mercedes w203 + android station - Selection of an amplifier for the harman kardo

Hello

I have a Mercedes W203 with factory Harman Kardon sound system. I installed the radio:



The problem is the factory fiber optic installation of the original H&K amplifier. I have no sound now, because the factory radio sent a signal via optical fiber to the amplifier in the trunk, where the entire loudspeaker beam is also located.

I thought to drag the chinche from the radio to the trunk, where the factory speaker system is located, and use an aftermarket amplifier:

BOSCHMANN Z-8528X

PLN 429

It is 5-channel. I would like to power the factory H&K speakers - front door, rear door and a woofer from the shelf.

Is my way of thinking correct? What do you think about the mentioned amplifier?

Do you connect additional speakers to the channels? Ie in the board, additional in the shelf? Is it better to leave it alone and connect the front, rear and woofers, as I wrote earlier?

Maybe there would be a better amplifier in a similar budget?

H&K + bushman? Man, they will bite you here for such a combination ... . Provide the model of your current radio, ideally whether it has coaxial output.

China Radio From Aliexpress:

2017 HD 1024x600 Quad core Car DVD Player for Mercedes W203 android 7.1 c200 C230 C240 C320 C350 CLK W209 GPS Radio WiFi 3G
http://s.aliexpress.com/NrU7FFzQ
(from AliExpress Android)

It has no such output.

I found a used kruger martz km1005 for a similar price.

The budget is small, but help me choose something

Wouldn't it be easier to buy an analog to TOSLINK converter and connect to the factory amplifier with a fiber optic cable?

I am not sure if the original one is functional. Someone before me messed with fiber optics, i.e. he replaced the original comand with an ordinary standard radio w203, made some workarounds, took the changer, took the gsm module.

That's why I bought this android station, due to the functionality and costs of restoring the factory system to live.

My factory H&K amplifier:

Hello. Could I know how you solved the sound problem because I have the same problem?

I join the question, someone has figured out how to connect an android radio with the Harman Kardon installation?

I two have the same problem run in to it today