Instruct: Classify a review into positive or negative sentiment.
Query: Excellent sound quality, but unconfortable for new earbuds users

Basically I love these earbuds. They sound awesome. Quite frankly, I've discovered tons of effects and notes in songs I had never heard before. Unfortunately, these are the very first earbuds I have ever used, so I really need getting used to have them practically inside my ear. Plus, it's true: you can hear the cable move when listening to your music, so joggers should have that in mind. It's however a very light noise.