Shure SLXD24+/B58 Digital Wireless Handheld System with Beta 58A Supercardioid Dynamic Microphone K55

The SLXD+ system delivers transparent 24-bit digital audio with an extended dynamic range, ensuring vocals remain clear, detailed, and natural. The Beta 58A supercardioid capsule is optimised for live performance, providing strong midrange presence and excellent feedback rejection. This combination allows vocals to cut through dense mixes while maintaining clarity and control in challenging live environments.

Reliable RF performance

With a wide K55 tuning range from 606–694 MHz, the SLXD+ system provides dependable RF stability across demanding venues. Advanced digital transmission supports multiple compatible systems in the same frequency band, making it suitable for clubs, theatres, houses of worship, and touring productions that require consistent wireless performance.

Remote control with ShowLink Ease

ShowLink Ease enables a dedicated control link between the receiver and handheld transmitter, allowing key parameters to be adjusted remotely. Engineers can manage gain, change frequencies, and respond to interference without handling the microphone, streamlining workflows and reducing disruption during live events.

Built for professional use

Constructed with rugged metal housings, the SLXD+ handheld transmitter and receiver are designed for long-term professional use. AES-256 encryption ensures secure transmission, while flexible power options, including AA batteries or rechargeable packs, provide dependable operation for rehearsals, performances, and extended events.

Features

• Delivers transparent 24-bit digital audio for professional vocal performance
• Beta 58A capsule provides focused sound with excellent feedback rejection
• Wide tuning range supports reliable operation in busy RF environments
• ShowLink Ease allows remote control of transmitter settings
• Automatic frequency management maintains stable wireless performance
• AES-256 encryption ensures secure and interference-resistant transmission
• Rugged metal construction withstands touring and regular stage use
• Flexible battery options suit rehearsals, services, and live shows

Specifications

System

• Wireless Type: Digital UHF
• Audio Resolution: 24-bit
• Latency: 2.8 ms
• Dynamic Range: 118 dB A-weighted
• Audio Frequency Response: 20 Hz – 20 kHz (+1, –2 dB)
• Total Harmonic Distortion: <0.02%
• Working Range: Up to 100 m

RF Performance

• Operating Band: K55
• Frequency Range: 606 – 694 MHz
• RF Tuning Step Size: 25 kHz
• RF Sensitivity: –97 dBm at 10⁻⁵ BER
• Image Rejection: >85 dB typical
• Encryption: AES-256

Handheld Transmitter

• Model: SLXD2+/B58
• Microphone Capsule: Beta 58A Supercardioid Dynamic
• RF Output Power: 1 mW / 10 mW / 30 mW
• Antenna Type: Integrated dipole
• Battery Type: 2 x AA or Shure SB903 rechargeable battery
• Battery Life: Up to 8 hours
• Housing: Aluminium, zinc alloy, PC/ABS

Receiver

• Model: SLXD4+
• Receiver Type: Single-channel digital wireless
• Audio Outputs: Balanced XLR and 6.35 mm jack
• Output Impedance: XLR 150–500 Ω; Jack 1.1 kΩ
• Gain Adjustment Range: –18 dB to +42 dB
• Network Interface: Ethernet 10/100 Mbps
• Control Software: Wireless Workbench and WWB Mobile

Power and Construction

• Receiver Power Requirements: 15 VDC external supply
• Receiver Housing: Galvanised steel

Dimensions and Weight

• Receiver Dimensions (W x D x H): 197 mm x 152 mm x 42 mm; Weight: 0.9 kg
• Handheld Transmitter Dimensions (Dia. x L): 41 mm x 176 mm; Weight: 0.2 kg