Listen LR-4200-072 Intelligent DSP RF Receiver 72MHz Rechargeable OLED

Overview

The Listen LR‑4200‑072 is an intelligent, compact DSP RF receiver operating in the 72 MHz band—ideal for assistive listening, conferences, education, and events. It delivers superior audio clarity with 20 dB less noise than other RF units, thanks to Listen’s advanced DSP SQ™ noise-reduction technology. A built-in neck-loop/lanyard supports T-coil hearing aids, while dual 3.5 mm outputs enable shared listening. Its sleek black housing, integrated OLED display, micro‑USB port for firmware updates, and rechargeable lithium-ion battery make it a top choice for modern venues.

Features:

• Intelligent DSP SQ™ noise reduction – Reduces hiss by approximately 20 dB for clearer audio.
• Compact and lightweight – Weighs only ~1.6 oz (45 g), with included neck-loop/lanyard and optional belt clip.
• OLED display – Shows battery life, channel ID, volume level, and charge status.
• Dual 3.5 mm audio outputs – Support headphone or neck-loop listening; perfect for shared sessions.
• Micro‑USB port – Enables charging, programming, inventory tracking, and firmware updates via iDSP software.
• Built-in rechargeable lithium-ion battery – Provides up to 8 hours of continuous use; full charge in ~2.5 hours.

Specifications:

• RF Band: 72.025 – 75.950 MHz
• Channels: Supports multiple wide/narrow-band channels; tuning locked by admin
• Audio Response: 50 Hz–15 kHz ±3 dB; SNR ≥80 dB (SQ on)
• Audio Outputs: 2× unbalanced 3.5 mm jacks, 0 dBu nominal, 16 mW max, 32 Ω impedance
• Battery: 1200 mAh Li-ion; ~8 h continuous use; charges via micro‑USB (5 V/500 mA), ~2.5 h full charge
• Display & Controls: OLED display; power button, volume up/down, channel setup
• Dimensions: Approx. 3.75″ × 2.00″ × 0.64″ (~95 × 50 × 16 mm)
• Weight: ~1.6 oz (45 g)
• Compliance: FCC Part 15/90, Industry Canada, RoHS

Ideal For:

• Assistive listening systems in theaters, auditoriums, houses of worship, and educational settings.
• Events and conferences requiring discreet receiver distribution with reliable range and clarity.
• Hearing-aid users, thanks to integrated neck-loop and T-coil support.
• Venues needing easy management with USB connectivity for programming and firmware updates.

Included Accessories:

• LR‑4200‑072 receiver with integrated neck-loop/lanyard
• Field-replaceable lithium-ion battery
• Quick-start guide

High-performance RF receiver offering best-in-class sensitivity and 20dB less noise than other devicesSmallest device of its kind makes it easier to wear and use and for venues to dispense, store and maintain OLED display showing channels, battery status, channel status, volume level, and moreIntegrated neck loop/lanyard with DSP loop driver for an enhanced T-coil listening experience. Lanyard and belt clip options offer convenient and discreet choices for the end user.

Unique DSP SQnoise reduction technology. Designed for single-channel applications, is capable of receiving on 57 wide and narrow band channels. The device has a USB connector used for inventory control, set up, charging and firmware upgrades.

Advanced rechargeable battery technology eliminates the costs and hassles associated with frequent battery replacement. Includes and a non-proprietary field replaceableÊLithium-ion battery. The device has additional charging contacts to allow multiple charging options.ÊComes with a quick start guide and Limited lifetime warranty with hassle-free support