LR-4200-IR ListenIR IR Intelligent DSP ReceiverThe LR 4200 IR receiver is one of Listen Technologies new generation of personal listening products, iDSP or Intelligent Digital Signal Processing. The LR 4200 IR is a high performance IR receiver with extreme sensitivity providing the best pickup and range of any device of its kind. iDSP is the smallest device of its kind, making it easy for the end user to wear and operate and easier for the venues to dispense, store and maintain. The integrated