Zedd -- Zee Views at My New Mansion Are ZICK!

DJ Zedd's mostly famous for one hit here in the U.S. -- but that was more than enough for the guy behind "Clarity" to snatch up his own baller Hollywood Hills home.

Real estate sources tell us the deal was closed earlier this month for $3.9 million ... about half a mil less than the original listing price.

The 3,443 square foot pad boasts 4 bedrooms, 5 bathrooms, full security system, and of course ... the new must-have accessory -- heated salt water pool.

Dude knows how to drop the bass ... and a whole lot of dough.