AK45 Pro Home Audio Amplifier Receivers with Bluetooth 5.0-2 Channel 30W Power Home Theater Stereo with USB, SD, FM, 2 Mic in, Stereo Audio Amplifier Receivers for Studio, Home, Karaoke. Let you enjoy the high quality home audio experience. [Multiple Input Modes]The audio amplifier supports various external signal sources:Connect your music streaming devices such as PC/mobile/laptop with Bluetooth, RCA & MIC input. It also supports USB port, SD/TF card port & FM radio. Just enjoy your music the way you want. NOTE : Please keep the distance within 16.4ft/5m between the device and amplifier without any wall blocking. But if you connect with PC devices, please keep the distance within 6.5ft/2m. [Wide Application]The AK45 Pro Audio Amplifier compatible with cell phones, computers, tablets, notebooks, etc. Recommended for home TV audio, computer audio system-game, tower speaker, garden speaker. Small simple compact design also for car audio system. [Easy Operation]Conveniently change audio settings from a distance with the included mini remote control. (NOTE: Remove the battery cover on the remote control upon receipt for it to work, the remote control can ONLY remotely control the volume of MP3/BT/FM). Set the desired output of music with bass and treble control knobs. Enjoy a clear and detailed display with our amplifier that comes with a built-in digital LED display. [Hi-Fi Amplifier]Designed for users who demand high fidelity sound quality. Built-in 2 upgraded audio processing chips, powerful sound processing technology ensures low distortion output and high fidelity sound quality, and also minimizes the impact of noise by eliminating the current sound as much as possible.