[Euro CL9] Audio upgrade advice

[Fredoops]

So the real question is why?
I have the same vehicle (CL9 05 Lux) and found the fact it did not read MP3 most annoying.
Particulary as our CRV had that ability.
The sound quality stock is more than enough to make you deaf if you want to be, but no MP3/iPod was no good.
I installed an input gizmo in the underneath flip box.
It is hidden, and looks stock, and works with steering wheels controls.
It does not pick up Bluetooth or stream but the ability to charge phone is more helpful.....
What music format you listen to is the first question...
Noise insulation is the second.
Motivation third.

It's not the "volume" that's the problem

The oem sound processor (Panasonic unit) is crap, clarity and mid range simply isn't there. And the factory EQ is... Funny, since it sends lots of bass down the rear coaxial speakers even tho it's low rms of 10w, so the whole thing sounds muddled.

Also most aftermarket aux plugs are poorly amplified. Which makes it even worse if you got that funny factory EQ setup.

Also the front door is not insulated. Which is kinda odd since the factory door speaker is actually a woofer since it's a split system.

You can fix the factory system by adding a DSP but that would cost more than a single din setup