Behringer BT251 BK Bluetooth Adapter for MMCX Headphones

The Behringer BT251 BK is a studio–grade Bluetooth adapter designed for in–ear monitoring rigs across live and studio settings. Built to retrofit MMCX–equipped earphones and headphones, it bridges the gap between wired IEM workflows and wireless convenience without requiring an overhaul of existing gear. The 360–degree rotating gold–plated MMCX lock–snap connectors offer both mechanical durability and the flexibility needed in touring scenarios where gear takes a beating.

At its core sits advanced DSP circuitry engineered to maintain transparent audio reproduction across a wide dynamic range, regardless of source device. The MMCX connectors employ gold plating for reliable contact resistance and durability under repeated mating cycles—critical for environments where the adapter transitions between multiple earphones or sees frequent stage use. Compatibility extends to most professional and consumer MMCX headphone models, making it a practical retrofit choice rather than requiring equipment replacement. The wireless implementation preserves signal integrity whilst eliminating cable microphonics that plague traditional wired IEM setups during movement.

Features

• Professional studio–grade Bluetooth wireless adapter engineered for in–ear monitors
• Compatible with MMCX connector earphones and headphones across most manufacturers
• 360–degree rotating gold–plated MMCX lock–snap connector design
• Advanced DSP optimises audio clarity across wide dynamic range
• Gold–plated connectors resist corrosion and wear from repeated use
• Eliminates cable microphonics during live performance or studio movement
• Retrofit solution for existing MMCX earphone investments
• Transparent sound reproduction from multiple audio source devices