FeaturesAs a digital power amplifier & music player, it supports RCA/AUX/USB/BT 5.0/TF Card inputs, almost compatible with all home audio device such as phone, tablet, computer, TV, set-box, CD player etc. U-disk and TF card support WAV, APE, FLAC lossless formats .USB interface supports U-disk, computers (no need for driver) and phones (with OTG function) input. Bluetooth 5.0 achieves stable and faster transmission speed, TF card makes it convenient to enjoy high-quality music even on the road or outdoor.Adopting classic TPA3116 chip, max output power can reach 50W*2, enough for most home desktop/bookshelf/indoor passive speakers(4-16). The sound is clear and clean without any audible noise even at high output.Compact design and exquisite appearance, attractive chassis with LED display and power / mode switch, very suitable for home and desktop audio system use.DC 9-24V wide voltage makes it possible to be used in car or motorcycle.Comes with complete accessories including high-quality 19V power supply(optional), USB cable(with shielding ring), 1:2 and 2:2 RCA cable, 3.5mm AUX cable, no need to wait and enjoy its powerful function at once as long as you receive it.ParametersBrand: GYKZBluetooth: 5.0 VersionAudio Inputs: RCA / 3.5mm AUX / Bluetooth / USB / TF cardAudio Output: Banana Speaker JacksU-disk/TF card Supporting Format: MP3, WAV, APE, FLACMax U-disk / TF Card Storage: 128GMax Output Power: 50W*2 (24V/4 load)Speaker Impedance: 4-16Frequency Response: 20Hz-20KHzWorking voltage: DC 9V-24VColor: BlackDimensions (L*W*H): 110*90*50mm / 4.33*3.54*1.97inPacking List1 Digital Power Amplifier(Notice:this price dont include power supply,if you need it,you needPurchased separately)