Instruct: Classify the given review into positive or negative sentiment.
Query: Terrible sound quality - especially for the price

Not sure if this unit is defective or if it is just built poorly, but using it as an external mic with a GOPRO HD Hero 2 was NOT what I was hoping for.The breakdown of issues in order of least to most severe:1, It is very quiet. Maybe only 70% of the volume that came from the built-in mic that comes with the GOPRO.2, Even with the muffler, it picks up any kind of wind and it overpowers the recording which makes it useless in an environment where there is any kind of air movement.3, This one is the nail in the coffin: It makes a very audible buzzing sound and it doesn't stop. It's a like three or so buzzes, then a pause and then a few more and so on.I probably could have dealt with the first two issues, but the constant buzzing is a deal breaker. I am sending this back for a refund.