Alpha Theta HDJ-F9 Wireless DJ Headphones with FREE! Extension Cable

Secure the ultimate high-mobility performance setup with the Alpha Theta HDJ-F9 Wireless DJ Headphones Bundle, engineered explicitly for advanced electronic music production labs, campus radio stations, and university performance spaces.

This value-driven hardware kit combines the flagship HDJ-F9 professional monitoring headset with a FREE Hosa HPE-325 Heavy-Duty 25-Foot Headphone Extension Cable - an essential hardwired redundancy piece. The headphones utilize proprietary ultra-low-latency SonicLink wireless transmission technology to sync perfectly with professional mixing consoles, completely eliminating the distracting visual and physical layout lag inherent in standard Bluetooth setups. When transitioning to deep studio editing layouts or monitoring from across a live lecture stage, the premium bundled Hosa extension cable bridges the gap, supplying pristine, interference-free stereo audio signal delivery across its rugged 25-foot structural span.

Key Features Matrix

• SonicLink Wireless Integration: Deploys ultra-low-latency wireless audio transmission to ensure instantaneous monitoring response for campus performance booths.
• High-Definition Drivers: Features premium 40mm dome drivers tuned to articulate deep sub-bass frequencies and crisp high-frequency transient details.
• Long-Life Battery Performance: Delivers up to 9 hours of continuous playback via SonicLink or up to 25 hours via standard Bluetooth setups.
• FREE! ($29.99 Value) Hosa Extension Cable: Includes a premium 25-foot extension cord with an Oxygen-Free Copper core to extend hardwired studio range.
• Advanced Noise Isolation: Utilizes customized ear pads and reinforced chamber housings to block ambient classroom or live venue sound bleed.
• Heavy-Duty Construction: Built with a rugged, flexible headband structure that passes rigorous military-grade shock and impact testing limits.
• Comfortable Ergonomic Fit: Finished with premium low-resilience polyurethane padding to prevent head fatigue during all-day lab editing sessions.
• Detachable Patch Cables: Comes packed with a 1.2-meter coiled cord alongside a 1.6-meter straight cable for immediate backup options.
• Bluetooth Multi-Pairing: Syncs natively with administrative desktop computers, student tablets, and mobile training smartphones.
• Precision Stereo Imaging: Separates left and right channel feeds cleanly to help music production students identify spatial mixing errors.
• Locking Cable Receptacle: Uses a secure bayonet-style connection terminal to prevent accidental cable pullout during live physical monitoring.
• Foldable Spatial Design: Folds into a compact, space-saving form factor for simple, low-volume storage inside school equipment lockers.
• SonicLink Transmitter Compatibility: Pairs smoothly with the optional HP-TX01 hardware transmitter to upgrade older analog live gear.
• Complete Adapter Kit: Includes a gold-plated 1/4-inch screw-on stereo adapter plug for plug-and-play installation into any audio panel.

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Hardware Specification Field	Technical Component Data & Operational Boundaries Boundaries
Acoustic Architecture	Closed-back, dynamic on-ear design featuring integrated bass-reflex housing chambers for tight transient kick alignment.
Driver Configuration	ø40 mm dome-type transducers engineered with high-efficiency PEEK-PU-PEEK composite film diaphragms to minimize audio distortion.
Frequency Response	5 Hz to 30,000 Hz ultra-wide acoustic range capturing sub-bass and high-frequency harmonics.
Electrical Impedance	32 Ω (Ohm) nominal internal load resistance matching standard media interfaces and studio mixers.
Output Sound Pressure	106 dB maximum sensitivity level providing clean audio output inside noisy environments.
SonicLink™ Wireless Mode	Proprietary 2.4 GHz ultra-low-latency transmission with approximately 9 ms latency and up to 49 feet unobstructed line-of-sight range.
SonicLink™ Runtime	Approximately 9 hours continuous operation with status LED off; approximately 7 hours runtime with status LED active.
Bluetooth® Core Specs	Bluetooth Standard Version 5.3; maximum wireless link range up to 32 feet across unobstructed clear lines.
Bluetooth® Codecs & Profiles	Supported profiles: A2DP, AVRCP, HSP, HFP; supported compression audio codecs: standard SBC and high-clarity AAC.
Bluetooth® Runtime	Approximately 25 hours continuous playback with status LED off; approximately 13 hours runtime with status LED active.
Power Charging Boundaries	Approximately 2.5 hours full charge cycle from empty via USB-C; rapid 30-minute charge gives up to 2.5 hours of emergency use.
Hardware Mechanical Build	Die-cast aluminum adjustable headband sliders combined with heavy-duty swivel hangers and flexible silicone padding.
Hardware Chassis Weight	10.1 oz (285 grams) maximum structural net weight excluding detached audio interconnect cables.
Detached Coiled Interconnect	1.2-meter single-sided coiled cord extending up to 3.0 meters (approximately 118 inches) with an L-shaped terminal plug.
Hosa HPE-325 Extension	Included bundled value accessory; heavy-duty 25-foot (300 inches) 1/4-inch TRS to 1/4-inch TRS extensions cord with OFC copper shielding.
Manufacturer Warranty	2-year limited parts and labor hardware coverage certified for professional deployment.

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What's Included

• Alpha Theta HDJ-F9 Professional Wireless Monitoring Headset
• FREE Hosa HPE-325 25-Foot 1/4" TRS Headphone Extension Cable
• 1.2 Meter Coiled Audio Cable (extends to approximately 118 inches)
• 1.6 Meter Straight Studio Audio Cable (approximately 63 inches)
• Threaded 6.3 mm (1/4") Gold-Plated Stereo Adapter Jack
• USB Type-C Heavy-Duty Hardware Recharging Cable
• Scholastic Equipment Travel Storage Pouch

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Pro Tip: 💡 SonicLink Latency Configuration
To achieve true ultra-low-latency monitoring in your media lab, ensure the transmitter base is connected directly via a dedicated audio output on your mixing console rather than routing through an intermediate USB software driver pool. Check out our Professional Audio Cables Collection to grab any additional interface interconnects your studio layout requires.