Good speakers for good music

I am particularly happy that I purchased my new iMac a week ago. With a better speaker, I come to sit down and appreciate music much more. Seriously! As a music major, I've been suffering from poor speakers since... I listened to music! I am not a fan of headphones and did not invest in a proper one. My HP personal computer does not give good effects. The iMac does not have a spectacular speaker, but it's enough to distract me from my readings when it plays youtube music. Nuances... ahh... yea...