Just removed from my E85, 2004. Perfect working order, but due to change to a different OEM head unit, my CD changer cables no longer connect to DSP amp. Known issue and I could sort it with coding, but selling as rarely used.
This unit allows audio streaming and hands free calls and also has the extra Grom leads with extensions for aux connector and USB charging of phone. The DSP adapter connects through the coaxial cable connecting a CD multi changer and a Coaxial DSP amp. Coaxial cable not included, but if you have CD changer and coaxial connection DSP amp you should have it anyway.
Complete with microphone, Grom/DSP instructions and a ‘cubby hole’ for back of central tunnel with cutout to fit USB & Aux Socket if you want to install it. Also extension leads for USB & Aux Sockets and for microphone (Note: when originally installing I trapped microphone lead in door :headbang: Proper solder/heat shrink repair - works fine. Dependant on how mic cable is routed you may need a longer extension lead to one provided)
This is the ‘boot installation’ model not for fitting directly to back of head unit. Connects to CD changer cables. See my original installation thread below, also plenty of info on Grom website.
https://z4-forum.com/forum/viewtopic.php?t=130700
Components have been carefully removed and are complete with DSP adapter extended power supply cable for ease of fitting in E85, as detailed in thread. I will label connections too.... just to make it easy
New cost for these components is currently £215, the DSP Adapter alone costs £64
For sale at £90 plus £5 carriage (or collect, I live in Cornwall)
This unit allows audio streaming and hands free calls and also has the extra Grom leads with extensions for aux connector and USB charging of phone. The DSP adapter connects through the coaxial cable connecting a CD multi changer and a Coaxial DSP amp. Coaxial cable not included, but if you have CD changer and coaxial connection DSP amp you should have it anyway.
Complete with microphone, Grom/DSP instructions and a ‘cubby hole’ for back of central tunnel with cutout to fit USB & Aux Socket if you want to install it. Also extension leads for USB & Aux Sockets and for microphone (Note: when originally installing I trapped microphone lead in door :headbang: Proper solder/heat shrink repair - works fine. Dependant on how mic cable is routed you may need a longer extension lead to one provided)
This is the ‘boot installation’ model not for fitting directly to back of head unit. Connects to CD changer cables. See my original installation thread below, also plenty of info on Grom website.
https://z4-forum.com/forum/viewtopic.php?t=130700
Components have been carefully removed and are complete with DSP adapter extended power supply cable for ease of fitting in E85, as detailed in thread. I will label connections too.... just to make it easy

New cost for these components is currently £215, the DSP Adapter alone costs £64
For sale at £90 plus £5 carriage (or collect, I live in Cornwall)