The 650's are an enigma, their best quality is their worst quality. Properly amped they're very clean, crisp, and clear without being fatiguing, but they're still liquid and relatively dark, qualities some dislike. They don't excel at any one thing really, in fact, the only thing they really excel at is making me love them. Even my GF is jealous, "pay attention to me" she yells, "hold on, this song is almost over", I say. She understands though, I let her listen to them once in awhile, she had to admit sheepishly that they sounded "amazingly good". Do other headphones sound better? If I could I would improve these headphones for certain songs, but every time I've tried to find better I come back to them, there's just something special about the music when it comes from these headphones.