Comes with software, documents and friendly technology support. For more information please refer to our github(view the link comes with the goods). On-board a 3.5mm high-end headphone jack and two balanced out(X- ,X+) output, allow you free to play your music through Raspberry Pi to another terminals. Support all Raspberry Pi music playback systems, LibreELEC, RuneAudio, Volumio, Moode, PiCorePlayer, OpenELEC, Raspbian, Ubuntu etc. Support playing music from a hard disk or over the network. Build-in a high-performance audio DAC ES9038Q2M chip, sample rates up to 384-KHz/32-Bit(PCM), DSD Lossless High Resolution Digital-to-Analog Converter. Paired with 3 Texas Instruments SoundPlus HiFi audio operational amplifiers, afford 2.1vrms output. The HiFi DAC Pro Hat compatible with all Raspberry Pi Boards via the 40-pin connector, Connects directly to the Raspberry Pi board, no additional cables required, no soldering. Easy to get more beautiful and fantastic sound.