1. Introduction
The AlphaTheta DDJ-FLX2 is a compact 2-channel DJ controller designed for ease of use and portability. It offers intuitive controls and broad compatibility with various DJ applications and streaming services, making it suitable for both beginners and experienced DJs on the go.

Figure 1: Top view of the DDJ-FLX2 DJ Controller.
2. What's in the Box
Upon opening the package, please ensure all the following items are included:
- DDJ-FLX2 DJ Controller
- USB cable (C to C)
- Quick Start Guide (this manual)
- Safety Precautions
3. Setup Guide
Follow these steps to set up your DDJ-FLX2 controller for optimal performance.
3.1. Connecting to a Smartphone or Tablet
The DDJ-FLX2 can be easily connected to your smartphone or tablet for mobile DJing.
- Connect your smartphone or tablet to the DDJ-FLX2 using the provided USB-C to USB-C cable.
- Ensure your device has a compatible DJ application installed (e.g., djay).
- Connect external speakers to the DDJ-FLX2's audio output if desired.
- For extended use, connect a power supply to the controller.

Figure 2: Connection diagram for smartphone and speaker.

Figure 3: Wireless connection via Bluetooth with external power supply.
3.2. Connecting to a Laptop
For a more comprehensive DJ experience, connect your DDJ-FLX2 to a laptop.
- Connect your laptop to the DDJ-FLX2 using the provided USB-C to USB-C cable.
- Install and launch a compatible DJ software (e.g., rekordbox, Serato DJ Lite).
- Connect external speakers to the DDJ-FLX2's audio output for sound playback.
- Connect headphones to the dedicated headphone jack for monitoring.

Figure 4: Connection diagram for laptop setup.

Figure 5: Setup with laptop and external speaker.

Figure 6: Portable setup with smartphone and speaker.

Figure 7: DDJ-FLX2 with connected headphones for audio monitoring.
4. Operating Instructions
This section details the primary functions and controls of the DDJ-FLX2.
4.1. Key Controls Overview

Figure 8: Front view highlighting key controls.
- Jog Wheels: Used for scratching, cueing, and pitch bending.
- Faders: Control volume levels for each channel and the crossfader for mixing between channels.
- Performance Pads: Trigger hot cues, pad FX, loops, and samples.
- EQ Knobs: Adjust high, mid, and low frequencies for each channel.
- CFX Knobs: Apply color effects to tracks.

Figure 9: Detailed view of the mixer section.

Figure 10: User operating the controller with a connected smartphone.
4.2. Smart CFX
The Smart CFX feature allows you to add dynamic effects with a single twist of a knob, enhancing your mixes effortlessly.

Figure 11: Side view of the controller, showing its compact design.

Figure 12: Close-up of the Smart Fader and CFX controls.
4.3. Smart Fader
The Smart Fader function enables seamless transitions between tracks, even across different genres, by automatically adjusting volume, bass, and BPM.
4.4. Software and Streaming Compatibility
The DDJ-FLX2 is compatible with a range of DJ applications and streaming services, offering flexibility in your music selection and performance.
- DJ Applications: rekordbox, djay, Serato DJ Lite.
- Streaming Services: Apple Music, Beatport Streaming, Beatsource Streaming, SoundCloud Go+/DJ, TIDAL.

Figure 13: User actively DJing with the DDJ-FLX2 and a laptop.

Figure 14: Another perspective of a user engaging with the DDJ-FLX2 and laptop.
5. Specifications
| Feature | Detail |
|---|---|
| Model Number | DDJ-FLX2 |
| Brand | AlphaTheta |
| Number of Channels | 2 |
| Mounting Type | Tabletop |
| Power Source | Corded Electric |
| Connector Type | USB |
| Item Weight | 2.65 Pounds (1.2 kg) |
| Product Dimensions (L x W x H) | 8.19 x 15.09 x 1.9 inches (20.8 x 38.3 x 4.8 cm) |
| Audio Input | Laptop, Phone, Speaker |
| Connectivity Technology | Bluetooth |
| Color | Black |
| Compatible Devices | DJ Software, Streaming Services, DJ Mixers, Turntables |
| UPC | 841300102519 |
| Country of Origin | Malaysia |
| Date First Available | October 29, 2024 |
6. Maintenance
To ensure the longevity and optimal performance of your DDJ-FLX2, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe down the surface of the controller. Avoid abrasive cleaners or solvents.
- Storage: Store the controller in a cool, dry place away from direct sunlight and extreme temperatures.
- Protection: When transporting, use a protective case to prevent damage to the jog wheels and faders.
- Connectivity: Always handle cables carefully and avoid pulling them forcefully from the ports.
7. Troubleshooting
This section addresses common issues you might encounter with your DDJ-FLX2 and provides potential solutions.
| Problem | Possible Cause / Solution |
|---|---|
| No Sound Output |
|
| Controller Not Recognized by Software |
|
| Lag or Latency in Audio |
|
8. Warranty and Support
The AlphaTheta DDJ-FLX2 comes with a standard manufacturer's warranty. For detailed warranty information, please refer to the warranty card included in your product packaging or visit the official AlphaTheta website.
For technical support, product inquiries, or service requests, please contact AlphaTheta customer support through their official channels. Keep your purchase receipt and product serial number handy when contacting support.
You can also find additional resources and FAQs on the AlphaTheta Store on Amazon.





