AlphaTheta HDJ-F9 (ETA Early Nov 2026)
AlphaTheta HDJ-F9 (ETA Early Nov 2026)
Move around the booth without giving up responsive DJ monitoring. The AlphaTheta HDJ-F9 uses SonicLink wireless technology with latency as low as 9 ms, plus touch pairing with compatible DJ equipment such as the DJM-V5.
Newly developed 40 mm drivers, a bass-reflex chamber and a PEEK-PU-PEEK composite diaphragm are designed to deliver defined low frequencies and balanced mid-to-high frequencies. An optimised internal structure helps reduce external noise for monitoring in loud DJ booths.
Use SonicLink, Bluetooth or the supplied coiled cable. The HDJ-F9 also features multipoint Bluetooth, a built-in microphone and customisable Status LED settings through the HEADPHONES CONNECT app.
Frequently bought together:
Wireless DJ monitoring with SonicLink
The HDJ-F9 is a professional on-ear DJ headphone featuring AlphaTheta’s SonicLink wireless technology. With latency as low as 9 ms, SonicLink is designed for responsive monitoring while mixing and scratching. Touch the headphones to compatible DJ equipment, such as the DJM-V5, for SonicLink touch pairing. For mixers or devices without SonicLink, the separately sold HP-TX01 transmitter can provide a connection.
Sound designed for the booth
The newly developed 40 mm drivers deliver low frequencies down to the sub-bass range. A bass-reflex chamber helps reproduce the attack of basslines and kicks, while the PEEK-PU-PEEK composite diaphragm suppresses unwanted vibration for balanced mid-to-high frequencies. The optimised internal structure reduces external noise, helping you monitor without needing to push the volume too high.
Flexible fit and durable construction
Swivel-mounted hangers and a flexible silicone headband let you monitor with one or both ears, or rest the headphones on your shoulders. The adjustable slider is made from die-cast aluminium, and the headphones have passed international durability tests.
Bluetooth, app features and wired listening
Multipoint Bluetooth lets you connect to two devices at the same time and switch between them. Google Fast Pair and Windows Swift Pair are also supported. Use the HEADPHONES CONNECT app to adjust the Status LED colour and brightness, rename the headphones, configure auto-power-off and voice assistant settings, and use the Find My Headphones feature to play a sound to help locate them.
For wired monitoring, connect the supplied coiled cable. The package also includes a USB-C charging cable, a 6.3 mm stereo adapter and a carrying pouch.
What’s in the box
- AlphaTheta HDJ-F9 DJ Headphones
- 1.2 m coiled cable (approximately 3.0 m when extended)
- 6.3 mm stereo standard plug adapter (screw-type)
- 0.5 m USB Type-C to USB Type-C charging cable
- Carrying pouch
- Quick Start Guide
- Precautions for Use
- SonicLink wireless technology with latency as low as 9 ms
- SonicLink touch pairing with compatible DJ equipment
- HP-TX01 SonicLink transmitter support; transmitter sold separately
- Newly developed 40 mm drivers
- Bass-reflex chamber for low-frequency response
- PEEK-PU-PEEK composite diaphragm
- Optimised internal structure to reduce external noise
- Swivel-mounted hangers and flexible silicone headband
- Die-cast aluminium adjustable slider
- Multipoint Bluetooth for connection to two devices
- Google Fast Pair and Windows Swift Pair support
- HEADPHONES CONNECT app features, including Status LED customisation and Find My Headphones
- Built-in microphone for hands-free calls
- Supplied coiled cable for wired monitoring
| General | |
| Power: | DC 5 V (when charging); DC 3.7 V (built-in rechargeable lithium polymer battery) |
| Weight: | 285 g (without cable) |
| Charging time: | Approximately 2.5 hours |
| Warranty period: | 2 years |
| Playback time | |
| SonicLink: |
Approximately 9 hours (Status LED off) Approximately 7 hours (Status LED on) |
| Bluetooth: |
Approximately 25 hours (Status LED off) Approximately 13 hours (Status LED on) |
| Bluetooth | |
| Version: | Bluetooth Specification Version 5.3 |
| Maximum transmission distance: | Approximately 10 m in unobstructed circumstances |
| Frequency band: | 2.4 GHz |
| Compatible profiles: | A2DP, AVRCP, HSP, HFP |
| Compatible codecs: | SBC, AAC |
| Pairing: | Google Fast Pair; Windows Swift Pair |
| SonicLink | |
| Maximum transmission distance: | Approximately 15 m in unobstructed circumstances |
| Frequency band: | 2.4 GHz |
| Latency: | As low as 9 ms |
| Headphones | |
| Type: | Closed, dynamic |
| Impedance: | 32 Ohms |
| Sensitivity: | 106 dB |
| Frequency response: | 5 Hz–30,000 Hz |
| Driver units: | 40 mm |
| Plug: | 3.5 mm stereo mini plug |
| NFC | |
| Supported standards: | ISO/IEC 15693 (Tag) |
| Microphone | |
| Type: | Electric condenser |
| Directionality: | Omni-directional |
| Active frequency band: | 100 Hz–4,000 Hz |
| Materials | |
| Head cushion: | Silicone |
| Ear pads: | Polyurethane (leather-style finish) |
| Included accessories | |
| Coiled cable: | 1.2 m; approximately 3.0 m when extended |
| Stereo standard plug adapter: | 6.3 mm, screw-type |
| USB charging cable: | USB Type-C to USB Type-C, 0.5 m |
| Other: |
Carrying pouch Quick Start Guide Precautions for Use |