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Amazon.com: Amphony Multichannel Wireless Audio Receiver/Amplifier for Making Passive Speakers Wireless - Model 880, Compatible with Model 800 Multi-Channel Transmitter, Better-Than Bluetooth Digital Wireless : Electronics
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Amazon.com: Amphony Wireless Speaker Kit with two Wireless Amplifiers (New Model), Makes Surround Speakers Wireless, 2x80 Watts, 300ft range, Connect to any Audio Source, Better-than Bluetooth Digital Wireless : Electronics
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