The Pyle Mini Blue Series (PTA22BT) mini stereo power amplifier provides up to 40 watts x 2 at 4 Ohms. Built-in Bluetooth technology allows you to instantly stream wireless audio from your favorite devices -- quickly and easily. This power amplifier also features a microphone input with mic pager and mixer mode capabilities. Connect external devices using the RCA (L/R) or AUX (3.5mm) stereo input connector jacks, let the music play, then take advantage of the mixer mode and enjoy karaoke ability. Also features four push-type speaker terminals. It's compatible with virtually any audio or computerized device (works with iPhones, Androids, Smartphones, iPods, MP3 Players, iPads, Tablets, etc.). Additional features include USB charging port, built-in short circuit and power surge protection, headphone jack, rotary master volume control and more. Enjoy compact and powerful wireless amplifier music streaming ability with the Pyle Mini Blue Series Bluetooth Amp.