Produce with Best-in-Class Audio Quality. Volt 476 delivers superior studio sound quality, with more character and tone than any USB interface in its class. Get Classic Sounds with Vintage Mic Preamp Mode. Few sounds can compare to a vintage Universal Audio 610 tube preamp, as used to record everyone from Ray Charles to Van Halen. Volt 476 gives you the rich, full sound of this classic UA mic/line/instrument preamp, thanks to its built-in tube emulation circuitry, a UA exclusive. Control Volume Peaks with UA Compression. The 76 Compressor features three perfectly tailored presets to tame voice, guitars, synths, and drum machines. Just plug in, pick a setting, and play.