Aura Spectrum DI is the complete tone solution for the acoustic musician featuring award-winning Aura Acoustic Imaging technology that restores a studio-miked sound to your under saddle or sound hole pickup. Housed in a professional quality all-metal case, Aura Spectrum DI features a 3-band EQ, one-knob compressor, automatic feedback suppression with up to 3 notches, chromatic tuner, effects loop, plus a high-quality balanced XLR D.I. The included Aura Image Gallery software provides access to an ever-expanding list of instruments recorded using world-class studio mics and techniques. Aura Spectrum DI is not only incredibly versatile, but it also delivers the most realistic acoustic sound available for stage or studio. Features: Award-winning Aura Acoustic Imaging 128 pre-loaded Images for use with the most popular acoustic instruments Instrument Preamp with Balanced XLR D.I. out Volume, Blend, and Image Select controls Three band EQ One-knob compressor Automatic anti-feedback with up to 3 notches Built-in chromatic tuner with bypass/mute 16 user-configurable Image locations USB interface for Image downloading from Aura Image Gallery (software included) Feedback-fighting Phase switch Automatic D.I. Ground Lift 9-Volt Battery or optional adaptor operation