im looking at installing a dsp amp in my x5 i heard the dsp in an 5 series and it sounded great!

dont get me wrong what i have now is nice but would also like the dsp options.

now my questions. my radio has just an audio button and no dsp button will i also have to replace my radio as well as the amp.

i will be replacing the amp in my 2001 bmw x5 it currently has the alpine harmon and kardon (spelling?) amp


thanks in advance for your help