Hi Aero,
It sounds superb as you’d expect with a Blaupunkt
No need for an extra amplifier, at least I had no need of one
No extra cables needed, plug and play
However, be aware that when you fit it to the standard wiring, it’ll drain the battery even when not in use, as it’s on a constant live feed (someone smarter than me can probably give a better explanation). When I get a moment I’ll change with wiring so the live feed is switched off when the car is so the stereo isn’t drawing power when not in use. I found a guide here on the forum on how to do it, just haven’t had time
. For the moment I leave a battery trickle charger on when not in use anyhow so it’s not a problem, but you’ll find a flat battery if you fit the stereo and don’t use the car very often.