1. Introduction
The Pioneer DJ DDJ-400 is a 2-deck digital DJ controller designed for use with rekordbox dj software. It features a club-style layout, a built-in sound card, and performance pads, making it suitable for both beginners and experienced DJs. This manual provides essential information for setting up, operating, and maintaining your DDJ-400 controller.

Figure 1: Top view of the Pioneer DJ DDJ-400 Digital DJ Controller.
2. What's in the Box
- Compact REKORDBOX DJ CONTROLLER - 2 Channel
3. Setup
To begin using your DDJ-400 controller, follow these steps:
- Software Installation: Install the rekordbox dj software on your computer. The DDJ-400 includes a rekordbox DJ license key. Ensure your operating system meets the software requirements (macOS Mojave 10.14 or later, Windows 10/8.1/7 with latest service pack).
- Connect to Computer: Connect the DDJ-400 to your computer using the provided USB cable. The controller features a built-in sound card for plug-and-play connectivity.
- Audio Output: Connect your speakers or headphones to the master output (RCA) or headphone jack on the controller.
- Power: The controller is powered via the USB connection from your computer.

Figure 2: DDJ-400 connected to a laptop for setup.
4. Operating Instructions
The DDJ-400's layout mirrors that of professional Pioneer DJ equipment, making it intuitive to use.
4.1 Key Features and Controls
- Club Style Layout: Familiarize yourself with the dedicated play/pause and cue buttons, Beat FX, and CDJ-style looping controls, similar to the CDJ-2000NXS2 and DJM-900NXS2.
- Performance Pads: Utilize the 16 performance pads for hot cues, beat loops, beat jump, and sampler functions.
- Beat FX: Apply various effects to your tracks using the Beat FX section.
- rekordbox Tutorial Feature: Use the tutorial feature in rekordbox (version 5.3 or later) to learn basic equipment operation step-by-step.

Figure 3: Front view of the DDJ-400, showing jog wheels, mixer, and performance pads.
4.2 Mixing Techniques
The DDJ-400 supports various mixing techniques. Here are some tutorials:
Video 1: DDJ 400 Tutorial Drop Mixing. This video demonstrates how to perform a drop mix, transitioning instantly between tracks.
Video 2: DDJ 400 Tutorial Drop Swapping. Learn the technique of drop swapping, playing a build-up from one track and swapping to another before the drop.
Video 3: DDJ-400 Tutorial Mixing With FX. This tutorial guides you through using effects to enhance your mixes.
Video 4: DDJ 400 Tutorial Long Loop Mix with Loop. Learn how to create and manage long loops within your mixes.
5. Specifications
| Feature | Specification |
|---|---|
| Item Weight | 0.18 ounces |
| Product Dimensions | 10.72 x 18.98 x 2.3 inches |
| Item model number | DDJ-400 |
| Frequency Range | 20 - 20000 Hz |
| Number of Channels | 2 |
| Connectivity Technology | USB |
| Power Source | Corded Electric (via USB) |
6. Troubleshooting
If you encounter issues with your DDJ-400, consider the following:
- No Sound: Ensure all audio cables are securely connected to your speakers/headphones and the controller. Check your computer's audio output settings and the volume levels on the DDJ-400 and in rekordbox.
- Controller Not Recognized: Verify the USB cable is properly connected. Try a different USB port or cable. Ensure rekordbox dj software is updated to the latest version and that your computer's operating system is compatible.
- Software Lag/Performance Issues: Close unnecessary applications on your computer. Ensure your computer meets the minimum system requirements for rekordbox dj.
- Driver Issues: For Windows users, ensure the correct audio drivers for the DDJ-400 are installed. macOS typically handles drivers automatically.
7. Maintenance
To ensure the longevity and optimal performance of your DDJ-400:
- Cleaning: Regularly wipe the surface of the controller with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Storage: Store the controller in a clean, dry place away from direct sunlight, extreme temperatures, and excessive dust.
- Handling: Avoid dropping the unit or subjecting it to strong impacts. Do not place heavy objects on top of the controller.
- Liquid Contact: Keep liquids away from the controller to prevent damage to internal components.
8. Warranty and Support
For detailed warranty information, product registration, and technical support, please visit the official Pioneer DJ website. You can find comprehensive FAQs, driver downloads, and contact information for customer service.
Official Pioneer DJ Website: www.pioneerdj.com





