I just bought a 2007 Prius package 2. Stock audio system. I've had it for a a few days and realized the audio system sounds terrible. I just want better clarity when I play my music loud. Not super concerned about bass so I would rather not start with a sub. But I like a lot of treble and clarity. Should I get new speakers? Amp? By the way I am a complete newbie when it comes to audio so please make what you're saying easy to understand. Also, I am on a budget. Would like to spend under 200 if possible? I don't want to install it myself so also need to know how much installation is for all these things. Thanks!