AlphaTheta HDJ-F9 | Wireless DJ Headphones with 9m...
$349.00
The AlphaTheta HDJ-F9 professional wireless DJ headphones combine SonicLink ultralow-latency technology, Bluetooth 5.3 connectivity, and newly developed 40mm dynamic drivers for accurate monitoring and everyday music listening. With wireless latency as low as 9ms through SonicLink, these closed-back on-ear headphones allow DJs to beatmatch, mix, and scratch without a traditional headphone cable. Their bass-reflex chambers, sound-isolating construction, flexible headband, and durable aluminum components provide detailed audio reproduction and comfortable operation in demanding DJ environments.
The AlphaTheta HDJ-F9 brings wireless freedom to professional DJ monitoring without sacrificing the responsiveness needed for live mixing. Equipped with AlphaTheta's SonicLink wireless technology, the headphones achieve latency as low as 9 milliseconds, allowing DJs to monitor tracks and perform precise beatmatching without the delay commonly associated with conventional Bluetooth audio. SonicLink Touch Pairing enables convenient connection with compatible DJ equipment, while the separately available HP-TX01 transmitter extends SonicLink functionality to audio equipment without integrated support.
Audio performance is driven by newly developed 40mm dynamic drivers with PEEK-PU-PEEK composite film diaphragms. This design reduces unwanted diaphragm vibration while maintaining detailed midrange and high-frequency reproduction. Built-in bass-reflex chambers enhance low-frequency response, helping DJs clearly identify kick drum transients and basslines during performances. With a frequency response of 5 Hz to 30 kHz, 32-ohm impedance, and 106dB sensitivity, the headphones provide powerful, detailed sound for monitoring, music preparation, and everyday listening.
Designed for demanding DJ environments, the HDJ-F9 features optimized closed-back housings and earpads that provide effective passive sound isolation. The on-ear design helps reduce interference from surrounding sound systems, allowing more comfortable monitoring in noisy venues. Swivel-mounted hangers support flexible listening positions, while the silicone headband and durable die-cast aluminum sliders provide comfortable handling and dependable construction. A secure bayonet-style locking connection helps prevent accidental disconnection when using the included coiled audio cable.
For everyday wireless listening, Bluetooth 5.3 connectivity supports AAC and SBC audio codecs, multipoint pairing with two devices, Google Fast Pair, and Windows Swift Pair. The built-in microphone enables hands-free calls, while the dedicated HEADPHONES CONNECT app allows users to customize the Status LED, manage automatic power-off settings, configure voice assistant controls, and access headphone-finding functions. The app also provides firmware updates and additional device settings.
The rechargeable battery provides approximately 7 hours of SonicLink operation or 13 hours of Bluetooth playback with the Status LED illuminated. Turning the LED off extends the specified operating time to approximately 9 hours with SonicLink or 25 hours with Bluetooth. A full charge takes approximately 2.5 hours, while a 30-minute quick charge provides about 2.5 hours of SonicLink playback. The included 1.2-meter coiled audio cable extends to approximately 3 meters for wired monitoring, making the HDJ-F9 suitable for professional DJ booths, mobile performances, studio sessions, and personal listening.
| App Control | HEADPHONES CONNECT app for LED color/brightness, settings, firmware updates, headphone finder |
| Control Interfaces | HEADPHONES CONNECT app for LED customization, device settings, firmware updates; physical buttons on headphones |
| Physical Controls | Buttons on headphones for power, pairing, and playback control |
| Remote Control | No explicit remote control mentioned |
| Wireless Capabilities | SonicLink ultralow-latency wireless technology, Bluetooth 5.3 with multipoint connectivity |
| Audio Latency | As low as 9ms ms |
| Driver Configuration | 40mm dynamic drivers with PEEK-PU-PEEK composite diaphragms mm |
| Battery Life | Up to 9 hours SonicLink playback (LED off), Up to 25 hours Bluetooth playback (LED off) hours |
| Connectivity Protocols | SonicLink 2.4 GHz, Bluetooth 5.3 (SBC, AAC codecs), Google Fast Pair, Windows Swift Pair |
| Frequency Response | 5 Hz - 30 kHz Hz |
| Impedance | 32 Ohms Ohms |
| Power Consumption | Approximately 2.5 hours full charge hours |
| Brand | AlphaTheta |
| Name | AlphaTheta HDJ-F9 Wireless DJ Headphones |
| Primary Category | Wireless DJ Headphones |
| Build Material | Die-cast aluminum adjustable sliders, silicone headband, polyurethane leather-style earpads |
| Included Accessories | 1.2 m coiled audio cable (extends to 3 m), 1/4 in stereo screw-type adapter, USB-C charging cable, carrying pouch, quick start guide |
| Mounting Options | Swivel-mounted hangers for single-ear and over-the-shoulder monitoring |
| Weight | 10.1 oz (285 g) without cable g |
| Warranty Length | Not specified years |
