TOA WH-4000H – Cardioid Headset Microphone
TOA WH-4000H – Cardioid Headset Microphone is backordered and will ship as soon as it is back in stock.
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TOA WH-4000H – Cardioid Headset Microphone
Product Overview
The TOA WH-4000H is a lightweight cardioid headset microphone for hands-free speech in presentation, worship, and education environments. This headworn microphone uses a unidirectional electret condenser element to favor the presenter's voice while rejecting off-axis sound. It connects to a compatible TOA bodypack transmitter for wireless operation. At about 50 grams, it stays comfortable during long sessions.
Product Description
Presenters who move and gesture need a microphone that keeps a consistent distance from the mouth, which is exactly what a headworn design provides. The WH-4000H positions a cardioid electret capsule on a slim gooseneck for steady pickup and reduced feedback. 
Its unidirectional pattern emphasizes the talker and suppresses ambient noise, supporting higher gain before feedback in live rooms. The microphone draws power from the wireless transmitter and terminates in a 3.5 mm monaural plug for TOA bodypacks such as the WM-5325 and WM-D5200. A 600-ohm output impedance and -66 dB sensitivity deliver a clean signal to the transmitter, and the capsule handles up to 120 dB SPL for loud stages. The frame uses stainless steel with silicone-rubber contact points and a shrink-tube gooseneck for daily comfort and durability. A 1.3 m cable routes neatly to a belt-worn transmitter.
Key Features
- Cardioid Pattern — A unidirectional capsule favors the presenter's voice and rejects off-axis noise.
- Lightweight Design — At roughly 50 g, the headset stays comfortable through long sessions.
- Transmitter-Powered — Draws power from a compatible TOA bodypack, with no battery in the mic.
- 3.5 mm Plug — Terminates in a 3.5 mm monaural plug for WM-5325 and WM-D5200 transmitters.
- High SPL Handling — Manages up to 120 dB SPL for loud stage and worship environments.
- Durable Build — Stainless frame with silicone-rubber contact points withstands regular use.
Technical Specifications
| Type | Electret condenser |
| Directivity | Unidirectional (cardioid) |
| Power Source | Supplied from the wireless transmitter |
| Output Impedance | 600 Ω ±30 % (1 kHz) |
| Sensitivity | -66 dB ±3 dB (0 dB = 1 V/0.1 Pa, 1 kHz) |
| Maximum Input Level | 120 dB SPL |
| Output Terminal | 3.5 mm monaural plug |
| Cable Length | 1.3 m |
| Weight | 50 g (cable included) |
Specifications per the TOA WH-4000H datasheet.
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