[Upgraded Chip, Higher Output Power] This AK30 mini stereo amplifier uses the high-performance TPA3116 chip and comes with a 12V5A DC power supply for reliable performance. When used with 4-ohm passive speakers, the amplifier delivers a maximum output power of 50W+50W. This stereo amplifier boasts a signal-to-noise ratio (SNR) exceeding 92dB, total harmonic distortion () below 0.04%, and covers a wide frequency range of 20Hz to 20kHz.[Simple Premium Design] The AK30 amplifier features a compact and sturdy alloy housing. Although it only has one knob, we've integrated all adjustments for easy control. and release the knob to play/pause music, hold it down to switch between modes, and rotate it to adjust the volume.[Multiple Inputs] This AK30 amplifier is equipped with multiple inputs, including Bluetooth, 3.5mm AUX, USB, and OPT. It's compatible with most devices, including phones, tablets, laptops, and MP3 players.[Excellent Compatibility] It supports a wide voltage range of DC 9V-24V, making it easy to carry to a friend's house; just bring the power adapter to connect your device. Our Bluetooth audio amplifier is compatible with a variety of tablet, TV, smartphone, Bluetooth laptops, and more.Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on.Voltage: AC110VColor: BlackMaterial: MetalPackage Contents:1 x AK30 amplifier1 x DC12V/5A power adapter1 x USB Type-C cable1 x 3.5mm AUX cable1 x to 3.5mm AUX cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.