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2024 upgrade version digital audio amplifier. Fully updated design, 40 W + 40 W rated power, perfect for 4-8 inch passive speakers. Function expansion, add a microphone jack. Besides, the sound quality as a digital amplifier receiver is more perfect than ordinary analog amplifiers. With built-in power transmission board that supports AC 110-240V power input and DC 12V/5A current input, ready to use. Hi-Fi sound high performance: the high-capacity transformer in the amplifier ensures clear sound quality, so you feel like listening to music as if the artist is performing live in front of you. The harmonic distortion is less than or equal to 0.04%, which allows crystal clear and sharp music reproduction. Bluetooth/RCA/USB/2 MIC/FM radio inputs. The amplifier offers multiple input options, including Bluetooth, RCA, USB, 2 microphone inputs and FM radio. The Bluetooth 5.0 version offers a range of 16.4 ft/5 m, so you can easily connect your music streaming devices. The amplifier also features a remote control for convenient adjustment of audio settings. Easy to use: Equipped with a remote control, you can change the audio settings remotely and feel less tired and comfortable. With bass and treble control buttons, you can adjust the desired music output according to your wishes. The bright digital LED display allows you to easily see the settings you have made. Blauzahn5.0 ▶ Wireless Bluetooth 5.0 supported, easy to connect with smartphones, tablets and other Bluetooth devices directly after turning on the device. It also has a USB input. This means stream the music as you like and enjoy the music with high quality, small simple compact design. Bluetooth only available when you switch to blue mode; Product description 2024 Upgrade Version; Product description 2024 Upgrade Version; 2024 Upgrade Version