You can set up "Patch Level" parameter for each patch, so that the volume can be kept constant even when changing a patch. The "Level" parameter of ZNR/EQ module can also be used for a volume adjustment.
A setup of "Bank Hold" function is considered to be the cause. This is a very convenient function, when using only one bank in your performance. When unnecessary, please turn off "Bank Hold" function.
If display is blinking, when changing patches, "Direct Load" function is turned on. Please turn it off, referring to "Reserving the next Patch (Direct Lad) " in operation manual.
Expression pedal operates also as an on/off switch for assigned effect by stepping on. Please step on ahead more strong. Refer to "Adjusting the expression pedal" in operation manual.
Please check operation, connection and output level of the playback equipment (CD player etc) of sound source to sample. Also, volume must become too small when the connection cable is "with resistor" type. Please use "no resistor" type cable.
Amp Simulator is independent function on 707. You cannot store the parameter to each patch programs. It means "Amp simulator is always on or off" even you change the patches.