Adopts the new version U segment transmission chip which has a lower power consumption. The ARU-03 now features the updated audio connection head design (60 degrees rotatable) and compatible with ANY guitar or bass at an extremely compact size. Virtually no audio transmission delay, the system features automatic code matching between the transmitter (color black) and the receiver (color white) so they're ready to use - just turn them on! It has five built-in channels, and will not interfere with other ARU-03 systems even when used simultaneously in a gig. The ARU-03 - the perfect guitar accessory and gig companion!