Empeg haven't programmed the DSP. It is a masked, pre-programmed part, with programmmable features. The number of frequency centres is not programmable; what is being presented by the empeg player is what is available from the DSP itself.

OK, my mistake, I shouldn't have used the word "program", I should have said "set up". But nonetheless, the empeg could still present a single 20 band equaliser, or a 10front/10back equaliser to the user, but use the DSP in 5/5/5/5 mode with frequency centres, attenuations and Q values chosen to produce a close approximation to what the user has selected. Obviously if the UI is presenting a single 20 band display, then the parameters for all four channels would be the same.

Richard.