he Tube MP Studio V3 features ART's new V3 (Variable Valve Voicing) Technology -- found only in ART microphone preamplification systems. V3 provides optimized reference points to begin the recording process. The V3 presets were created and fine-tuned by some of the industry's top studio and live-sound engineers, along with our veteran engineering department. V3 allows you to select between a multitude of preamp settings designed for guitars (electric and acoustic), keyboards, bass guitars, drums, vocals and more. V3 gives you incredible presets for every instrument you record, so all your recordings will sound professional. Need to tweak the presets? Go right ahead -- hone your perfect tone! That's the power of V3. V3 also incorporates ART's OPL (Output Protection Limiter), which precisely and accurately controls and maintains the output peak signal. The OPL circuitry is crucial in protecting the next link in a signal chain - such as a hard-disk recording system or a sound card. The Tube MP Studio V3 features all the functionality of its predecessor, the world's number one Tube Mic Pre, the Tube MP. Phase Reverse, +48v phantom power, clip LED and a +20dB switch are all included, as well as an analog VU meter for visual tracking of the signal.