AKG WMS420HEADSETBDU1 - UHF Headworn Band D Wireless System with Beltpack, Headset Microphone, and Receiver

AKG WMS420 Headworn Band D - UHF Wireless System with Bodypack, Cardioid Headset Microphone, and SR420 Receiver

The AKG WMS420 Headworn Band D is a complete and reliable UHF wireless system for vocals and vocals in stage, fitness, conferencing, and worship. It includes the SR420 receiver, PT420 body-pack transmitter, and AKG C555L headset microphone (cardioid, condenser), all optimized for clear, stable audio in Band D (863.100–864.900 MHz) , a commonly used license-free range in much of Europe. The system employs switched antenna diversity , pilot tone to prevent unwanted noise, and offers up to 8 hours of operation on a single AA battery. Detachable BNC antennas and balanced XLR and 1/4" jack outputs allow for professional integration into racks and PA systems.

Main features

• Band D (EU 863–865 MHz) : Pre-configured fixed frequencies for quick start-up. Typical D channels: CH1 863.100 MHz; CH2 863.500 MHz; CH3 864.900 MHz; alternating group CHA/CHb/CHC/CHd: 863.100 / 863.675 / 864.525 / 864.900 MHz.
• Audio quality : system response 40 Hz–20 kHz (±3 dB), typical THD 0.8 % at 1 kHz and typical signal-to-noise ratio of 105 dB(A).
• AKG C555L Headset Microphone : Condenser, cardioid pattern, 80 Hz–20 kHz range, adjustable gooseneck and 3-pin mini-XLR connector (TA3F).
• PT420 belt-pack transmitter : compact (60 × 75.5 × 30 mm), 214 g, battery life of up to 8 h with 1×AA and integrated charging contacts (for optional CU400 charger).
• SR420 Receiver : half rack unit (½ 19") with detachable BNC antennas , RF/clip indicators, balanced XLR and 6.35 mm jack outputs, adjustable squelch .
• Switched antenna diversity for increased RF stability; pilot tone blocks out noise when the transmitter is off.
• RF Power in Band D : 10 mW. Up to 3 typical simultaneous systems within Band D.
• Compatibility with the AKG MicroMics range (3-pin mini-XLR connector) and optional RMU4X Pro rack kit for 19" mounting.

Product benefits

• Consistent, intelligible sound thanks to the C555L cardioid microphone and the system's 40 Hz–20 kHz audio bandwidth.
• Instant setup with fixed frequencies and antenna switching: less setup time, more usage time.
• True mobility : lightweight flask with up to 8 hours of battery life on a single AA battery.
• Professional integration : XLR/jack outputs, detachable BNC antennas and rack mounting option.
• Widespread use in the EU : Band D (863–865 MHz), usually license-free in Europe (see local regulations).

Use cases

• Presentations and conferences : hands-free and clear diction even with nearby monitors.
• Fitness classes and tour guides : stable headband, good gain before feedback.
• Theater, worship, and events : easy duplication of systems within Band D (up to ~3 simultaneous) and optional rack mounting.

Frequently Asked Questions

• Can it be used in Europe without a license? The 863–865 MHz band is generally open to use in the EU; always check the regulations in your country/region.
• Can I change the microphone? Yes; the PT420 accepts AKG MicroMics microphones with a mini-XLR (TA3F) connector.
• Rack kit included? Not included; 19" mounting requires the optional AKG RMU4X Pro kit.

Description for projects

Analog UHF system in Band D (863.100–864.900 MHz) with SR420 receiver (½ 19" rack, detachable BNC antennas, XLR and 6.35 mm jack outputs, adjustable squelch), PT420 body-pack transmitter (60 × 75.5 × 30 mm, 214 g, up to 8 h with 1×AA, mini-XLR 3-pin), AKG C555L headset microphone (cardioid, 80 Hz–20 kHz). System audio 40 Hz–20 kHz (±3 dB), typical THD 0.8 %, typical S/N 105 dB(A), switched antenna diversity, pilot tone, RF power 10 mW (Band D), preset fixed frequencies.