Guitars
Internal Combustion Guitar
The internal combustion guitar:
Your touch sends signal to a small amp (6 watts or less) or processor combo
The small amp sends the conditioned signal back to the Internal Combustion Guitar
The Internal Combustion Guitar power driver reenergizes the now harmonically enriched and colored string tone
The ICG looks like a pretty interesting innovation. According to the luthier, Woody Bruce, it allows you to get great tone at very low volumes. Hear Woody B discussing the guitar:
(Thanks David!)