Free yourself from the wires that tie you down with the AlphaTheta HDJ-F9, the latest pair of high-performance DJ headphones equipped with SonicLink technology, which allows you to DJ and perform wireless with ultralow latency. The headphones utilize newly developed 40mm dynamic drivers to produce high-resolution, powerful sound with a wide frequency range.
The enhanced earpad and housing structure insulate the sound from the outside world, allowing you to hear the music in extremely noisy environments. The HDJ-F9 also feature Bluetooth for casual listening, preparing for DJ sets, and producing music. An coiled audio cable, a USB-C charging cable, and a carrying pouch area also included.
- Whichever monitoring style you prefer, the HDJ-F9 headphones adapt to you. The swivel-mounted hangers and flexible silicone headband are comfortable to wear, whether you’re listening with one ear or resting the headphones on your shoulder.
- To ensure long-term durability, the adjustable slider is made from tough die-cast aluminum. The headphones have passed international durability tests, offering the reliability that professional DJs need.
- Using the HEADPHONES CONNECT app on your smartphone, you can adjust the color and brightness of the Status LED to match your mood or musical style. You can also rename the headphones and configure the auto-power-off function and voice assistant settings for Siri or Google Assistant.
- The built-in Find My Headphones feature lets you locate your headphones by playing a sound, and on Android devices, it’s also compatible with Find Hub. The app provides firmware updates and tips, along with support functions to give you extra peace of mind.
- With the Status LED illuminated, the battery offers 7 hours playback when connected via SonicLink, and 13 hours when using a Bluetooth connection.
- The battery charges from empty to full in approximately 2.5 hours, and a 30-minute charge gives around 2.5 hours of use.
- 3.9' coiled cable with L-shaped plug included, enabling wired monitoring and extendable up to approximately 9.8'.
- Built-in microphone for hands-free calls.
- AlphaTheta HDJ-F9 Professional Wireless DJ Headphones
- 3.9' Coiled Audio Cable
- 1/4" Adapter (Screw Type)
- USB-C Charging Cable
- Carrying Pouch


















