Vocalist Live uses breakthrough musIQ technology to directly analyze the output of any electric or pre-amplified acoustic guitar (no special MIDI guitars or hex-outputs needed). Then it generates the correct vocal harmony. The Vocalist Live 2 is a musically-intelligent hybrid of traditional chordal and scalic harmony modes meaning that the Vocalist Live musIQ harmonies stay true to not only the overall key and song scale, but also localized variations due to chords that aren't part of the global key. You've never heard anything like it!

Vocalist Live 4 Features:

• 3- or 4-part vocal harmony with no programming or learning curve - just sing, 
  play and let Vocalist Live 4's groundbreaking MusIQ technology do the rest
• Selectable voicing: unison, 3rd, 5th-above or below your lead vocal
• Built-in mixer with Vocal, Harmony and Guitar level controls
• Pitch correction with four adjustable parameters
• Guitar Reverb and Chorus with four adjustable parameters
• Vocal enhancement effects matrix lets you adjust up to five parameters of Preamp, Compressor/Gate,
  EQ, Lead Effects, Harmony, Reverb, Echo Delay and Guitar effects
• Store and recall up to 50 User presets; and select from 50 Factory presets
• 2+10-character LED display
• Major/Minor and Key Change Up/Down buttons with LED display
• Harmony, Effects and Preset Up/Down pedals
• On-board guitar tuner
• XLR mic /line input with level adjustment, low-noise high-headroom preamp and 48V phantom power
• 1/4" guitar input, 1/4" guitar pass-through and Guitar Ground Lift switch
• 1/4" line input and 1/8" AUX input for CD or MP3 players
• 1/8" headphone jack
• Stereo 1/4" line out and balanced stereo XLR line outs
• Stereo/mono output selector
• Road-rugged, all-metal chassis
• Power supply included