Question on anyone equipped with DSP and using GROM
 

So, I have 03 X5 with navi and DSP.
I would like to install GROM by removing cd changer and need to verify whether I need DSP conversion kit or not.

On the back of cd changer, there are 3 connectors but only 2 are being used.
1. 3 pin connector -> connected
2. 6 pin connector -> connected
3. SPDIF coax cable -> not being used

From my understanding, since SPDIF connector is NOT used, I have "analog DSP", therefore I don't need DSP conversion kit.

Is this correct?

Give this a look. http://gromaudio.com/grom_application_guide.pdf

I have DSP and have a GROM installed in my X. My X doesn't have the Nav screen, just the MID. I used the DSP converter because my X didn't have the 6 pins connector. The DSP converter is used in conjunction with the coaxial cable that is connected to the DSP amp.

Thanks Quicksilver and upallnight.
After few more searches and readings, looks like DSP converter is not needed if the DSP isn't using coaxial cable.