Introducing the HDJ-F9 professional on-ear wireless DJ headphones

SonicLink™ ultra-low-latency wireless technology brings new freedom to DJ performances

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Feel a higher level of freedom when you perform with the new HDJ-F9 professional on-ear wireless DJ headphones from AlphaTheta, featuring SonicLink™ ultra-low-latency wireless technology.

SonicLink is the answer for artists who demand high-quality sound and reliability from their headphones but also want the freedom to move around and express themselves without the restrictions of cables. Even in wireless mode, the HDJ-F9 headphones produce crystal-clear sound and a dependable connection, while the SonicLink Touch Pairing with compatible DJ equipment offers effortless setup.

The headphones’ minimalist design blends naturally into any setting, combining advanced features with a refined look. Using the dedicated HEADPHONES CONNECT app, you can even customize the color and brightness of the Status LED so it complements the theme of the event or music genre you’re playing. With a combination of ultra-low latency and outstanding comfort that’s hard to find in conventional wireless DJ headphones, the HDJ-F9 model offers an experience unique to its on-ear design.

Evolved SonicLink with touch pairing for a freer DJ performance

The HDJ-F9 headphones feature SonicLink, AlphaTheta’s own wireless technology. SonicLink delivers the high-quality sound, powerful volume, and ultra-low latency that DJs need – all wirelessly. Without cables, you can monitor your mixing, and even scratch, accurately. Latency is as low as 9 ms, so you can stay fully focused on your performance without noticing any delay.

And with the newly added SonicLink Touch Pairing*1, you can instantly connect to compatible DJ gear, such as the DJM-V5, simply by touching the headphones to the mixer or other supported unit. By using the separately sold SonicLink Transmitter HP-TX01*2, you can connect your headphones to a wide range of devices.

*1 To use the SonicLink Touch Pairing, please update the DJM-V5 firmware to the latest version.
*2 Suggested retail price for the SonicLink Transmitter HP-TX01 is €129 including VAT / $129 excluding tax / $159 (Only in the U.S., excluding sales tax) .

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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 40 mm 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-PU-PEEK 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.

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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.

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Customize your experience with the dedicated HEADPHONES CONNECT app

Using the HEADPHONES CONNECT app*3 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, configure the auto-power-off function, and choose whether a button on the headphones can be used to start and stop Siri® or Google Assistant™.

The built-in Find My Headphones feature lets you locate your headphones by playing a sound. The app provides firmware updates and tips, along with support functions to give you extra peace of mind.

*3 The iOS version of the app is scheduled to be released on the App Store at a later date.

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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.

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More features

  • With the Status LED illuminated, the battery offers 7 hours’ playback when connected via SonicLink, and 13 hours’ when using a Bluetooth connection.*4
  • The battery charges from empty to full in approximately 2.5 hours, and a 30-minute charge gives around 2.5 hours of use.*5
  • 1.2 m coiled cable with L-shaped plug included, enabling wired monitoring and extendable up to approximately 3 m.
  • Built-in microphone for hands-free calls.

HDJ-F9 specifications

SonicLink Maximum transmission distance Approx. 15 m in unobstructed locations*6
Playback time Status LED ON   Approx. 7 hours*4
Status LED OFF  Approx. 9 hours*4
Bluetooth Version Bluetooth standard version 5.3
Maximum transmission distance Approx. 10 m in unobstructed locations*6
Compatible Bluetooth profiles A2DP, AVRCP, HSP, HFP
Compatible codecs SBC, AAC
Playback time Status LED ON   Approx. 13 hours*4
Status LED OFF  Approx. 25 hours*4
Charge time Approx. 2.5 hours (headphones)*5
Type Closed, dynamic
Frequency response 5 Hz – 30 kHz
Impedance 32 Ω
Output sound pressure level 106 dB
Driver units ø40 mm dome-type
Weight 285 g/0.6 lb. (without cable)
Warranty period 2 years
Accessories 1.2 m coiled cable (approximately 3.0 m when extended) × 1
ø6.3 mm stereo standard plug adapter (screw-type) × 1
USB charging cable (USB Type-C to USB Type-C) 0.5 m × 1
Carrying pouch × 1
Quick Start Guide × 1
Precautions for Use × 1

*4 Operating time varies depending on factors such as volume level and the audio being input.
*5 The charging time shown is from an empty battery to a full charge and may vary depending on usage conditions.
*6 The communication range may vary depending on the connected device and the surrounding environment.

* Disclaimer: Specifications and price are subject to change.
* SonicLink™ is a trademark or registered trademark of AlphaTheta Corporation.
* The Bluetooth®/MD word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by AlphaTheta Corporation is under license. Other trademarks and trade names are those of their respective owners.
* Google and Google Assistant™ are trademarks or registered trademarks of Google LLC.
* Siri® is a trademark of Apple Inc., registered in the U.S. and other countries and regions.
* Other product, technology, and company names, etc. mentioned herein are trademarks or registered trademarks of their respective owners.