Set up your sound
Numark Mixtrack Platinum FX
Check my kit
Check your computer, DJ software and gear work with DJ back 2 back before you sign up. It takes a minute, and nothing you pick is kept.
Plug your headphones into your mixer or controller, not your computer.
| From | To | Cable | |
|---|---|---|---|
| ControllerUSB | ComputerUSB | USB cable | |
| ControllerMaster out | Powered speakers or amp | ||
| ControllerPhones | Headphones |
If your controller has no master out, use an audio interface for your speakers.
Your gear
USB controller
- Plug in your controller and open your DJ software.
- On a Mac: In your DJ software's audio settings, set the output to your controller itself, not a combined (aggregate) device.
- On Windows: Never put headphones on a second device or adapter.
- If your controller gives your computer only one stereo pair, you can't hear your partner on their own in your headphones: use an audio interface or a controller with four outputs, or try it and let us know how you get on.
- Keep one deck empty, for example deck 1. In MIDI Learn, map its fader: that fader is your partner's.
- Map your partner's fader, EQ and filter to a channel you're not playing on: your DJ software hears these knobs too.
Your controller
Numark Mixtrack Platinum FX
Should work
- In your DJ software, set main to the Mixtrack Platinum FX's outputs 1–2 and headphones to its outputs 3–4.
Your software
rekordbox
- Under Source, pick rekordbox, listed under DJ software.
In a set, the app shows these buttons and messages: READY · Set starts in · Handover · Accept handover · Confirm partner is mixed out · Fader up.
- When offered a handover, make sure your partner's fader is up, then click Accept and mix in your track.
- You have control. Once you're in, confirm your partner is mixed out.
- When you're ready, you hand over, your partner accepts and tells you when you're mixed out, and you can stop your track.
Tested on Windows
Only gear that passed our Windows test:
- Behringer UMC204HD: main and headphones on OUT 1-4.
- MOTU M4: headphones on MOTU M Series (ASIO).
- Pioneer DJM-V10: your partner on the channel set to USB 1/2.
VirtualDJ on Windows
No 4-channel output, such as the MOTU M4:
- Click the gear (top right).
- Click AUDIO.
- Under OUTPUTS, click SPEAKER + HEADPHONE.
- Under master, pick your interface's Out 1-2 (WASAPI).

- Click APPLY.
- Pick chan 1 & 2.
- Click APPLY.
- Under headphones, pick your interface's ASIO entry.
- Pick Out 3 & 4.
- Click APPLY.

4-channel output, such as OUT 1-4? Set master and headphones both to it: chan 1 & 2, then chan 3 & 4.
rekordbox on Windows
- Open Preferences.
- Click Audio.
- On Configuration, open the Audio list.
- Under Windows Audio, pick your interface's Out 1-2, not an ASIO entry: our app hears nothing from ASIO.

- Check that Audio shows Out 1-2.

Serato DJ Pro on Windows
Without Serato hardware, Serato DJ Pro plays to Windows' own output:
- Open Windows Settings, then System, then Sound.
- Under Output, pick your interface's Out 1-2.

- In Serato DJ Pro, turn the master down until our "Your sound level" bar sits level with its mark, not past it. Serato starts at −0.1 dBFS, which pins the bar.
Your internet
Use a wired connection wherever possible.
Upload speed: 5 Mbps or more, or quality may drop.
How a set sounds depends on both DJs' internet connections, which we don't control. We can't promise a connection will be good enough.
Any issues? Email support@djb2b.com