Shure BLX14R/SM35 Wireless Headset Microphone System

This Shure wireless system is ideal for highly active performers. Its noise-free mic zeros in on your voice, while its headset is comfortable and durable.

The Shure BLX14R/SM35 Wireless Headset Microphone System joins world-class design and construction with simple and easy setup and operation, featuring QuickScan frequency selection and the durable SM35 headset condenser microphone which gives multi-instrumentalists the freedom to express themselves without having to sacrifice the sound quality found in traditional microphones.

For performers who wish to unplug from the wire, BLX Wireless Systems are the clearest choice. Shure delivers wireless confidence with legendary sound from industry-renown microphones, decades of wireless design proficiency and world-class construction.

The SM35 headset condenser microphone from Shure features a tight, unidirectional (cardioid) pickup pattern provides excellent rejection of off-axis sound sources to prevent feedback and signal bleed for superior performance on stage. Standard TA4F (TQG) connectivity seamlessly integrates into any Shure wireless bodypack system, and its availability in a number of bundled systems makes it appropriate for any stage, ranging from small clubs to large installations and arena tours.


- Wearable wireframe headset fits securely and comfortably for active performers and multi-instrumentalists
- Tight, unidirectional (cardioid) condenser pickup pattern rejects signal bleed and feedback for use on loud stages and behind floor monitors
- Flexible gooseneck design allows for optimized placement to further improve source isolation
- Lightweight and read more low-profile form enables comfortable, long-wearing use
- TA4F connector compatible with any Shure wireless bodypack system
- Locking snap-fit windscreen tames plosive, breath and wind noise for clean and intelligible sound
- Tailored frequency response refined for clear, crisp vocal reproduction
- Legendary Shure precision engineering for durability and performance

BLX1 Bodypack Transmitter:
- Up to 14 hours of continuous use (2AA batteries)
- Up to 300 feet (100m) transmission radius (line of sight)
- Quick and easy frequency matching (GROUP and CHANNEL selection buttons)
- TQG connection for use with Shure lavalier, headset, earset and instrument microphones and guitar cables
- Tactile on/off switch
- Adjustable gain control
- Lightweight, rugged construction

BLX4R Single Channel Receiver:
- Rack mount kit included
- Adjustable output level
- Removable antennas for quick antenna distribution
- One-touch QuickScan frequency selection quickly locates the best open frequency
- Up to 12 compatible systems per frequency band
- Two-color audio and RF status LED indicators
- LCD display with detailed RF and audio metering
- XLR and 1/4-inch output connectors

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- Working Range 91 m (300 ft) Line of Sight
- Audio Frequency Response 50 to 15,000 Hz (Dependent on microphone type)
- Total Harmonic Distortion 0.5%, typical
- Dynamic Range 100 dB, A-weighted, typical
- Operating Temperature -18*C (0*F) to 57*C (135*F)

BLX1 Bodypack Transmitter:
- Audio Input Level gain: max: -16 dBV maximum
- Audio Input Level gain min: (0 dB): +10 dBV maximum
- Gain Adjustment Range: 26 dB
- Input Impedance: 1 MO
- RF Transmitter Output: 10 mW, typical varies by region
- Dimensions: 110 x 64 x 21 mm (H x W x D)
- Weight: 75 g (2.6 oz.), without batteries
- Housing Molded: ABS
- Power Requirements: 2 LR6 AA batteries, 1.5 V, alkaline
- Battery Life: up to 14 hours (alkaline)

BLX4R Wireless Receiver:
- Output Impedance XLR connector: 200 O
- Output Impedance 6.35 mm (1/4") connector: 50 O
- Audio Output Level XLR connector: -20.5 dBV (into 100 kO load)
- Audio Output Level 6.35 mm (1/4") connector: -13 dBV (into 100 kO load)
- RF Sensitivity: -105 dBm for 12 dB SINAD, typical
- Image Rejection: >50 dB, typical
- Dimensions: 50 mm X 198 mm X 163 mm H x W x D
- Weight: 998 g (2.2 lb.) without antennas
- Housing Molded: ABS, steel
- Power Requirements: 12-15 V DC @ 260 mA, supplied by external power supply

SM35 Performance Headset Condenser Microphone:
- Type: Electret Condenser
- Frequency Response: 40 Hz to 20,000 Hz
- Polar Pattern: Unidirectional (Cardioid)
- Output Impedance: @ 1 kHz 2400 O
- Audio Output Level: -59.0 dBV/Pa
- Signal-To-Noise Ratio: @ 1 kHz 55 dB
- Maximum SPL: 1000 O load, @ 1% THD 153.0 dB
- Dynamic Range: @ 1 kHz, 1000 O load 114.0 dB
- Equivalent Output Noise: Typical, A-Weighted 39 dB
- Power Requirements: +5 V DC (nominal), 10 V maximum (DC bias)
- Cable: 1.1 m (45 in.)
- Connector: TA4F
- Net Weight: 72 g (2.53 oz.)
- Included: BLX4 wireless receiver; BLX1 bodypack transmitter; SM35 Performance Headset Condenser Microphone with windscreen and cable clip
Dimensions and Weight in Packaging
Band H10 (542-572 MHz)
Shipping Weight: 6.75 lbs
Shipping Dimensions: 19 x 15 x 4 in
Manufacturer Part Number (MPN): BLX14R/SM35-H10
Band H11 (572-596 MHz)
Shipping Weight: 6.5 lbs
Shipping Dimensions: 19 x 15 x 4 in
Manufacturer Part Number (MPN): BLX14R/SM35-H11
Band H9 (512-542 MHz)
Shipping Weight: 6.5 lbs
Shipping Dimensions: 19 x 15 x 4 in
Manufacturer Part Number (MPN): BLX14R/SM35-H9
Warehouse Resealed, Band H9
Shipping Weight: 6.5 lbs
Shipping Dimensions: 19 x 15 x 4 in
Manufacturer Part Number (MPN): BLX14R/SM35-H9
Band J11 (596-616 MHz)
Shipping Weight: 6.5 lbs
Shipping Dimensions: 19 x 15 x 4 in
Manufacturer Part Number (MPN): BLX14R/SM35-J11

Consumer Alert

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC's wireless microphone website at

NOTE: None of the wireless systems we carry are capable of violating the FCC guidelines stated above. We are presenting this information as a matter of legally required disclosure.

For support or warranty questions, please contact the manufacturer:
Phone: 800-516-2525

Band J11 (596-616 MHz)

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