Instruct: Classify the given Amazon review as either positive or negative.
Query: owned 4 of them

I've owned four (yes four) Rio Carbons. I have purchased two and both of them failed within 6 months. The front panel controls are easy to use and in general it is a nice player. This is an excellent sounding player, unfortunately it has the following defects- 1. it is subject to failure from shock and a portable player WILL be dropped at sometime or another. 2. It has a combination volume control and selection wheel which is both over sensitive and too fragile if used during exercise or physical activity. 3. It is SLICK and (see above) has no attachment point for a lanyard or other device to prevent dropping it.I had to upgrade the firmware upon receipt of all four players and cannot figure out why Rio couldn't get that done at the factory especially since two of these were refurbished warranty replacement units that came out LONG after the firmware upgrade.Rios customer service is very good and I wish the player had been nearly that good