Shure BLX1288UK/SM31-K3E Dual-Channel Wireless System

The Shure BLX1288UK/SM31-K3E is a versatile dual-channel wireless system designed for performers, presenters, and fitness professionals who require both a rugged headset mic and a handheld microphone. This system combines the BLX88 dual-channel receiver with an SM31FH fitness headset (via BLX1 bodypack) and an SM58 handheld transmitter, delivering professional-grade audio and the reliability that Shure is known for.

Operating in the K3E frequency band (606–630 MHz), this UK-specific model ensures compliant wireless performance with up to 100 m (≈300 ft) line-of-sight range. Its flexible configuration makes it ideal for group classes, events, and stage applications where hands-free and handheld mics are needed together.

System Components

• Receiver (BLX88): Dual-channel tabletop unit with internal antenna diversity and QuickScan frequency selection
• Headset (SM31FH): Durable, moisture-resistant headset mic designed for fitness instruction and active use, paired with BLX1 bodypack transmitter
• Handheld (SM58): BLX2 transmitter with legendary SM58 dynamic capsule—industry standard for live vocals
• Accessories: Mic clips, windscreens, AA batteries, power supply, and mounting adapters

Performance & Utility

• Wireless Range: Up to 100 m / 300 ft line-of-sight under typical conditions
• Battery Life: ~14 hours per transmitter using 2 × AA batteries
• Expandability: Supports up to 12 compatible systems per frequency band (region dependent)
• Setup: QuickScan for automatic, interference-free frequency selection

Technical Specifications

Specification	Details
System Type	Dual-channel wireless with headset & handheld
Frequency Band	K3E (606–630 MHz, UK)
Range	Up to ~100 m (300 ft) line-of-sight
Battery Life	Approx. 14 hours (2 × AA per transmitter)
Outputs	XLR (balanced) & ¼″ jack (unbalanced/line-level)
Microphones	SM31FH fitness headset (with BLX1) + SM58 handheld (with BLX2)

Why Choose the BLX1288UK/SM31-K3E?

• Dual Flexibility: Combines hands-free headset and handheld mic options in one system
• Fitness Ready: SM31FH is sweat-resistant and designed for active environments
• Legendary Sound: SM58 capsule delivers clear, reliable vocal tone
• Reliable Coverage: Up to 100 m wireless performance with diversity reception
• All-Day Operation: Long 14-hour battery life per transmitter

Versatile Dual-Mic Wireless Solution

The Shure BLX1288UK/SM31-K3E is perfect for instructors, performers, and event organizers who need the flexibility of both a headset and handheld microphone. Built with Shure’s wireless reliability, it’s a go-to system for professional audio in active and live environments.