The cassette adapter works pretty well. I bought essentially the same thing at a retail store for $27.99. What a rip-off! When I got home I looked on Overstock, bought this and returned the store-bought cassette adapter. The price cannot be beat! The sound quality is excellent. When the music is playing low you can definitely hear the gears of the cassette, but with the music at a normal listening level the turning gears are not audible. Thank you, Overstock!!