Bluetooth 5.0 Stereo Audio Amplifier Receiver 2 Channel Cla D Mini HiFi Digital Power Amplifier with USB TF Reader for Home Speaker 50W x 2 TPA3116 Feature: 1. Digital power amplifier, it supports RCA/AUX/USB/BT 5.0/TF card input and is compatible with almost all home audio equipment, such as phones, tablets, computers, TVs, set-top boxes, CD players, etc. Support WAV, APE, FLAC lole formats for U disks and TF cards. 2. The USB port supports U disk input, computer (no driver required) and phone (with OTG function) input. Bluetooth 5.0 achieves a stable and faster transmiion speed, and the TF card makes it easy to enjoy high-quality music even on the road or outdoors. 3. Using the claic TPA3116 chip, the maximum output power can reach 50W * 2, which is enough to meet the requirements of most home desktop/bookshelf/indoor paive speakers (4-16). The sound is clear and clean, and there is no audible noise even at high output. 4. Compact design and exquisite appearance, with LED display and power/mode switch, very suitable for home and desktop audio systems. DC 9-24V wide voltage makes it can be used in cars or motorcycles. Specification: Bluetooth: 5.0 Bluetooth distance: up to 12m Audio input: 3.5mm AUX or Bluetooth or USB or RCA or TF card or USB flash drive Power amplifier chip: TPA3116 Output power: 50W x 2 (24V /4 load) Speaker impedance: 4-16 Frequency response: 20Hz-20kHz (1dB) Signal to noise ratio: 98dB Power supply: DC 9V-24V (voltage cannot exceed 24V) Power port: Support 5.5 x 2.1-2.5mm DC connector Size: 110 x90 x50mm/4.33x3.54x1.97" Note: 1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. .