Electrifier XY-AP50H Bluetooth 5.0 Stereo Amplifier Board 50W+50W Class D | Four input modes — AUX, USB sound card, U-disk and wireless | DC 5-24V input | drives 4-8 Ohm speakers | rotary volume

The Electrifier XY-AP50H turns almost any source into a wired or wireless stereo system. Pair a phone over Bluetooth 5.0, plug in an AUX 3.5mm cable, run a U-disk full of music, or connect it as a plug-and-play USB sound card from a computer — four input modes on one compact board, so you are not limited to a single connection like most amplifier modules in this class. At its core is a TPA3116D2 Class D amplifier driving two channels, with LC filtered output for clean sound and low distortion as volume rises. It delivers up to 50W per channel into 4 Ohm speakers at higher supply voltages, and supports 4 Ohm to 8 Ohm passive speakers through a screw terminal block for the left and right channels. Power comes from a DC 5 to 24V barrel jack; a 19V 2A adapter is recommended when you want maximum output, while lower voltages suit smaller desktop or shelf speakers. A single rotary knob handles everything — turn for volume, short press to play or pause, long press to switch on or off — and a 3.5mm line-level audio output lets you pass the signal on to another amplifier or an active subwoofer. This makes the XY-AP50H well suited to DIY speaker builds, bookshelf and ceiling setups, workshop and garage audio, retail and small event sound, and hobby electronics projects where you want flexible inputs without a bulky receiver. It is built for makers, installers and small audio shops who want honest specifications and straightforward wiring. Every board is manufactured under ISO-certified processes and backed by a 1-year Electrifier warranty.