BT180-A is a multifunctional audio decoder, which integrates audio decoding and FM signal transmission functions, and is also compatible with FM radio functions. Bluetooth audio, USB decoding and playback, AUX input, PC sound card, FM transmission, FM radio, six-in-one functions. The chip used is SOC, which integrates a 32-bit MCU and an aDSP specifically for audio decoding. It uses hard decoding. FM transmission function: It can transmit mobile phone Bluetooth audio, USB, AUX, and PC audio signals through FM, and then listen to them with the radio. Decoding and playback function: It can connect mobile phone Bluetooth audio, USB, AUX, and PC audio signals to the power amplifier through the 3.5 audio output port. U disk decoding format: 1, supports playback of MP3, WAV, WMA, and FLAC formats, supports breakpoint memory and track memory functions, and supports up to 128G. Bluetooth reception: 1. Bluetooth version 5.3, supports HFP/A2DP/AVRCP//GAVDP/IOP/SPP/BLE, distance is about 10M, 2. Class2 4dbM frequency range is 2.4G--2.480G. 2. Supports all bit rates 11172-3 and ISO13813-3 layer3 audio decoding. 3. Sampling rate support (KHZ): 8/11.025/12/16/22.05/24/32/44.1/48. 4. Supports EQ sound effect settings. 5. Supports single song loop playback, the entire U disk file is played in sequence, starting from the first song by default. The stability and sound quality of the system are further guaranteed. The audio signal can set the EQ sound effect mode to improve the quality of FM transmission. Users can set their favorite mode according to the playback quality of the music.Bluetooth transmitter: 1. Bluetooth 6.3V, backward compatible with 4.0 version receiving devices. If the connection fails, check the Bluetooth version. PC sound card: Driver-free USB sound card function, you can use USB to connect the computer and the player, and you can connect the computer audio to the amplifier and send it out through the FM transmitter for the radio to listen to. AUX audio input: The audio signal of other players can be input through the AUX input interface, and then sent out through the FM signal, and at the same time Radio: 1. Display the number of radio stations received, the current radio station number, the current radio station frequency, and memory storage. 2. Receiving frequency 87.5MHZ--108MHZ, does not support Japanese frequencies. 3. Automatic reception/manual FM. 4. Onboard radio antenna, or external antenna (self-provided).FM transmitter: 1. Stereo transmission, if the input is stereo, it transmit stereo, if the input is mono or mixed, it transmit mono or mixed, and it cannot be set. 2. Stereo separation 35dB. 3. Transmitting frequency 76MHZ--108MHZ, supports global frequencies. 4. Set the frequency step to 0.1MHZ. 5. Transmit power 0.5W. 6. Transmit distance is related to the environment and the receiving sensitivity of the radio. Of course, the biggest reason is the transmit power. Generally, it is 200 meters to 500 meters. Power supply: 1. Onboard lithium battery, 2800 mAh, can work for more than 8 hours without connecting headphones, and can be used while charging. 2. Charging voltage, 5V/1-2A 3. -C charging cable. It can also be connected to the amplifier through the AUX output port. EQ sound effect mode function: normal, rock, jazz, country, , classical. 3. Support EQ sound effect setting. Color: Blue Material: PCB Package Contents: 1 * Multifunctional Audio Decoder Only 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.