Listen Technologies LP-41-IR-01 Intelligent DSP IR Receiver (12-Pack)The LP 41 IR receiver pack gives you a convenient way to purchase all of the equipment needed to begin offering IR assistive listening or expand your existing system to accommodate more clients and customers. Each pack includes twelve (12) LR 4200 IR iDSP units and one LA 381 Intelligent 12 unit charging tray. Each LR 4200 IR receiver offers industry leading range and sensitivity, providing listeners with a stronger, more reliable signal than any