Shure QLXD2/B87A Wireless Handheld Transmitter with Beta 87A Microphone

The QLXD2/B87A is featuring transparent 24-bit digital audio quality & it is providing incredibly efficient RF spectrum usage. Therefore, the QLXD2/B87A is perfect for wireless vocals in presentation spaces, music venues & houses of worship. The QLXD2/B87A is simple to use and can easily be synced with a wireless receiver over IR only at the push of a button to maintain a clear and uninterrupted signal over its entire100m (300ft) range. The metal construction is ensuring durability, and a broad selection of compatible microphone choices is offering legendary Shure sound signatures.

Features:

• 20 Hz to 20 kHz frequency range with a flat response (actual response is microphone dependent)
• Interchangeable Shure microphone capsules, including the legendary SM58®
• AES 256-bit encryption for secure transmission
• Over 120 dB of dynamic range – no transmitter gain adjustment needed
• 1, 10 mW selectable RF output power
• Up to 9 hours continuous use with 2 x AA alkaline batteries
• Optional Shure lithium-ion rechargeable battery provides up to 10 hours of continuous use and reports remaining runtime in hours and minutes
• External charging contacts for docked charging
• Backlit LCD with easy to navigate menu and controls
• Selectable display mode showing group/channel, frequency, or battery runtime
• 100 meter (330 ft.) line-of-sight operating range
• Rugged metal construction
• Frequency and power lockout

• Working Range: 328' / 100 m
• RF: Tuning Step Size: 25 kHz, Varies by Region
• Image Rejection: >70 dB, Typical
• RF Sensitivity: −97 dBm at 10⁻⁵ BER
• Latency: <2.9 ms
• Frequency Response: 20 Hz to 20 kHz
• Audio Dynamic Range: System Gain @ +10: >120 dB, A-Weighted, Typical
• Total Harmonic Distortion (THD): −12 dBFS Input, System Gain @ +10: <0.1%
• Polarity: System Audio: Positive Pressure on Microphone Diaphragm Produces Positive Voltage on Pin 2 (with respect to Pin 3 of XLR output) and the Tip of the 6.35 mm (1/4-inch) Output.
• Operating Temperature Range: 0° to 122°F / -18° to 50°C Note: Battery Characteristics May Limit this Range 
• Storage Temperature Range: -20° to 165°F / -29° to 74°C Note: Battery Characteristics May Limit this Range
• Mic Offset Range: 0 to 21 dB (in 3 dB Steps)
• Battery Type: Shure SB900 Rechargeable Li-Ion or AA Batteries 1.5 V
• Battery Runtime: At 10 W Shure SB900: up to 10 hours. Alkaline: up to 9 Hours
• Audio Input: Configuration: UnbalancedMaximum Input Level 1 kHz at 1% THD: 145 dB SPL (SM58), Typical
  Note: Dependent on Microphone Type
• Maximum Input Level: 1 kHz at 1% THD: 145 dB SPL (SM58), Typical
• Capsule: Beta 87A
• RF Output: Antenna Type: Integrated Single Band HelicalOccupied Bandwidth: <200 kHz modulation Type: Shure Proprietary Digital. Power: 1 mW or 10 mW (Varies by Region)
• Housing: Machined Aluminum
• Dimensions (L x Diam): 10.1 x 1.5" / 256 x 37 mm
• Weight: 12.2 oz / 347 g without Batteries