Speaker USB powered
thingiverse
This is a compact speaker, measuring 3W by 2, powered directly via USB. Speakers with a 3W output and 4Ohm impedance can be found online at the specified link: PAM8403 Audio Amplifier Boards, capable of delivering 5V power to two channels at 3W each, complete with volume control and USB-powered functionality, are also available for purchase at the provided link.
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