Summary: I had one of these that lasted 3 years before the cord connection frayed off. I tried the Sony CPA-9C, but my '99 Corolla cassette deck's auto reverse feature was too finicky. Bought this and everything works fine. If you're using an iPod, I suggest adding a PocketDock SoundStation to eliminate any volume problems.
Summary: I said this in a comment but I felt compelled to make sure everyone saw it: "Weird, mine's been fine for a year and I'm fairly picky. Maybe its the electronic you're using that has poor quality or you got a bad egg? I use a Sansa Fuze with it in my car, it works really great." As soon as I turn my music up a little the "fuzz" sound is gone and hear pretty decent quality and I can play it very loudly with little distortion.
Summary: This product was great at first, the sound was perfect. A few months later I noticed the quality was slowly getting worse. A year later and I'm on amazon searching for a new one. The sound is so muffled that I can't hear the lyrics from many songs, esp. songs with any synthesizers. I would not recommend this particular adapter to anyone who wants to use it for more than a few months.
Summary: First of all, something like this should cost less than $7, $10 at the most. Initially, the spindles makes squeaky noises, so I open the unit up to see how I can stop the squeaking. I soon found out that the spindle served no purpose at all for the particular head unit in my car (some tape decks require certain amount of tension in the spindle or it will stop). So I took out the spindle and the thing is as quiet as it could be.
Summary: and this will give you an idea of the sound quality you will get from this particular product. While it delivers as far as getting your MP3 player to play through you cassette system, the very poor and muffled sound quality offsets this benefit. As far as cassette adapters go, I've gone through a few and the Sony brand has delivered far superior sound quality at the same price. While Maxell does make fine quality cassette tapes, I would avoid their cassette adapter.
Summary: When I first saw all the reviews, i though this was the right cassete adapter for me... I ordered one to use on my car with my Ipod.. I received yesterday and when I tested on my car..... GEEEEEZEEE, the quality of sound is HORRIBLE!! songs sounded like my grandmother singing in the shower! I went to walmart and got the "black panasonic cassete adapter" for 10 bucks... I works just fine!!
Summary: I do not leave feedback of any kind on amazon.com, but this time as I was listening to my car audio today, I was compelled to leave one for others. This product is probably the worst of any electrical equipments I bought for mp3 player/audio system. Its sound reproducing/transmission from mp3 player to car audio is of inferior quality. It does not balance well the low/high frequency sounds, resulting in dampened sound with absolutely no clarity.
Summary: This product simply worked as advertized. The quality of music from my mp3 player through my car's premium sound system does not appear to be degraded in any way. If you have a cassette player on your car's sound system and you enjoy listening to your mp3 player then this product is a must.