Alto Professional Stealth Xpander Kit Stealth Wireless Expander Pack | 2 Additional Stealth Wireless Receivers Provides expansion for Stealth Wireless System via (2) single-channel receivers (1) XLR output per receiver Increase loudspeaker coverage using additional receivers No compromise in audio quality; Send audio in high-fidelity stereo or mono (system selectable) Reliable UHF band; 16 selectable channels of long-distance, clean, robust wireless audio capability Adjustable squelch eliminates interference Perfect for multi-room venues, weddings, mobile DJ's, tricky floor monitor placement and mobile A/V