Welcome to our store! 1. Easy Connection: The HiFi audio quality Bluetooth amplifier board is easy to connect, boasts excellent sound quality, a long lifespan, and can provide you with long-lasting companionship. 2. Long Transmission Distance: Bluetooth 5.0 transmission solution, stable signal, long transmission distance, intelligent compatibility with over 99% of devices, meeting diverse application needs. 3. Direct Reading Function: This power player is equipped with a U disk and a small memory card that can be read directly. You can copy your favorite music to the U disk and small memory card for playback. 4. Powerful Chip: The maximum output power can reach 80W+80W, which is sufficient to power most home computers, bookshelf speakers, and passive indoor speakers (4-16Ω). The sound is clear and pure, with no audible noise even at high output power. 5. Connected Devices: It can connect to mobile phones, computers, tablets, laptops, MP3s, TVs, projectors, etc., with AV audio or 3.5mm headphone outputs. It can also connect to common Bluetooth devices on the market for wireless transmission. Item Type: Mini Amplifier Weight: 300g/10.6oz Product Material: ABS Function Type: 2.0 Stereo Output Power: 2 x 50W (24V 4Ω load) Working Voltage: DC9V-24V Bluetooth Distance: At least 12 meters (obstacle-free) Bluetooth Protocol: 5.0 Audio Input: 3.5mm stereo input, RCA stereo input, small memory card, U Disk USB audio input (Can connect to computer, mobile phone, OTG, tablet OTG) Package List: 1 x Mini Amplifier 1 x User Manual Satisfaction Guarantee: Customers are our top priority. If you find any issues with the product, please contact the seller immediately. We strive to provide satisfactory after-sales service.