AKG WMS420 Vocal Set
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AKG
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The WMS 420 Series: An AKG Solution Designed for Field and Installation Use
The WMS 420 range was developed to meet the needs of users who alternate between mobile performances and fixed installations: theaters, places of worship, events, conferences, presentations, etc. The principle is simple and effective: an SR420 receiver paired with a transmitter (here the HT420 handheld) to achieve flexible UHF transmission, with the possibility to manage multiple radio links within the same frequency band (up to 8 compatible channels per band). In this configuration, you benefit from a complete, coherent, and scalable system adapted to everyday constraints.
For Whom and For What Uses? Singing, Speech, Hosting, Stage
This pack is especially suitable if you are looking for a wireless handheld microphone ready to perform in demanding contexts: live singing, dynamic speaking, hosting, rehearsals, small to medium-sized stages, or installations where a robust and easy-to-use microphone is desired. The supercardioid directivity of the D5 capsule helps maintain a present and intelligible voice while limiting the pickup of unwanted side sounds, a real advantage when the stage is noisy or when stage monitors are close.
Reliable Transmission and a D5 Capsule Tailored for Live Use
SR420 Receiver: Stability and Continuity Thanks to Antenna Diversity
The SR420 relies on an FM architecture with antenna diversity: the system uses the most favorable reception to limit dropouts and improve perceived reliability under real conditions. Another important advantage: its detachable antennas open the door to more professional configurations, such as the use of accessories dedicated to multi-channel systems (antenna splitters, directional antennas), which facilitates integration when multiplying RF links on the same site.
HT420 Handheld Transmitter + D5 Capsule: Presence, Feedback Control, and Handling Comfort
The handheld transmitter HT420 features the renowned D5 supercardioid dynamic capsule. It is known for its high gain before feedback, low sensitivity to handling noise, and a stage-typical sound reproduction designed to help the voice stand out naturally in the mix. For a singer, host, or speaker, this translates into a more usable, stable sound capture that is easier to place in the sound system.
Multi-Channel: A Flexible Approach to Managing Multiple Simultaneous Links
The WMS 420 systems are designed to operate in multi-channel mode when required, with up to 8 compatible frequencies per band. This is a concrete asset for small technical teams, service providers, and equipped venues seeking to standardize a wireless microphone fleet and maintain a clear deployment logic (receivers, antennas, accessories, and identical procedures).
Charging Contacts and Battery Indicator: Smoother Operation
In intensive use, battery life and power monitoring become essential. The HT420 features a low battery indicator to anticipate replacements, and the transmitters in the series include charging contacts when used with compatible rechargeable batteries. This approach can reduce operating costs and simplify logistics, especially in fixed installations where reliable routines (charging, rotation, monitoring) are prioritized.
Technical specifications
| Category | Complete system | Capsule | dynamic |
| Directivity | supercardioid | ||
| System Type | complete UHF system (SR420 receiver + HT420 handheld transmitter) | Transmitter Power Supply | 1.5 V AA |
| Frequency Band (described version) | U2 band 614.100 to 629.900 MHz | Receiver Power Supply | 220 V via external power supply |
| Frequency Type | variable | Power-Related Features | low battery indicator; charging contacts (with compatible rechargeable batteries) |
| Modulation | FM, antenna diversity | Receiver Format | 1U half-rack width |
| Number of Compatible Channels | up to 8 compatible channels per frequency band | Antennas | detachable |
| Available Bands (depending on version) | A band 530.025 to 559.000 MHz; U1 band 606.100 to 613.900 MHz; U2 band 614.100 to 629.900 MHz; B1 band 748.100 to 751.900 MHz; B2 band 774.100 to 777.900 MHz | Handheld Transmitter Dimensions | diameter 50 mm x 235 mm |
| Frequency Response | 40 Hz to 20 kHz | Receiver Dimensions | 200 x 150 x 145 mm |
| Signal-to-Noise Ratio | 105 dBA | Transmitter Weight | 221 g |
| Audio Output | 1 balanced output on XLR, duplicated on 6.35mm unbalanced Jack | Receiver Weight | 373 g |
| Distortion | not specified | Included | external power supply, antennas, microphone clip, AA battery |
| Battery Life | 8 hours (AA alkaline LR6 battery) | Optional | rack mounting kit |
Questions frequently asked
Is the AKG WMS420 Vocal Set suitable for singing with stage monitors?
The D5 supercardioid dynamic capsule allows for a high gain-before-feedback level and reduces off-axis pickup. It is designed to keep the voice present on stage.
How many wireless microphones can operate simultaneously?
Up to 8 compatible channels can be used per frequency band. The SR420 receiver’s detachable antennas enable the use of accessories dedicated to multi-channel installations.
What is the battery life of the HT420 handheld microphone?
The HT420 transmitter runs up to 8 hours with a LR6 AA alkaline battery. A low battery indicator helps anticipate when the battery needs replacing.
What audio outputs are available on the receiver?
The SR420 features a balanced XLR output and an unbalanced 6.35 mm jack output. Both connectors provide the receiver's audio signal.
Which frequency band does this version use?
The described version operates in the U2 band, from 614.100 to 629.900 MHz. Versions A, U1, B1, and B2 are also available depending on the chosen band.
