great little speakers

Check out ACI, hard to audition since they are a direct dealer, but their speakers tend to have the sound you describe.

Spendor 3/5a's. Classic design - long in production. Clean, clear, neutral sound. Good bass for tiny box. No earbleeds with these - and they are available used and very reasonably priced.

Looks like you are located in Belgium?
I don't know if can get to audition Green Mountain products but their Europa model is supposed to be excellent. Fits the bill for what you are asking. I have their floor standing model & it is just excellent. FWIW.
Here is their website:
http://www.greenmountainaudio.com