 The G-10 had two assignable knobs and an assignable whammy bar and it used six strings, all the same gauge [thickness], which sensed both right- and left-hand input.The fact that the strings were all of the same thickness made the instrument feel substantially different for a player, in contrast to the typical guitar, and may have hindered the instrument's acceptance.Both the SynthAxe and Yamaha G-10 have been discontinued.