Instruct: Classify a given Amazon review as either positive or negative.
Query: Headset makes you sound like you're in a tunnel

I bought this headset because I had purchased a Jabra ear bud headset for my cell phone and I love it. I needed a headset for my regular phone since I spend a lot of time on conference calls. The headset was very reasonably priced, but the first time I used it, the people on the call said I sounded like I was in a tunnel and muffled. Needless to say I'm no longer using it.