AlphaTheta HDJ-F9 Professional On-Ear Wireless DJ Headphones
The AlphaTheta HDJ-F9 headphones let DJs monitor without cables when paired through SonicLink. With latency as low as 9 ms, your mixes and scratching stay accurately timed. Bluetooth also adds flexibility for everyday listening. Meanwhile, the swivel design, flexible headband and closed build suit both booth work and relaxed listening.
Move Freely Around the Booth
SonicLink connects wirelessly to compatible DJ gear, such as the DJM-V5. For mixers without SonicLink, the HP-TX01 transmitter is available separately. In addition, Touch Pairing makes setup quick with supported equipment. The connection reaches about 15 m when nothing blocks the signal.
Easy Bluetooth Pairing
Bluetooth gives you a simple wireless option away from the booth. Google Fast Pair and Windows Swift Pair also speed up pairing with supported devices. Multipoint pairing connects 2 devices at once, for example a smartphone and a PC. As a result, switching between them takes seconds. A built-in microphone also handles hands-free calls.
Hear Defined Lows in Busy Booths
Each closed, dynamic housing pairs a 40 mm dome-type driver with a bass-reflex chamber on top. Therefore, low frequencies sound powerful and focused. The closed design also blocks outside noise well. Meanwhile, the PEEK-PU-PEEK composite film diaphragm cuts unwanted vibration. So mids and highs stay balanced, with minimal distortion.
Made for One-Ear Monitoring
The swivel mechanism and flexible silicone headband adapt to how you monitor. For instance, you can listen with one ear, use both ear cups, or rest them on your shoulders.
Built for Regular DJ Use
The extendable slider uses tough die-cast aluminum, so it is built to last. At the same time, the minimal design keeps the look understated. When you use a cable, the bayonet lock holds it firmly in place. That way, it won’t disconnect by accident mid-set.
Customise and Track Your Headphones
The HEADPHONES CONNECT app lets you set up the headphones your way. For example, you can change the Status LED colour and brightness, rename them, and set auto-power-off. You can also choose Siri® or Google Assistant™ for button control. Besides, Find My Headphones shows where they are or makes them play a sound. So if they go missing between sets, they are easy to find.
Key Features
- SonicLink wireless monitoring with latency as low as 9 ms
- Touch Pairing for quick setup with compatible DJ gear
- Bluetooth with multipoint, Google Fast Pair and Windows Swift Pair
- 40 mm drivers and a bass-reflex chamber for focused lows
- Swivel mechanism and flexible headband for one-ear monitoring
- Die-cast aluminum slider and bayonet-lock cable connection
- Find My Headphones through the HEADPHONES CONNECT app
- Built-in microphone for hands-free calls








