Shure SLXD4Q+ Quad 4-Channel In One Rack Space Receiver ( G57: 460 to 608 MHz )
Shure SLXD4Q+ Quad 4-Channel In One Rack Space Digital Wireless Receiver (G57: 460 to 608 MHz). The SLXD4Q+ Quad Channel Receiver is the best choice for streamlining SLX-D digital wireless performance into a space-saving footprint.