You would get better response if you posted this in what should i buy thread.I am new to this forum.I have Technics SU 500 - 40 Watts per channel
Technics SU-500 - Manual - Stereo Integrated Amplifier - HiFi Engine
can you suggest me bookshelf speaker new for this under budget 20K.
Look at Hifi mart's website Bookshelf/Monitor for bookshelf speakers. It's a 40 watt amp so should give enough power to drive the likes of Boston acoustics, Wharfedale
etc. there are loads of brands to consider. go and audition a few, carry along a few of your favorite CD's and try to see what suits your kind of music.
Also look at Bookshelf Speakers and here Bookshelf Speaker - TechnoGuru - Online Store