Alto STEALTH EXPANDER PACK Additional Stealth Wireless Receiver (Pack of 2)The 2 pack of Additional Stealth Wireless Receivers from Alto are designed for use with the Stealth Wireless system. These single channel receivers replace hundreds of feet of audio cable with a reliable wireless connection. Using this pack, you can add additional active loudspeakers (sold separately) to your array to create a larger system, or to provide multi room coverage. Single channel receivers (x2) with 1 XLR output (per unit) Active