The GD-6 Acoustic Guitar is based on a Guild D-40 custom edition electro-acoustic guitar.
We recorded it with a pair of microphones and using the built in pickup.
We sampled it very deeply, all frets of all strings with upstrokes, downstrokes, round robins, releases, staccatos, mutes, palm mutes, hand blocks, slides, hammer ons, pull offs, retriggers, fretnoises, percussions other articulations. All of these details allow us to reproduce the real playing of a guitar player, and easily.
There are basically 4 modes (that you can choose using keyswitches, G5 to C6), the solo mode that allows to play melodies, the chord mode that helps playing strums or picking very easily, the patterns mode that does all of the strumming or picking for you and the MIDI mode that allows you to use your preffered midi guitar controler.