Lottery Winner would buy what kind of Stereo Gear

If you were to win the Powerball or Megamillions what would your stereo system consist of and why?
Why buy a stereo when you could travel the world listening to your favorite artists live?
Would have to buy a house and room to put it in first, then see. I would start out with what I have but definitely be curious about how I might improve if money is not an object. I would not just blindly go and spend another 10s of thousands or more on new stuff just because I could.