Instruct: Classify Amazon reviews into positive or negative sentiment
Query: did not enhance recording quality for olympus recorder

I bought this external microphone in addition to the digital olympus voice recorder dm-520 that I already owned, hoping it would enhance the already impressive microphone in the recorder. Well, it did not, the recording sounded the same with or without the external microphone. Good news is that the sound of my olympus recorder is already amazing, bad news, I had to send the microphone back. However, for someone who wants to enhance the recording quality of an old pc or recorder, this external microphone might do the trick.