The BLUESTiCK CLASSIC has the same performance as the standard BLUESTiCK. The only difference is the position of the microphone which reproduces the guitar sound. It is not in the middle of the bridge, like the regular BLUESTiCK, but shifted by 8 mm to avoid piercing the central brace of a fan braced guitar top, which is very important to the performance of the guitar top.