Making the jump to wireless should be liberating, not challenging. Shure BLX Wireless Systems combine professional quality sound with simple setup and an intuitive interface for performance you can trust right out of the box. Precision built and available in a variety of handheld, lavalier, instrument and headset configurations, it's the most accessible way to own the stage.

The PGA31 performance headset microphone for general, speaking and performance use is a permanently-biased electret condenser microphone. Engineered to provide maximum versatility and reliable performance in a wide array of conditions at an affordable price. The wearable design offers improved comfort and a secure fit for hands-free operation in any situation, while the unidirectional (cardioid) pickup pattern provides excellent off-axis rejection for higher gain-before-feedback when using a stage monitor.

Shure BLX14/PGA31 Wireless Headset System Features:

• Up to 12 compatible systems per frequency band (region dependent.)
• Microprocessor-controlled internal antenna diversity.
• One-touch QuickScan frequency selection quickly locates the best frequency.
• 1/4" and XLR audio outputs.
• Two color audio status indicator LED.
• The PGA31 features a wearable wireframe headset that fits securely for multi-instrumentalists and active performers.
• Permanently-charged electret condenser element for detailed, crisp vocals.
• Unidirectional (cardioid) polar pattern rejects unwanted noise for improved sound quality and higher gain-before-feedback.
• Flexible gooseneck design and discrete adjustment options optimize microphone positioning for further source isolation.
• Included windscreen tames plosives for clean and intelligible sound reproduction.
• Available with a wide variety of Shure wireless systems, renowned for ease-of-use and reliable performance.
• Included windscreen tames plosive, breath and wind noise for clean and intelligible sound.
• Tailored frequency response primed for great sound on vocals.
• Legendary Shure precision engineering for durability and performance.

Shure BLX14/PGA31 Specifications:

System
Working Range: 91 m (300 ft) Line of Sight (Actual range depends on RF signal absorption, reflection and interference.)
Audio Frequency Response: 50 to 15,000 Hz (Dependent on microphone type)
Total Harmonic Distortion (Ref. ±33 kHz deviation with 1 kHz tone): 0.5%, typical
Dynamic Range: 100 dB, A-weighted, typical
Operating Temperature: -18°C (0°F) to 57°C (135°F) (Battery characteristics may limit this range.)
Polarity: Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 (with respect to pin 3 of low-impedance output) and the tip of the high impedance 1/4-inch output.

BLX1
Audio Input Level:
max: -16 dBV maximum
min (0 dB): +10 dBV maximum

Gain Adjustment Range: 26 dB
Input Impedance: 1 MΩ
RF Transmitter Output: 10 mW, typical (varies by region)
Dimensions: 4.33 in. X 2.52 in. X 0.83 in. (110 mm X 64 mm X 21 mm) H x W x D
Weight: 2.6 oz. (75 g), without batteries
Housing: Molded ABS
Power Requirements: 2 LR6 AA batteries, 1.5 V, alkaline
Battery Life: up to 14 hours (alkaline)

Audio Input Level:
0dB: -20 dBV maximum
-10dB: -10 dBV maximum

Gain Adjustment Range: 10 dB
RF Transmitter Output: 10 mW, typical (varies by region)
Dimensions: 8.82 in. X 2.09 in. (224 mm X 53 mm) L x Dia.
Weight: 7.7 oz. (218 g) without batteries
Housing: Molded ABS
Power Requirements: 2 LR6 AA batteries, 1.5 V, alkaline
Battery Life: up to 14 hours (alkaline)

BLX4
Output Impedance:
XLR connector: 200 Ω
6.35 mm (1/4") connector: 50 Ω

Audio Output Level (Ref. ±33 kHz deviation with 1 kHz tone):
XLR connector: –27 dBV (into 100 kΩ load)
6.35 mm (1/4") connector: –13 dBV (into 100 kΩ load)

RF Sensitivity: -105 dBm for 12 dB SINAD, typical
Image Rejection: >50 dB, typical
Dimensions: 1.57 in. X 7.40 in. X 4.06in. (40 mm X 188 mm X 103 mm) H x W x D
Weight: 8.5 oz. (241 g)
Housing: Molded ABS
Power Requirements: 12–15 V DC @ 235 mA (BLX88, 320 mA), supplied by external power supply (tip positive)

PGA31
Type: Electret Condenser
Frequency Response: 60 Hz to 20,000 Hz
Polar Pattern: Unidirectional (Cardioid)
Output Impedance @ 1 kHz: 600 Ω
Audio Output Level: -50.0 dBV/Pa
Signal-To-Noise Ratio ^[1] @ 1 kHz: 66 dB
Maximum SPL ^[1]: 1000 Ω load, @ 3%THD / 145.0 dB
Dynamic Range ^[1] @ 1 kHz, 1000 Ω load: 117.0 dB
Equivalent Output Noise ^[1] (typical, A-Weighted): 28 dB
Power Requirements: +5 V DC (nominal), 10 V maximum (DC bias)
Polarity: Positive pressure on diaphragm produces positive voltage on pin 3 with respect to pin 1
Cable: 1.3 m (50 in.)
Connector: TA4F
Net Weight: 45 g (1.59 oz.)

^{[1] Measurements taken using RK100PK preamp set @ 0 dB using 8k bias resistor.
*All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity.}