The ART Tube MP StudioV3 Mic Preamp features ART's V3 (Variable Valve Voicing) technology that provides optimized reference points to begin recording. The V3 presets were created by some of the industry's top studio and live-sound engineers, along with ART's veteran engineering department. It allows you to select among a multitude of preamp settings designed for guitars (electric and acoustic), keyboards, bass guitars, drums, vocals, and more. It also features an Output Protection Limiter (OPL) to control and maintain the output peak signal; crucial when recording to hard disk or using a sound card. Also can serve as an exceptional direct box for impedance matching or simply improving the sound of any instrument plugged into it.