Good info and write up there /\ /\ /\ , thanks for taking the time.
I have to say, I do a lot of DJ'ing with an awesome PA system, and I have no complaints of sound quality on my Android, but there are several differences on my Car compared to the majority.
My Car never had BOSE from the factory, so I had no F/O issues the stock MB Speakers were plugged straight in at the back of the H/U, as they were on my old COMAND. I expect this means that they are regular 4 Ohm jobbies, other guys report strange Ohms readings from the BOSE stuff
I didn't bother measuring mine, as the whole system sounds fine as is.
As I didn't have the BOSE to jury rig, this also means that my Rear Shelf Woofer, and Dash Centre Speaker are all working right off the bat
I bought the Erisin unit rather than Xtrons on the advice of a UK ICE Installer that I know, and looking at the connections on the back, they are using a different Main Board, so maybe that makes a difference to sound quality
It definitely sounds as good, if not better than an expensive Pioneer full install in my V Class Minibus, also sounds as good, if not better than the factory unit in my C Class.
Later I may re wire the Rear Woofer through a small Amplifier, via the Erisin's SUB Out line, just so I can get better Bass Control by using the Sub Slider in the Graphic Equaliser, but for a Car system, that is really me just being picky
I gave up spending mega bucks on Car systems years ago, they never sound as good as a Concert Hall due to Car Acoustics, I spent thousands on a full install on my Range Rover years ago, yeah it was loud, yeah it sounded good, but nothing like as good as my home Hi Fi or my Disco PA
My MB Antenna Amp Powers up straight from the Erisin. My FM reception is brilliant considering the remote area in which I live, I am yet to wire up the DAB, as I will be using the DAB Antenna in my rear screen via the MB Antenna Amp, so as the Car never had DAB I have to run a new Coax from behind the Headlining all the way to the front to the H/U. I expect DAB will be as good as my Minibus when in Inverness but DAB is shite where I live anyway, same with DVB TV
The only D2B F/O on my Car was the CD Player and the CTel Phone, both of which have been junked. Phone is Bluetoothed direct to H/U and working fine even just on the H/U's Mic atm, although i will be connecting it to the MB one.
My Steering Wheel Buttons all work fine and change tracks ok when playing from my SD Card. Yes I have to repeatedly press Volume up and Down, but you can configure the Erisin to boot at whatever Volume you wish
I am yet to get the Dash Display working, some say they get Track and Radio Station Info, but mine hasn't but time on SDS Codings may get a result, I'm not that bothered if it doesn't as the Screen is bigger on this unit anyways.
I have no Current Drain issues, but I have set various SDS Coding in different modules to "COMAND Not Present", which is the correct way to do this install.
Can Bus stuff like Boot Up, Reverse Gear, Steering Wheel, Speed Sensing etc is all working fine.
Not much else to report as I'm too busy to go much further atm with the S Class until I get more spare time