AKG WMS420 Headworn Set
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- This item is covered for 3 years
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AKG
https://www.akg.com
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A reliable solution in the WMS 420 range: flexibility and optimized operating cost
The AKG WMS 420 series was designed to meet the needs of users seeking a UHF wireless microphone system that is easy to deploy while maintaining a "pro" logic when managing multiple radio links. A complete WMS 420 system revolves around the SR420 receiver and a choice of transmitter: HT420 handheld transmitter or PT420 bodypack transmitter. In this "headset" configuration, the PT420 bodypack transmitter pairs with the C555L to prioritize comfort, discretion, and freedom of movement.
Another notable feature of this range: the transmitters have charging contacts when used with rechargeable batteries, a rare approach at this level, which helps reduce operating costs for regular use and installations.
Who and for what uses: voice, presentation, sports, light stage
This system is particularly suitable if you are looking for a wireless headset microphone that stays in place and maintains a consistent voice level, where a handheld microphone requires specific gestures and a lavalier microphone can be more sensitive to rubbing. The C555L is well suited for presentations, hosting, theater, group classes (fitness, dance), conferences, as well as any situation where the speaker needs to talk while moving or keeping their hands free.
The UHF transmission and the possibility to work with up to 8 compatible systems per band also make it a solid base for small multi-speaker setups, both fixed and mobile.
Technical specifications
| Category | Complete system | Capsule | electret |
Questions frequently asked
Is the AKG WMS420 Headworn Set suitable for fitness classes and presentations?
The C555L headworn microphone paired with the PT420 bodypack transmitter allows hands-free use and remains suitable for movement. This setup is recommended for presentations, theater, group fitness or dance classes.
What is the battery life of the bodypack transmitter?
The PT420 transmitter operates up to 8 hours with a 1.5 V LR6 alkaline AA battery. A low battery indicator helps anticipate replacement.
Can multiple wireless microphones be used simultaneously?
Up to 8 compatible systems can operate per frequency band. The supplied model operates in the U2 band, from 614.100 to 629.900 MHz.
What audio outputs are available on the receiver?
The SR420 receiver features a balanced XLR output and an unbalanced 6.35 mm jack output. Its half-rack 1U size can accommodate an optional rack mount kit.
How is radio reception secured during movement?
The FM transmission uses antenna diversity designed to minimize dropouts caused by radio field variations. The specified frequency response extends from 40 Hz to 20 kHz, with a signal-to-noise ratio of 105 dBa.



