Tuesday, November 10, 2026

AlphaTheta HDJ-F9 Professional Wireless DJ Monitoring Headphones















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.

Rich Low Frequencies and Highly Effective Sound Isolation
While they're compact in size, the HDJ-F9 headphones are designed for precise monitoring, even in loud DJ booths. The newly developed 40mm drivers deliver powerful, full-bodied low frequencies all the way down to the sub-bass range. The bass-reflex chamber at the top of each housing accurately reproduces the attack of basslines and kicks, delivering tight, clearly defined lows. And the PEEK-PUPEEK composite film diaphragm suppresses unwanted vibration, providing a well-balanced mid and high range with minimal distortion. With an optimized internal structure, the headphones achieve a high level of sound isolation compared to other on-ear models. So, you can monitor your music comfortably without turning the volume up too high, reducing strain on your ears.
Durability and Minimal Design to Support Every Monitoring Style
  • 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.
Customize your Experience with the Dedicated HEADPHONES CONNECT App
  • 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.
Multipoint Bluetooth for Seamless Connection Across Multiple Devices
With multipoint Bluetooth pairing, you can connect your headphones with 2 devices at the same time—for example, a smartphone and a PC—so you can switch between them effortlessly. There’s also compatibility with Google Fast Pair and Windows Swift Pair, enabling quick one-touch pairing with Android or Windows devices.
Additional Detials
  • 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.
Items Included
  • AlphaTheta HDJ-F9 Professional Wireless DJ Headphones
  • 3.9' Coiled Audio Cable
  • 1/4" Adapter (Screw Type)
  • USB-C Charging Cable
  • Carrying Pouch

New Nov 2026 - AlphaTheta DJM-A7 4-channel Pro DJ Club mixer

New Nov 2026 - AlphaTheta DJM-A7
A next generation 4-channel Pro DJ Club mixer (coming in store Dec 2026)


























The brand-new AlphaTheta DJM-A7 brings a club-style mixer layout similar to the DJM-A9, but in a more compact footprint.⁠
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And there are some interesting new features DJs will want to know about.⁠
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Here's what's new:⁠
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• Master Texture: A new feature that lets you shape the overall master sound without needing support from a sound engineer.⁠
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• Split Filter: A new Sound Colour FX option that allows you to filter a track while keeping the kick and bass frequencies going, so you don't lose that low-end energy on the dancefloor.⁠
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• 6 Beat FX: Giving DJs a selection of effects to experiment with during their transitions.⁠
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• Dual USB-C Connections: Two USB-C ports for connecting laptops, making it easier to work across different DJ setups.⁠
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• Digital Multi I/O: Additional connectivity for external equipment, although there's no analogue Send/Return this time.⁠
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• SonicLink: Wireless headphone pairing for compatible headphones.⁠
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With a familiar club-style layout, new DJ effects and updated connectivity, the DJM-A7 looks like an interesting option for DJs upgrading from the DJM-750MK2 or building a more professional home DJ setup.⁠
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General
Channels
4
Maximum dimensions (W × D × H)
331.0 × 387.8 × 107.9 mm
13.0″ × 15.3″ × 4.2″
Weight
6.7 kg
14.8 lbs.
Sampling rate
48 kHz
A/D converter
32bit (ESS Technology)
D/A converter
32bit (ESS Technology)
Frequency response
20 Hz – 20 kHz (LINE)
S/N ratio
110 dB (USB)/102 dB (LINE)/86 dB (PHONO)/79 dB (MIC)
Total harmonic distortion
0.007% (LINE-MASTER1)
Input
LINE
LINE x 4 (RCA)
PHONO
PHONO x 4 (RCA)
MIC
MIC x 1 (XLR & 1/4″ TRS jack)
Output
MASTER
MASTER 1 x 1 (XLR)
BOOTH
BOOTH x 1 (1/4″ TRS jack)
REC OUT
REC OUT (MASTER 2) x 1 (RCA)
PHONES
PHONES x 2 (1/4″ stereo jack x 1, 3.5 mm stereo mini jack x 1)
Others
USB
USB Type-C x 2 (PC/Mac), USB Type-C x 1 (MULTI I/O)
LINK
LINK x 1 (LAN 100BASE-TX)
Effects
Sound Color FX
4 types: Space, Dub Echo, Split Filter, Filter
Beat FX
6 types: Delay, Spiral, Trans, Echo, Reverb, Roll
Compatible DJ software
Compatible DJ software
rekordbox for Mac/Windows (Hardware Unlock – no license needed)
djay Pro for Mac and Windows (subscription needed)
djay for iOS (subscription needed)
Serato DJ Pro (subscription needed)
Wireless connectivity
SonicLink
Frequency band used: 2.4 GHz
Touch Pairing: Supported
SonicLink-compatible headphones: HDJ-F10, HDJ-F9
Accessories
Accessories
Power cord, Quick Start Guide, Precautions for Use, Warranty (for some regions)