There are many aspects to MP3 Player Ratings that you should be aware of before you make a purchase or before you give any reviews on a player.
More importantly, there are numerous functions displayed by manufacturers to help you know what their player is capable of.
Below, you will find a list of the primary functions used for rating systems.
S/N Ratio
This is the most important aspect of any rating for digital audio players. This is the Signal to Noise ratio, and this is what determines the quality of the sound. The higher this number, the better. 90dB is roughly the standard for good quality music.
Supported File Formats
This represents the type of files that can be played by the device. The more file formats, the more flexible the MP3 Player. At the very least, the device should support MP3 and WMA files.
Internal Storage Space
This is the amount and type of data storage available within the device. In this category, you will find either Flash Storage or Hard drive storage. Flash Storage makes use of Flash memory drives, which contains no moving parts. These devices tend to range from 128mb to 1gb.Hard drive based systems contain small hard drives and have moving parts. Therefore, they may skip. Hard Drives can store anywhere from 1gb to 60gb of data.
External Storage Space
This is a rarer option found for Flash based MP3 players. External storage space consists of chips or flash memory drives that attach to your MP3 player. The Sandisk Cruzer is a good example of a device using External Storage Space.
Output/Input
Output is what you use to listen to the music from your player. These are either ear phones, ear buds, or head phones. Input is how you get music from your computer to your player.
USB
This is the most common method of transferring files from your computer to your player and back again.
Batteries
Systems come with either an internal or external rechargeable battery or the ability to use standard batteries such as AAA. Long battery life should be a primary concern.With the full understanding of the concepts listed above, you should be able to easily read or make MP3 Player Ratings.