Includes 2 Additional Stealth Wireless Receivers. The easy-to-use Stealth Wireless system from Alto Professional replaces hundreds of feet of audio cable with a reliable wireless connection. Grow your Stealth Wireless system with the handy Expander Pack, containing two additional single channel receivers. Includes single-channel receivers (x2) with one XLR output (per unit). Features of Stealth Wireless include:; Add wireless audio connectivity to any active loudspeaker; Enjoy faster setups and teardowns; Eliminate complex cable runs;�Dual-channel transmitter (x1) with two XLR+1/4;�Single-channel receivers (x2) with one XLR output (per unit);�Replaces up to 200' of console-to-system cabling;�No compromise in audio quality;�Reliable UHF band; 16 selectable channels;�Adjustable squelch eliminates interference;�Grow your system using the Stealth Expander Pack (sold separately);�Transmitter: (2) XLR+1/4 combo inputs;�Receiver: (1) XLR output (per receiver)