Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good value, but bad bass and high notes

For the first year or so I had the headphones, I noticed nothing wrong with them. I guess I was so thrilled to have a set of "pro" headphones that whatever happened I blamed on the computer. However, after noticing that especially high notes did not come out crisply but instead were just scratchy static, and very low bass made the same static-y sound, I sent them to Sennheiser to have them replaced, thinking I must have damaged them somehow. The new ones are just as bad... I don't know why, but they are a fine set if you aren't annoyed at a bit of static, or if you arne't that picky, but quite honestly I wouldn't recommend them.