Hi All
Been trolling for a while. Great info on this forum.

I have a 2005 BMW X5 with NO nav but does have Bluetooth and DSP. My AMP died so I bought a recycled replacement DSP AMP from another X5. I installed the amp and I am getting sound now but two things:
1) the DSP options are not showing up in the display
2) the sound isn't as high quality as before

All I did was swap the units. I did not disconnect the battery or anything else. Is there some pairing/matching I need to do?

Thanks in advance for your help.

Khan