Friends, I'm new to world of audiophiles.. I mostly listen to music through my Android Xperia SP which sounds good enough to me..I don't use CD players and neither do I know what good is a receiver.. Recently I decided to buy a mini HiFi system and finalized Sony MHC-ECL7D and while searching for the reviews, luckily stumbled upon this forum.. The things discussed here are rocket science for me..I want a good speaker -woofer system.. My requirements are nice and clear sound and heavy and deep bass.. It doesn't matter if it's a bookshelf or any other thing.. Please recommend me a good system within 20k..I read good reviews of Polk Audio Rti-a1 and swan m50w..Are these what I need? Thanks in advance..