The Yealink YHS34 Mono is an over-the-head monaural wired headset tailored for high-volume corporate offices, call centers, and SOHO environments. Designed from the ground up to pair natively with the entire range of Yealink enterprise IP phones, it connects directly to your desk phone's dedicated RJ9 headset port. By automatically optimizing acoustic parameters when plugged into a Yealink VoIP telephone, it delivers rich, distraction-free voice communication right out of the box.
• Key Features
Plug-and-Play QD to RJ9 Connectivity: Includes a 0.9m headset cord with a Quick Disconnect (QD) inline coupler and a 1.2m QD-to-RJ9 (4P4C) bottom cable, allowing agents to step away from their desk mid-call without removing the headset.
Noise-Canceling Unidirectional Microphone: Filters out ambient office chatter and keyboard clicks while capturing crisp vocal clarity across a 100 Hz – 8 kHz wideband frequency range.
HD Voice & Independent Speaker Cavity: Equipped with a 28mm wideband speaker (20 Hz – 20 kHz) and passive noise cancellation for lifelike caller audio.
ActiveProtection Hearing Safeguard: Built-in acoustic shock protection shields users from sudden volume spikes and high-decibel line interference.
Ultra-Lightweight 50g Ergonomics: Weighing only 50g with a plush, replaceable leatherette ear pad (as opposed to basic foam on the Lite version), it eliminates head and ear fatigue during 8-hour shifts.
330° Bendable Boom Arm: Flexible microphone boom rotates 330 degrees for left-ear or right-ear placement and precise lip-to-mic positioning without snapping.
• Performance / Technology
Engineered with a high signal-to-noise ratio (SNR) 28mm driver and an independent acoustic cavity, the Yealink YHS34 Mono maximizes voice intelligibility on VoIP calls. Its Uni-Directional Electret Condenser Microphone (ECM) isolates the speaker’s voice at -44.0 dB sensitivity, ensuring customers hear you clearly even in busy open-plan offices. Meanwhile, ActiveProtection technology actively monitors incoming audio signals to clamp sudden acoustic bursts before they reach the ear.
• Design & Ergonomics
The monaural (single-ear) headband architecture is purpose-built for front-desk receptionists, team leads, and collaborative office workers who need crystal-clear phone audio while still hearing colleagues speaking to them in person. Unlike the entry-level YHS34 Lite (which uses foam cushions), the standard YHS34 Mono ships with a durable, easy-to-clean protein leatherette ear cushion that stays cool and comfortable throughout intensive daily use.
• Compatibility / Use Cases
The Yealink YHS34 Mono is 100% plug-and-play compatible with all Yealink IP Phones featuring an RJ9 headset jack, including the T3 series (T30, T31P, T31G, T33G), T4 series (T42U, T43U, T46U, T48U), T5 series (T53W, T54W, T57W, T58W), and T7X/T8X series (T73U, T74U, T77U, T88W). (Note: Uses a modular RJ9 telephone connector; not for direct connection to 3.5mm smartphone jacks or USB computer ports without an adapter).
• Why This Product Stands Out
Generic third-party RJ9 headsets often suffer from low microphone gain or impedance mismatches on VoIP desk phones unless you manually rewire pinouts. Because the YHS34 Mono is natively engineered by Yealink, your Yealink desk phone automatically calibrates audio gain for instant HD Wideband Voice—while the Quick Disconnect (QD) latch extends the lifespan of the headset by letting you swap bottom cables in seconds.
