Any channel over Bluetooth
Every input of your USB interface shows up as a stereo pair. Pick one, press ON AIR and hear it on AirPods or any Bluetooth headphones or speaker.
ON AIR
For DJs · iPhone · iOS 18+
Hear any mixer channel in your AirPods.
Plug your USB mixer into iPhone, pick a channel and listen over Bluetooth. Record every channel to its own file while you play.
No account · No ads · Your audio never leaves your iPhone
Features
A wireless monitor for your mixer. And a multitrack recorder.
Every channel records on its own
Each pair has its own REC button: the master for the whole set, a deck for ten minutes, each to a separate file.
WAV, ALAC or AAC
24-bit WAV for your DAW, lossless ALAC at about half the size, AAC 256 kbps for sharing. 48 kHz, or 96 kHz on interfaces that support it.
Lock Screen & Dynamic Island
ON AIR, the channel and the recording timer stay one tap away. Play and pause switch ON AIR, skip jumps to the next channel.
Real meters
Peak meters with peak hold, clip indicators and a dB scale on every channel, plus a meter of exactly what reaches your headphones.
Knows your mixer
Channels named and the master marked for popular DJ mixers. Long-press any pair to rename it or mark your own master.
How it works
Three steps, no drivers.
-
1
Plug in your mixer
Connect its USB port to iPhone with a USB-C cable, or the Lightning to USB Camera Adapter on older iPhones.
-
2
Pick a channel
A deck, a send or the master mix. Tap it and press ON AIR.
-
3
Listen and record
Hear it in your AirPods. Hit REC on any pair; the files land in the Files app, ready for your DAW.
Screens
See OnAir in action.
Mixers
Works with class-compliant USB audio.
If your mixer or interface works with iPhone without drivers, it works with OnAir. For the models listed here OnAir also knows what each USB channel carries: it names the pairs, marks the master and explains the switches that change what goes over USB.
Layouts follow the manufacturers’ factory defaults. Changed yours in the mixer’s utility? Rename the pairs in the app.
- Allen & Heath XONE:96 Tested
- Allen & Heath Xone:PX5
- Allen & Heath Xone:43C
- Pioneer DJ DJM-900NXS2
- Pioneer DJ DJM-750MK2
- Pioneer DJ DJM-A9
- Pioneer DJ DJM-V10
- Pioneer DJ DJM-S11
- Denon DJ X1850 PRIME
- Any class-compliant interface
FAQ
Questions, answered.
Is there a delay?+
Bluetooth adds its own delay, typically 150–200 ms with AirPods. OnAir is made for listening to and checking a channel, not for beatmatching by ear.
Which mixers and interfaces work?+
Any class-compliant USB audio device, the kind that works with iPhone without drivers. For popular DJ mixers OnAir also knows which USB channel carries what.
How do I connect my mixer?+
On iPhones with USB-C, use a USB-C cable that fits your mixer’s USB port, usually USB-C to USB-B. On iPhones with Lightning, use the Lightning to USB Camera Adapter.
Where are my recordings?+
In the Files app, under On My iPhone › OnAir › Recordings. Each file name carries the session start, the channel and its offset, so the files line up in any DAW.
Does it keep working with the screen locked?+
Yes. Monitoring and recording carry on, and ON AIR with the recording timer stays on the Lock Screen and in the Dynamic Island.
Is my audio uploaded anywhere?+
No. Audio and recordings never leave your iPhone. OnAir sends only anonymous usage statistics and crash reports, see the privacy policy.
What do I need?+
An iPhone with iOS 18 or later, a class-compliant USB mixer or audio interface, and Bluetooth headphones or a speaker.
Still have a question?
Write to acreates@icloud.com. Tell me your mixer model and iPhone, and what you are trying to do.
ON AIR
Phone in pocket.
Phone in pocket.
Hands on the mixer.
OnAir for iPhone. No account, no ads.