A little update:
I can "hear" the problem in Mame/FBA/Master System/Amiga games and i've tried these settings without good results:
-I've setted PicoDrive on Master System and audio sounds really bad. I can't hear a lot of sounds ingame.
-Using GenesisPlus GX there are some signs of improvements, but i can't hear some sounds ingame.
-On Amiberry some samples are "cutted". This is really strange.
-On Mame and FBA there are same GenesisPlus GX problem, but fortunately not in all games.
But the question is... Why there are these kind of problem only on Samsung TV T24E390EI? In other TVs works fine.