AKG HT420BDD - HT420 Band D Wireless Microphone

AKG HT420BDD - Band D (863.1–864.9 MHz) Handheld Wireless Microphone with Supercardioid D5 Dynamic Capsule

The AKG HT420BDD is the handheld transmitter in the WMS420 series, designed for live vocals, presentations, and fixed installations requiring reliability and crystal-clear sound. It features the AKG D5 dynamic capsule with a supercardioid pattern, designed to offer high feedback rejection and low handling noise. Its analog FM electronics provide an audio bandwidth of 70 Hz to 20 kHz (±3 dB), a signal-to-noise ratio of 105 dB-A , and a THD of 0.8% at 1 kHz , ensuring clarity in both speech and singing. The Band D version operates in the 863.1–864.9 MHz range with selectable fixed channels and 10 mW transmit power, ideal for environments with basic frequency coordination.

It's built for everyday professional use: a spring-steel mesh grille protects the capsule, a silent On/Mute/Off switch, and a gain control on the transmitter itself. It runs on one AA battery (alkaline or NiMH), offering up to 8 hours of battery life , and features charging contacts compatible with the optional AKG CU400 cradle. Its antenna is integrated into the body, and synchronization is manual, simplifying use and maintenance. It is fully compatible with AKG SR420 receivers within the WMS420 series.

Main features

• Capsule: AKG D5 dynamic with supercardioid pattern for maximum feedback rejection.
• Band: Band D (UHF 863.1–864.9 MHz) with selectable fixed channels.
• RF Power: 10 mW (Band D).
• Audio: 70 Hz–20 kHz (±3 dB), 105 dB-A SNR, 0.8% THD at 1 kHz.
• Battery life: up to 8 hours with 1 x AA (alkaline or NiMH); low battery indicator.
• Operation: Silent On/Mute/Off switch and gain control on the transmitter.
• Construction: spring steel grille and integrated antenna.
• Charging: Integrated charging contacts (optional AKG CU400 dock).
• Compatibility: AKG WMS420 systems with SR420 receivers.
• Dimensions and weight: 237 × 51 mm; 214 g.

Product benefits

• Defined vocals on demanding stages: The supercardioid D5 capsule keeps your vocals ahead of the mix with excellent side and rear rejection.
• Simple and safe operation: manual channel selection, silent switching and gain control allow quick adjustments without unwanted noise.
• Long days without interruptions: up to 8 hours with a single AA and low battery warning.
• Rugged Touring Design: Steel grille and stable electronics for continuous live, rental, or installation use.
• Direct integration into WMS420: Native compatibility with SR420 series receivers and antenna/charging accessories.

Use cases

• Live vocals: concerts, choirs, church music, and bands that require feedback rejection and easy handling.
• Corporate events and education: talks, auditoriums, classrooms, and multipurpose rooms.
• Fixed installations: theaters, cultural centers and places of worship with WMS420 systems.

Frequently Asked Questions

• What frequencies does the Band D version operate on? 863.1–864.9 MHz, with selectable fixed channels within that range.
• How many simultaneous systems can be used in Band D? In practice, up to three systems in parallel within Band D, depending on the manufacturer's frequency coordination.
• Does it include a receiver? No. It's the WMS420 series handheld transmitter and is used with AKG SR420 receivers.

Description for projects

AKG HT420 Band D handheld wireless transmitter for WMS420 systems; supercardioid D5 dynamic capsule; FM modulation; 863.1–864.9 MHz band with fixed channels; RF power 10 mW; audio 70 Hz–20 kHz (±3 dB); SNR 105 dB-A; THD 0.8 % at 1 kHz; gain control and On/Mute/Off switch; power supply 1 × AA (alkaline or NiMH) with up to 8 h; integrated charging contacts; dimensions 237 × 51 mm; weight 214 g; compatible with SR420 receiver.