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Amazon.com: OSD 60W Compact Stereo Amplifier, 1/4" Mic Input, Treble & Bass Control, Class D XMP60 : Everything Else
Amazon.com: Douk Audio M1 PRO 320W Bluetooth Power Amplifier, 2 Channel Audio Amp, Wireless Receiver, for Home Stereo Speakers/Active Subwoofer, with Treble & Bass Control/U-Disk Music Player : Electronics
