mic in - Rack Mount, Remote - P3301BAT : Electronics
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