AlphaTheta HDJ-F9
(AlphaTheta HDJF9)
Professional Wireless DJ Headphones
The AlphaTheta HDJ F9 professional on-ear DJ headphones combine ultra-low-latency SonicLink wireless monitoring with powerful 40 mm drivers, effective sound isolation, Bluetooth connectivity, and a durable lightweight design. Built for DJs who want accurate cueing without being tied to a headphone cable, the HDJ F9 supports wireless, Bluetooth, and conventional wired monitoring for use in the booth, on stage, or while preparing music.
AlphaTheta HDJ F9 Competitive Differences
- SonicLink ultra-low-latency wireless technology delivers latency as low as 9 ms for accurate DJ monitoring and scratching
- SonicLink touch pairing enables fast connection with compatible DJ equipment without conventional pairing procedures
- Newly developed 40 mm drivers with PEEK-PU-PEEK composite film diaphragms deliver powerful bass and balanced mids and highs
- Bass-reflex chambers reinforce low-frequency attack for clearly defined kick drums and basslines
- Optimized on-ear housing design provides strong sound isolation for monitoring in loud DJ booths
- Bluetooth 5.3 multipoint connectivity supports simultaneous connection with two compatible devices
AlphaTheta HDJ F9 Description
The AlphaTheta HDJ F9 gives DJs the freedom of wireless monitoring without the latency normally associated with conventional Bluetooth headphones. AlphaTheta's SonicLink technology delivers audio with latency as low as 9 ms, making it suitable for precise beatmatching, cueing, and scratching. With compatible DJ equipment, SonicLink touch pairing simplifies setup by allowing the headphones to connect by touching them to the supported unit. The separately available HP TX01 SonicLink transmitter expands wireless compatibility to a wider range of DJ equipment.
Newly developed 40 mm dome-type drivers reproduce frequencies from 5 Hz to 30 kHz, providing extended low-frequency response and clear detail across the audible range. A bass-reflex chamber in each housing helps reproduce the attack of basslines and kick drums, while the PEEK-PU-PEEK composite film diaphragm suppresses unwanted vibration for balanced midrange and high-frequency reproduction with minimal distortion. The optimized housing structure also provides strong passive sound isolation, helping DJs monitor clearly in loud environments without relying on excessive volume.
The lightweight on-ear design is made for flexible professional monitoring. Swivel-mounted hangers support one-ear listening, while the flexible silicone headband remains comfortable when worn normally or rested around the shoulders. A die-cast aluminum adjustable slider adds durability in a high-wear area, and the headphones have passed international durability testing for dependable use in professional DJ environments.
Bluetooth 5.3 adds flexibility away from the decks, including multipoint connectivity for two devices, Google Fast Pair, Windows Swift Pair, SBC and AAC codec support, and a built-in microphone for calls and voice assistants. The dedicated HEADPHONES CONNECT app provides additional customization, including Status LED color and brightness, auto-power-off settings, headphone naming, voice assistant settings, firmware updates, and Find My Headphones functionality. For situations where wireless operation isn't needed, the included coiled cable provides conventional wired monitoring.
HDJ F9 Features
- Professional closed-back on-ear DJ headphones
- SonicLink ultra-low-latency wireless DJ monitoring
- Wireless latency as low as 9 ms with SonicLink
- SonicLink touch pairing with compatible DJ equipment
- Approximately 15 m SonicLink transmission range in unobstructed locations
- Compatible with separately available HP TX01 SonicLink transmitter
- Newly developed 40 mm dome-type drivers
- PEEK-PU-PEEK composite film diaphragm
- Bass-reflex chamber for tight, clearly defined low-frequency reproduction
- Optimized housing structure for effective sound isolation
- 5 Hz to 30 kHz frequency response
- Bluetooth 5.3 wireless connectivity
- Bluetooth multipoint connection for two devices simultaneously
- Google Fast Pair support
- Windows Swift Pair support
- SBC and AAC Bluetooth codec support
- Built-in microphone for hands-free calls
- Voice assistant support
- Customizable Status LED color and brightness through HEADPHONES CONNECT app
- Find My Headphones function through HEADPHONES CONNECT app
- Android Find Hub compatibility
- Swivel-mounted hangers for flexible monitoring styles
- Flexible silicone headband
- Durable die-cast aluminum adjustable slider
- Wired monitoring with included coiled cable
- Approximately 2.5-hour full charge time
- Approximately 2.5 hours of playback from a 30-minute quick charge
HDJ F9 Specifications
- Headphone Type: Closed, Dynamic
- Fit: On-Ear
- Driver Unit: 40 mm Dome-Type
- Frequency Response: 5 Hz - 30 kHz
- Impedance: 32 Ohms
- Output Sound Pressure Level: 106 dB
- SonicLink Latency: As Low As 9 ms
- SonicLink Maximum Transmission Distance: Approx. 15 m / 49.2 ft in unobstructed locations
- SonicLink Playback Time with Status LED On: Approx. 7 Hours
- SonicLink Playback Time with Status LED Off: Approx. 9 Hours
- Bluetooth Version: Bluetooth 5.3
- Bluetooth Maximum Transmission Distance: Approx. 10 m / 32.8 ft in unobstructed locations
- Bluetooth Profiles: A2DP, AVRCP, HSP, HFP
- Bluetooth Codecs: SBC, AAC
- Bluetooth Playback Time with Status LED On: Approx. 13 Hours
- Bluetooth Playback Time with Status LED Off: Approx. 25 Hours
- Multipoint Bluetooth: Up to 2 Devices Simultaneously
- Charge Time: Approx. 2.5 Hours
- Quick Charge: Approx. 2.5 Hours Playback from 30-Minute Charge
- Included Audio Cable: 1.2 m / 3.9 ft Coiled Cable, Approx. 3.0 m / 9.8 ft Extended
- Charging Cable: USB Type-C to USB Type-C, 0.5 m / 1.6 ft
- Weight Without Cable: 10.05 oz (285 g)
- Warranty: 2 Years
- UPC: 841300102687
What's In The Box
- AlphaTheta HDJ F9 professional wireless DJ headphones
- 1.2 m coiled audio 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
