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Shure

Shure BLX4R=-J11 Wireless Rackmount Receiver J11 Band

★★★★★4.6 (186 reviews)

Rack-mountable wireless receiver with QuickScan frequency selection and dual XLR/1/4-inch outputs for Shure BLX systems.

$263.00*
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*Price sourced from Amazon.com. Last updated:Jun 28, 2026.Price and availability are subject to change.

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Overview

The Shure BLX4R is a single-channel wireless receiver built for integration into rack-mounted audio systems. Designed as a component of Shure's BLX wireless platform, it pairs with BLX1 bodypack or BLX2 handheld transmitters operating on the J11 frequency band, providing reliable wireless audio for small venues, houses of worship, corporate presentations, and similar environments. The receiver features QuickScan technology that automatically identifies the cleanest available frequency, making setup fast even in RF-congested spaces. With an operating range of up to 300 feet, it gives performers and presenters freedom to move without worrying about signal dropout.

On the connectivity side, the BLX4R provides both XLR and 1/4-inch outputs so it can feed directly into mixing consoles, powered speakers, or recording interfaces. The unit ships with rack mount hardware for standard 19-inch racks, a power supply, and a user guide, along with Shure's two-year warranty. For larger productions, up to 12 channels can operate simultaneously within the same frequency band, allowing the system to scale with your needs. The user-friendly front panel makes it easy to monitor signal status and adjust settings without diving into complex menus.

Key Features

J11 (596–620 MHz) UHF FREQUENCY BAND: Operates on the J11 (596–620 MHz) UHF frequency band for dependable wireless audio transmission in regions where this spectrum is authorized. Verify local compliance before ordering.

EXTENDED WIRELESS RANGE: Provides dependable audio reception up to 300 ft (91 m) line-of-sight under typical conditions, helping maintain stable wireless performance for stage events and presentations.

BLX SYSTEM RECEIVER ONLY: Includes BLX4R rack-mount receiver, antennas, rack hardware, and power supply. Compatible with BLX1 bodypack and BLX2 handheld transmitters. Transmitters and microphones are sold separately.

QUICKSCAN FREQUENCY SELECTION: One-touch QuickScan frequency selection automatically finds the best available RF channel to help reduce interference during setup.

PROFESSIONAL RACKMOUNT CONNECTIVITY: Features XLR and 1/4-inch outputs, adjustable output level, LCD display, and LED audio indicators, built with Shure UHF design for reliable performance.

Specifications

Type
Single-Channel Wireless Receiver
Frequency Band
J11
Mounting
Rack Mountable (hardware included)
Outputs
XLR and 1/4-inch
Operating Range
Up to 300 ft (100 m)
Frequency Selection
QuickScan
Max Simultaneous Channels
12 per frequency band
Compatible Transmitters
Shure BLX1, BLX2 (J11 band, sold separately)
Transmitter Battery Life
Up to 14 hours (2x AA)
Included Accessories
Rack mount hardware, power supply, user guide
Warranty
2 years

Pros & Cons

👍 Pros

  • Rack-mountable design keeps installations clean and organized in permanent setups.
  • QuickScan frequency selection eliminates manual frequency hunting during setup.
  • Dual XLR and 1/4-inch outputs provide flexible connectivity to different audio equipment.
  • Supports up to 12 simultaneous channels per band for multi-performer environments.
  • Includes rack mount hardware, power supply, and a two-year Shure warranty in the box.

👎 Cons

  • Receiver only — requires a separate BLX series transmitter purchase to function.
  • Single-channel design means you need one unit per wireless source, increasing rack space for larger setups.
  • Must verify that the J11 frequency band is approved for use in your specific geographic area before purchasing.
  • Limited to the BLX system ecosystem and not compatible with higher-tier Shure wireless lines.

Frequently Asked Questions

No. The BLX4R is a receiver-only component. You need a compatible Shure BLX series transmitter (BLX1 bodypack or BLX2 handheld) in the matching J11 frequency band, sold separately.
You can run up to 12 compatible channels per frequency band, making it suitable for multi-performer setups in small to mid-sized venues.
The receiver offers both XLR and 1/4-inch output connections, giving you flexibility to connect to mixing consoles, powered speakers, or other audio equipment.
Yes. The BLX4R is a single-channel rack-mountable receiver that includes rack mount hardware in the box for standard 19-inch equipment racks.
QuickScan automatically finds and assigns the best available frequency in your area, simplifying setup and helping avoid interference from other wireless devices.

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