USB Flash Drive Micro SD TF Card MP3 Player Board Module w/ Switches & 2W Amplifier (MONO)

NOTE: These modules are configured for MONO output, not stereo. The right and left channels are combined and played as a mono output to the left channel of the output jack (or to a mono output jack), and to the board-mounted screw terminals.   Use this DIY MP3 player/audio decoder module to build your own MP3 player, Boom Box or portable audio player. Connect directly to headphones, or pair the output of this player with an audio amplifier board such as a PAM8403 or PAM8610 to power your speakers.    Description: Plays MP3 audio files on a TF (MicroSD) card (the memory card used in cell phones), or a USB drive in U disk playback mode. Superior sound quality, 3.5mm headphone jack to connect headphones or to an external stereo amplifier. Onboard 2W mono amplifier to directly connect a speaker (single channel only for monitoring, not appropriate for stereo playback).  Screw-type terminals to connect an external speaker (no soldering). Can be powered with standard 5V USB power (a USB powe