Got the new FBV 3 to go with my Amplifi 150 in AMPLIFi Posted May 28, 2016 One Problem exists with the Amplifi and the FBV Express MKII. It doesn't Switch the sound until the button is released. And with my FBV shortboard MKII and the Amplifi same problem. So it is very hard to change the sound exactly, because you have to press and release the button until the board switches the sound. Can anybody who has FBV3 with the Amplifi tell me, if the FBV 3 allready switches the sound, when the button is pressed down? Or do you also have to press and release the button until the sound is switched?