[OLD MODEL] Korg AW2PLUS Orchestral Clip-On Tuner Transpose feature (C, E?, F, B?) for transposing brass and woodwind instruments Clip-on chromatic tuner attaches directly to any instrument for cable-free tuning Korg's proprietary clip design safely fits a variety of instruments. Two clips (large and small) accommodate a variety of orchestral instruments Double ball-joint allows multi-angle positioning with far greater mobility for the display section.