The SLXD4D Dual Receiver is the convenient, streamlining choice for confident speech presentation and vocal performance from lecture halls to live entertainment.SLX-D Digital Wireless delivers transparent, 24-bit digital audio and rock solid RF performance with easy setup and rechargeability options in a suite of versatile wireless system configurations. Featuring industry-leading digital wireless technology and design in a convenient dual, full-rack configuration, the SLXD4D saves space and accessories for any size of multi-system configuration A variety of interchangeable microphone choices guarantees the right solution for a wide range of applications, from day-long presentations to nighttime performances.