5-Band Adjustable Equalizer

Customize your player’s sound by cutting or boosting the levels across 5 frequency bands. Comes with presets like Rock, Jazz, and Trance.

5-Band Parametric Equalizer

Control not only the output level of 5 frequency bands, but also the mid-point and width of each band. Parametric equalization offers the most precisely customized sound available.


The player can be set to automatically keep its contents identical to the collection you have on your computer every time it connects. It also has settings to synchronize with certain parts of the collection or perform no synchronization at all.


Bitrate denotes the number of bits per second used by a digital music file. The size and quality of a compressed digital audio file is determined by the bitrate used when encoding the file. Generally, the higher the bitrate used, the higher the sound quality, and the larger the file size. For example, a bitrate of 96kbps (96,000 bits per second) is generally thought of as "CD quality" for WMA audio files, and takes up about 0.75 megabytes (MB) per minute of music. At a 64kbps bitrate, the sound quality of WMA is similar to that of an FM radio signal, but approximately two minutes of music will fit in 1MB of space.


Depending on the context and kind of technology involved, codec can be defined as a compressed digital audio file format (like MP3, WMA, etc.), a "coding/decoding" chip used to translate between digital and analog transmissions (used in modems), or a compression/decompression algorithm. Codecs compress audio data into a file, often for efficient transmission over a network, and then decode it for playback. While all the codecs perform similar compression of digital audio, there are differences in the technology.


Blends the end of one song into the beginning of the next with a simple cross-fade (no beat matching).


Digital rights management (DRM) is a type of encryption that is intended to protect copyrighted tracks and is added to many commercially purchased music files during the encoding process. DRM encryption frequently restricts the number of times a file can be downloaded, transferred to portable devices, or burned to CD.

Dynamic playlist generation

Powerful playlist selection and organization tools built into the player itself. “Now playing” screen shows the songs you have selected for playback. Add, remove, and rearrange the songs on this list to your liking, then save it directly as a playlist for later use. No need to pre-select songs on your computer before you leave home, like with other players.


Ethernet connectivity allows you to assign an IP address to the player and network it like a computer. Move files onto the player from the network.

Expansion Slot

Many Rio players come with an expansion slot that fits SD™ or MMC™ cards. The memory card works together with the internal memory already on the player. So, for example, a 128MB player with a 256MB card inserted will have a total memory of 384MB. That’s almost 6½ hours of music!


FLAC stands for Free Lossless Audio Codec. In simple terms, FLAC is similar to MP3, but lossless, meaning that audio is compressed in FLAC without any loss in quality.

ID3 Tag Information

Embedded in each MP3 is a small piece of information called an ID3 tag. This stores details about the MP3 like Track Name, Artist, Genre, etc. Often MP3s may have blank or incomplete ID3 tags. Rio players will display ID3 tags when they are available, and use the file name of the MP3 when they are not. All Rio players ship with Rio Music Manager software, which allows you to edit ID3 tag information.


Smooth, relaxed, and without fear.

MMC™ Memory Card

Memory card in the MultiMediaCard™ format. MMC is a form of “non-volatile flash memory” which means you can write information to the card and it will save the information even when you switch off power. It’s an easy way to add memory to your Rio player. MMC and SD formats are generally interchangeable, where SD is slightly faster, but MMC is slightly more affordable.


A standard technology and format for compressing a sound sequence into a very small file (about one-twelfth the size of the original file) while preserving the original level of sound quality when it is played. MP3 is the most poplular Internet-Audio format and is revolutionizing the music distribution industry by allowing users to download music over the Internet.

Ogg Vorbis

Ogg Vorbis is a new audio compression format similar in function to MP3 or WMA. It is different from these formats because it is completely free, open-source, and non-patented.

PlaysForSure (Microsoft)

Rio players that have the PlaysForSure logo support Microsoft's PlaysForSure digital download technology. Match the PlaysForSure logo on a large selection of online music stores to make sure the digital music and video you purchase will play back on it every time. If you see the logo you'll know your digital music will play for sure.

Learn more about Microsofts PlaysForSure

RCA Line-Out

Connect directly for playback through your home stereo or other electronic components with standard (“Red & White”) audio cable.

Rio DJ

Rio DJ is a feature that allows your Rio to automatically select music for playback. It can do things like find your top-10 most-played songs, songs downloaded to the player in a given period, tracks that haven't been played for a given time, etc.

Rio Music Manager

Rio Music Manager is the software that is provided for your PC to connect to your Rio. It also performs a number of other useful functions such as editing ID3 tags, managing playlists, or playing MP3s. If you would like to try Rio Music Manager, it is available for download here.


Use the player like a removable hard drive by transferring files onto it with the RioTaxi application. Move any type of data (documents, movies, etc.) effortlessly from one computer to another.

Sennheiser Earbuds

Don’t be fooled by their tiny size, these incredible earbuds have deep, resonant bass, and crystal clear highs. Loud enough to handle your high-powered Rio without distortion.

SD™ Memory Card

Memory card in the Secure Digital™ format. SD is a form of “non-volatile flash memory” which means you can write information to the card and it will save the information even when you switch off power. It’s an easy way to add memory to your Rio player. MMC and SD formats are generally interchangeable, where SD is slightly faster, but MMC is slightly more affordable.

Solid-State Electronics

All of the player’s storage and playback happens on the circuits of electronic chips. There are no moving parts to skip, break down, or collect dust, as with traditional portable players. This results in great sounding, skip-free products which are also very durable.

USB 1.1

The established connection standard, allowing you to plug into almost any computer.

USB 2.0

The speedy new connection standard, capable of transfer speeds of up to 480Mbps. It is backward compatible with USB 1.1 for use with older computers.


Variable Bitrate (VBR) encoding converts tracks at a variable rate, using higher bitrate encoding for complex portions and lower bitrate encoding for pauses in songs. In theory, VBR can result in better sounding, smaller files.


"Windows Media Audio", Microsoft's proprietary audio codec designed to compete with MP3. It provides competitive sound quality to MP3 but with smaller file sizes.

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