The LISTEN TECH LR-4200-IR : INTELLIGENT DSP IR RECEIVER is for use with the company's infrared assisted listening systems. The unit features two 3.5mm stereo output jacks that can drive two pairs of headphones or a single LA-430 lanyard for T-coil users (both available separately). The result is a convenient listening experience in small-to-medium places where it's difficult to hear - including theaters, boardrooms, classrooms, courtrooms, houses of worship, and more. The receiver has an OLED display that shows unique channel names, battery status, channel status, volume status, and charge activation. The micro-USB connection is used with the free iDSP software suite for set up, programming, inventory management, firmware updates, and charging via any standard USB port. A field-replaceable, lithium-ion battery is included with the unit that powers it for up to 8 hours.
Frequency Channels | 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz |
Audio Output | Two 3.5mm jacks (TRRS), 0 dBu nominal output, 16 mW max |
Frequency Response | 63 Hz – 15 kHz (±3 dB) |
Signal-to-Noise Ratio | 60 dB or greater |
Distortion (THD) | < 2% at 80% deviation |
Display | OLED screen showing battery status, volume, channel info |
Battery Type | Rechargeable lithium-ion |
Charging Method | Micro USB or charging contacts |
Automatic Power Management | Turns on/off when removed/returned to charger |
User Controls | Power on/off, volume up/down |
Programming | Via software and USB port |
Accessories | Integrated neck loop/lanyard, belt clip option |