About USB devices

Music files (MP3/AAC/WAV/AIFF) recorded on USB devices can be played. Such data as disc identification information, cue points, loop points and hot cues can be recorded on USB devices.

Folder layers

Max. 8 levels (files in folders beyond the 8th level cannot be played)

 

 

Max. number of

Unlimited (folders beyond the 10 000th folder within a single folder

folders

cannot be displayed)

 

 

Max. number of

Unlimited (files beyond the 10 000th file within a single folder cannot

files

be displayed)

 

 

Supported file

FAT, FAT32 and HFS+

systems

 

!The CDJ-900 supports such USB mass storage class USB devices as external hard discs, portable flash memory drives and digital audio players. External DVD/CD drives and other optical disc devices cannot be used.

!When there are many folders or files, some time may be required for loading.

!If multiple partitions are set for the USB device, the device may not be recognized.

Cautions on using USB devices

!Some USB devices may not operate properly. Please note that Pioneer will accept no responsibility whatsoever for loss of data recorded on USB devices.

!USB hubs cannot be used.

!USB devices equipped with flash card readers may not operate.

!If a current above the allowable level is detected in the CDJ-900’s USB port, it could happen that a warning message is displayed, the power to the USB device is cut off and signal transfer is stopped. To restore normal operation, remove USB devices connected to the player, then press USB STOP. Avoid reusing the USB device for which the excess current was detected. If normal operation is not restored after performing the above operation (if signals are not transferred), try turning off the player’s power then turning it back on.

!Depending on the USB device you are using, the desired performance may not be achieved.

About AAC files

!AAC is the abbreviation of “Advanced Audio Coding”, a basic format of audio compression technology used for MPEG-2 and MPEG-4.

!The file format and extension of AAC data depends on the application used to create the data.

!In addition to AAC files encoded with iTunes® and with the extension “.m4a”, files with the extensions “.aac” and “.mp4” can also be played on the CDJ- 900. However, copyright protected AAC files purchased for example at the iTunes Music Store cannot be played. Also, some files may not be playable, depending on the iTunes version used to encode them.

!The CDJ-900 supports AAC files in the formats shown below.

Compatible

 

Sampling frequencies of 16 kHz, 22.05 kHz, 24 kHz,

MPEG-4 AAC LC

32 kHz, 44.1 kHz and 48 kHz, and bit rates of 16

formats

 

kpbs – 320 kbps are supported.

 

 

 

 

ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 are sup-

 

aac

ported.

 

Titles, album names, artist names, etc., are dis-

 

 

Track information

 

played here.

 

Extensions other

Meta tags (embedded tags) are supported.

 

Titles, album names, artist names, etc., are dis-

 

than aac

 

played here.

 

 

 

 

 

File extension

.m4a, .aac and .mp4

 

About WAV files

The CDJ-900 supports WAV files in the formats shown below.

Compatible

The 16-/24-bit non-compressed PCM format and sampling frequencies

formats

of 44.1 kHz and 48 kHz are supported.

 

 

Track information

LST chunk

Titles, album names, artist names, etc., are displayed here.

 

 

 

File extension

.wav

 

 

English

About MP3 files

MP3 files can have a constant bit rate (CBR) or a variable bit rate (VBR). Both types of files can be played on the CDJ-900, but the search and super fast search functions are slower with VBR files. If your priority is operability, we recommend recording MP3 files in CBR.

The CDJ-900 supports MP3 files in the formats shown below.

 

 

Audio Layer-3 sampling frequencies of 32 kHz, 44.1

 

MPEG-1

kHz and 48 kHz, and bit rates of 32 kbps – 320 kbps

Compatible

 

are supported.

formats

Audio Layer-3 sampling frequencies of 16 kHz,

 

MPEG-2

22.05 kHz and 24 kHz, and bit rates of 16 kbps – 160

 

 

kbps are supported.

 

 

 

 

 

ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 are sup-

Track information

ported.

Titles, album names, artist names, etc., are dis-

 

 

 

 

played here.

 

 

File extension

.mp3

About AIFF files

The CDJ-900 supports AIFF files in the formats shown below.

Compatible

The 16-/24-bit non-compressed PCM format and sampling frequencies

of 44.1 kHz and 48 kHz are supported.

formats

Titles, album names, artist names, etc., are displayed here.

 

 

 

File extension

.aif, .aiff

 

 

About rekordbox

!rekordbox is an application for managing music files which are used for DJ play with a Pioneer DJ Player (i.e. CDJ-2000, CDJ-900).

Data that has been detected and measured, as well as any points which have been set and stored using rekordbox, can be used in combination with a Pioneer DJ Player (i.e. CDJ-2000, CDJ-900) to achieve outstanding DJ performance.

!Install rekordbox from the included CD-ROM onto a computer. For instruc- tions on using rekordbox, see Using in combination with rekordbox on page 11 and About the rekordbox software on page 21.

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Pioneer Multi Player, CDJ-900 About USB devices, About AAC files, About WAV files, About MP3 files, About Aiff files
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Multi Player, CDJ-900 specifications

The Pioneer CDJ-900 is a versatile DJ multi-player designed to elevate the performance of both the amateur and professional DJ. Renowned for its innovative technology and user-friendly interface, the CDJ-900 quickly became a staple in clubs and festivals worldwide, making it an essential tool for those serious about their craft.

One of the standout features of the CDJ-900 is its ability to play a wide range of audio formats. Supporting WAV, AIFF, MP3, and AAC files, this multi-player ensures that DJs have the flexibility to work with their preferred sound quality. The CDJ-900 also boasts a high-resolution, 7-inch color LCD screen, providing a clear and navigable interface that enhances visual performance. This display allows DJs to access essential information such as waveforms, BPM, and track info at a glance.

The CDJ-900 incorporates a USB port that allows for direct mixing from USB devices, eliminating the need for CDs or laptops, which streamlines performances and liberates DJs from cumbersome setups. This USB connectivity also enables the use of multiple USB devices, so DJs can easily switch between different playlists on the fly.

Built with an advanced digital signal processor (DSP), the CDJ-900 features superior sound quality that caters to the demands of live performances. With its advanced quantized loop function, DJs can create seamless loops in real time, providing creative opportunities during performances. In addition to this, the multi-player includes a slip mode that allows for non-destructive scratching, enabling the DJ to compose intricate soundscapes without losing the original track.

Additionally, the CDJ-900 includes features like beat sync, which can automatically adjust the tempo of tracks for perfect alignment. This feature is particularly useful during live sets, ensuring that transitions are smooth and harmonically compatible.

The build quality of the CDJ-900 is another aspect that is highly regarded. Constructed with durable materials, this unit stands up to the rigors of extensive travel and repeated use, which is essential for professional settings. The ergonomically designed interface and well-placed controls also ensure that DJs can perform with speed and precision.

In summary, the Pioneer CDJ-900 is a powerful multi-player packed with features that cater to the needs of today’s DJs. Its versatility, sound quality, and intuitive design make it an excellent choice for anyone looking to elevate their DJing experience. Whether performing live or practicing in the studio, the CDJ-900 remains a top-ranking choice for musicians around the globe.
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