AKG WMS420HEADSETBU2 - U2 UHF Headworn Band Wireless System with Beltpack, Headset Microphone, and Receiver

AKG WMS420 Headworn Set Band U2 - UHF Wireless System with PT420 Bodypack, C555 L Headset Microphone and SR420 Receiver

The AKG WMS420 Headworn Set Band U2 is a professional UHF wireless system for hands-free applications in presentations, fitness, education, and stage. The set combines the SR420 receiver (switched diversity, 1/2 rackmount, detachable BNC antennas), the PT420 bodypack , and the C555 L headworn microphone (a moisture-proof cardioid condenser), delivering clear audio, easy integration via balanced XLR and 1/4" jack outputs , and stable deployment with up to 8 simultaneous channels on the same band. The Band U2 covers 614.1–629.9 MHz with 8 factory-fixed frequencies for quick coordination. The C555 L comfortably sits behind the head and can be mounted on the left or right side, maintaining consistent pickup even during movement.

Main features

• C555 L cardioid condenser headworn microphone with damping protection and shock mount; 80–20,000 Hz , 25 mV/Pa , 3-pin mini-XLR connector.
• PT420 transmitter with mini-XLR input, up to 8 hours on 1xAA and charging contacts for NiMH batteries; gain control on the beltpack.
• SR420 receiver with antenna switching diversity , adjustable squelch , RF/clip indicators, XLR (balanced) and 6.3 mm jack (unbalanced) outputs; 1/2 rack format with detachable BNC antennas .
• U2 band (614.1–629.9 MHz) with 8 predefined fixed frequencies : 614.1 / 614.5 / 616.9 / 618.9 / 620.5 / 625.9 / 629.1 / 629.9 MHz.
• Multi-channel operation : up to 8 simultaneous systems on a single band; tuning width up to 30 MHz (depending on the band).
• System Audio Quality : 40–20,000 Hz (±3 dB), Typical S/N 105 dB(A) , Typical THD 0.8% @1 kHz .
• Set contents : SR420, PT420, C555 L microphone, W444 windscreen , spare drip ring , 2 antennas, power supply and 1 AA battery.

Product benefits

• Freedom of movement with stable fixation behind the neck and a cardioid capsule that prioritizes the voice.
• Agile deployment thanks to compatible fixed frequencies and clear receiver indicators.
• Universal integration into mixers, interfaces or powered speakers via XLR or 6.3 mm jack.
• Real-room reliability : switching diversity, adjustable squelch, and BNC antennas for extended coverage with professional accessories.

Use cases

• Training and conferences in classrooms and auditoriums.
• Fitness and dance classes where a stable and sweat-resistant microphone is required.
• Live and events with presenters or musicians who need hands-free.

Frequently Asked Questions

What is the range? Typically ≈30 m line-of-sight (can be extended with suitable external antennas).

Can I exchange the microphone for another AKG model? Yes. The PT420 bodypack is compatible with AKG microphones with a 3-pin mini-XLR connector (e.g., C417 L, MKG L instrument cable).

Is the RF power adjustable? The system offers 10/20/50 mW depending on the band/region. Check local regulations before selecting the power or band.

Description for projects

AKG WMS420 Headworn Set Band U2 UHF Wireless System (614.1–629.9 MHz, 8 fixed frequencies). Including SR420 (XLR and 1/4" jack outputs; switching diversity; adjustable squelch; RF/clip indicators; detachable BNC antennas; 150 × 44 × 200 mm ), PT420 (3-pin mini XLR input; up to 8 h battery life with 1×AA; charging contacts; 60 × 75.5 × 30 mm , 214 g ) and C555 L (cardioid condenser; 80–20,000 Hz ; 25 mV/Pa ; 3-pin mini XLR; weight approx. 26 g ). System Audio: 40–20,000 Hz , S/N 105 dB(A) , THD 0.8% (typ.).