Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not Like They Used to Be!

Have owned a pair of Vibes for several years and have been happy with the sound, comfort and style. I recently bought a new set for my wife. The new Vibes, while looking the same, are not the same. The sound is shrill, with accentuated highs and poor base. Returned them and got my money back.