The Universal Audio VOLT-4 USB Audio Interface Volt 4 is the perfect audio interface for creative collaborators who want to easily record audio projects with professional studio sound. Plug right into your Mac, PC, iPad, or iPhone and Volt just shows up, ready to capture your inspiration with professional sound, courtesy of Universal Audio. From the team that brought you the game-changing Apollo interface, Volt 4 delivers superior studio sound quality with more character and tone than any USB interface in its class. Few sounds can compare to a vintage Universal Audio 610 tube preamp, the same preamp used to record everyone from Ray Charles to Van Halen. Volt 4 gives you the rich, full sound of this iconic UA preamp, thanks to its built-in tube emulation circuitry, a UA exclusive. Start creating music with the best gear ever made using UAD Spark, an ever-expanding library of world-class plug-ins and instruments for a low monthly price. UAD Spark plug-ins run natively on Mac and will give your recordings the professional analog tones heard on your favorite albums. Volt 4 gives you simple 4-in/4-out audio connections. Just plug your mics and guitars into the front panel preamps, and use the line inputs for synths and drum machines. Then connect your speakers or headphones to monitor your audio with no latency. Product Specifications: Computer Connectivity: USB 2.0 Form Factor: Desktop Simultaneous I/O: 4 x 4 Number of Preamps: 2 x mic Phantom Power: Yes A/D Resolution: Up to 24-bit/192kHz Analog Outputs: 6 x 1/4" TRS Headphones: 1 x 1/4" MIDI I/O: In/Out USB: 1 x USB-C Compatibility: Mac. PC OS Requirements - Mac: macOS 10.14 or later Bus Powered: Yes Power Supply: USB bus powered