DFRobot High Power Bluetooth Power Amplifier Board is a cost-effective high power Bluetooth amplifier board that features 100W output power. It has a volume control button, Bluetooth 5.0 input, and dual-track output. The board can be operated at DC 5~24V and is compatible with 4-8Ω 50W-300W passive speakers. Connect it to a Raspberry Pi, mobile phones, and other main-controllers with Bluetooth. Features & Specs * Supply Voltage 5-24V * Output Power 100Wx2 * Compatible Speakers 50W-300W, 4Ω-8Ω * Sound Channel left/right channel(stereo audio) * Bluetooth Version 5.0 * Bluetooth Transmission Distance 15m (without any obstacle) * Protection auto overheat protection, auto short circuit protection * Power Source Voltage * 12V--8Ω speaker/24W(left channel)+24W(right channel), 4Ω speaker/40W+40W * 15V--8Ω/32W+32W，4Ω/>60W+60W * 19V--8Ω/64W+64W，4Ω/>80W+80W * 24V--8Ω/72W+72W，4Ω/>100W+100W https://elecena.pl/product/17396087/dfrobot-high-power-bluetooth-power-amplifier-board 2021-02-23 https://elecena.pl/product/17396087/dfrobot-high-power-bluetooth-power-amplifier-board 2021-06-06 https://elecena.pl/product/17396087/dfrobot-high-power-bluetooth-power-amplifier-board 2022-05-18 https://elecena.pl/product/17396087/dfrobot-high-power-bluetooth-power-amplifier-board 2022-08-10