I bought this cassette recorder based on the reviews of other customers. I was looking for a cassette recorder with accurate pitch duplication.I had also ordered two Sony WM-GX221 Walkmans which both were off more than 30 cents sharp...and off by the same amount.The Panasonic was a little less off (less than 30 cents sharp)so I decided to keep the Panasonic.If anyone finds a walkman sized cassette recorder with better pitch accuracy, please let me know. it's been really difficult to find something better than the old Sony walkmans that I had before (which Sony no longer manufactures).