Features: 1.STABLE AND STURDY: Wood grain appearance with sturdy shell, 5.0 Bluetooth dual 50W channels, stable connection, durable and beautiful 2.MULTIPLE DECODING: Support U disk and small memory card playback, support multiple format decoding (MP3, WAV, APE, FLAC), MP3 sampling rate from 8-48K, bit rate from 8-448Kbps, bit width is 16bits, channel is mono stereo; WAV sampling rate from 8-48K, format is WAV ima, for Microsoft AD PCM, or WAV PCM, bit width for16bits; FLAC sampling rate from 8-48K, bit width is 16bits; APE support FAST or NORMAL encoding, bit width is 16bits 3.WIDE APPLICATION: The power amplifier can be connected to mobile phones, computers, tablets, notebooks, MP3, TVs and projectors with AV audio(lotus socket) or 3.5mm headphone output jack. Various mainstream Bluetooth devices on the market can be connected to realize wireless transmission 4.AUDIO INPUT: Support 3.5mm stereo sound input, RCA stereo sound input, small memory card, U disk, USB audio input(can be connected to computer, mobile phone, OTG, tablet OTG) 5.STABLE AND DURABLE: Power amplifier come with stable structure, excellent performance and long service life Item Type: Mini Bluetooth 5.0 Power Amplifier Feature Type: 2.0 Stereo Output Power: 50W and 50W Power Supply: DC9V-24V Bluetooth Distance: Approx. 12meter / 39.4ft(barrier free) Bluetooth Protocol: 5.0 Product Size(LxWxH): Approx. 110 x 90 x 50mm / 4.33 x 3.54 x 1.97in Audio Input: 3.5mm stereo sound input, RCA stereo sound input, small memory card, U disk, USB audio input(can be connected to computer, mobile phone, OTG, tablet OTG) 1 x Mini Bluetooth 5.0 Power Amplifier 1 x User Manual