I saw Al Dimeola some years ago using a GK2A equipped guitar and he pulled off blistering licks with a MIDI module tracking his playing perfectly. Yes technology has certainly improved a lot.

The old devices you remember bruno123 were pitch conversion devices that had to wait until a full cycle had passed through before they knew what the note was to send it out on MIDI. But that was no fun at all because of the horrible lag caused by the audio-2-MIDI conversion.