Key Features
Digital media playback
The CDJ-400 handles CD Audio and MP3 files from CD, while USB connectivity lets DJs draw upon sound libraries on external storage devices [5]. Through the new push-selection Rotary Scroll Wheel and Back Button, users can navigate files and folders as simply and quickly as on many of the leading portable media players available today.

MIDI control via USB
With Pioneer’s finger firmly on the pulse of digital DJ developments, it is only natural that the CDJ-400 can control DJ and music application software. This is achieved by simply selecting the PC Source Select button, so that virtually all of the deck’s buttons and slider can send MIDI control data via the PC USB connection. So when MIDI is the message, the CDJ-400 definitely delivers. For example, a DJ can connect the CDJ-400 to a PC or MAC and play and manipulate files from their favourite DJ application software – such as Pioneer DJS or Serato Scratch LIVE [4] – and this doesn’t even require a time-code disc to be used in the deck.

New illuminated Jog Wheel
With a design inspired by the club standard CDJ-1000 Jog Wheel comes the CDJ-400’s 115mm illuminated platter. You can choose from six different patterns of Jog Wheel illumination and even personalise your own CDJ ‘slip mats’ or jog sheets [6].

New Scratch Jog Effects
In addition to the Digital Jog Break Effects (JET, WAH and ROLL) found in CDJ Mode, Pioneer serves up the world’s first Scratch Jog Effects, BUBBLE, TRANS and WAH, in vinyl mode. BUBBLE simulates a scratch technique and is great for spin backs, while TRANS is like rhythmically transforming with a mixer’s cross fader and WAH resembles the guitar Wah pedal.

New Beat Loop Divide
Can you dance to this b-b-beat? Making the magic of live mash-up even more manageable, the funky new Beat Loop Divide facility rhythmically dices loops to fashion beats with drama, intrigue or whatever your desired effect. It is easily adjustable using its (- and +) buttons during loop playback, thereby creating loops with mind-melting, dancefloor-destroying twists.

Hot Loop and Beat Loop
Besides the Beat Loop Divide, the CDJ-400 lets DJs create flawless four-beat Beat Loops and Hot Loops. For the latter hit the Hot Loop (In/Out point) buttons during a loop to retrigger the loop. Up to 10 Cue/Loop points per disc, for up to 920 discs, can be stored in memory and transferred by USB key between CDJ-400s.

Other key features
1. Tempo range settings available: ±6%, ±10%, ±16% and WIDE [7]
2. Resume function – restarts playback of a disc from the point at which it was most recently ejected
3. Digital Output – connect to Pioneer’s range of digital DJM mixers or other studio equipment
4. Text Mode – displays CD-TEXT and ID3 tag information
5. Reverse play – instant reverse play
6. Shock-Proof Memory and Pioneer Oil Damper Float construction
7. High-quality 7x5 dot matrix display

Specifications

Model Name: CDJ-400
Disc Type: AUDIO CD, CD-R / RW & MP3 CD-ROM (MP3 files)
Compatible Media: USB memory (FAT32 format, MP3 file)
Frequency Response: 4 Hz-20 kHz
Signal-to-Noise Ratio: 115 dB or more (JEITA)
Total Harmonic Distortion: 0.006 % (JEITA)
Output Terminals: AUDIO OUT (RCA), DIGITAL OUT (COAXIAL)
Other Terminals: CONTROL (?3.5 mm mini plug)
Audio Output Voltage: 2.0 V
Power Requirements: AC 220-240V (50 Hz/60 Hz)
Power Consumption: 19 W
Dimensions (without package): 217.9 mm (W) ׳ 296.3 mm (D) ׳ 107.5 mm (H)
Weight: 2.7 kg

*1. The CDJ-400 supports mass storage USB memory, but may not support playback of all USB devices or provide sufficient electrical power for them. It cannot play copyright-protected files (DRM).
*2. As of 7th November 2007, according to Pioneer.
*3. Using DJS version 1.5 (update scheduled for January 2008 ) or later versions, the CDJ-400 can control DJS. For further details, /(website launch scheduled for early December 2007).
*4. Support for the CDJ-400 will be included in Scratch LIVE early in 2008. Scratch LIVE is a registered trademark of Serato Audio Research. More DJ software applications are pending from other companies. However, Pioneer cannot guarantee the performance of third party software on users’ computers.
*5. HFS (MAC OS X) & NTFS (Windows) hard drives are currently not supported. Files must be MP3 format CBR & VBR.
*6. Three jog sheets are supplied with the CDJ-400.
*7. WIDE mode is not available on MP3 files