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Audio Express BT170 Mini 40 Watt Digital Bluetooth Audio Amplifier Includes 12VDC Power Supply
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Amazon.com: Bluetooth Voice Amplifier with Microphone Wireless Headset, 25W Loudly Personal Handsfree Portable Microphone with Speaker, Echo Amp Small Voice Amplifier for Teachers Classroom Coaches ect : Musical Instruments
Audio Express BT170 Mini 40 Watt Digital Bluetooth Audio Amplifier Includes 12VDC Power Supply