Ampetronic, in collaboration with Listen Technologies, has introduced the Auri Audio System—a professional assistive listening solution built on Bluetooth Auracast. Designed specifically for public environments, Auri enables high-fidelity wireless audio distribution without the need for complex device pairing. Any Auracast-enabled device—or the dedicated Auri receiver—can seamlessly pick up the broadcast, solving long-standing challenges in coverage and audio clarity across shared spaces.
The system is built around three main components: the TX2N transmitter, RX1 receiver, and D4/D16 docking chargers (which provide centralized charging and device management). Configuration and monitoring are handled through the Auri Manager software, which gives administrators unified control over all devices.
- The TX2N transmitter supports coverage of up to 100 meters and includes balanced mic/line inputs, PoE (Power over Ethernet), IP audio streaming, and optional Dante network audio.
- The RX1 receiver features dual 3.5 mm outputs, an OLED display, and low-latency audio optimized for headphones, earbuds, or hearing aids.
- The docking stations provide simultaneous charging, parameter configuration, and network-based remote management for multiple receivers.
With these capabilities, the Auri system adapts to a wide range of environments—from corporate offices and classrooms to entertainment venues, government facilities, hospitals, transport hubs, and hospitality spaces.
Core Auri Components: RX1 Receiver, TX2N Dual-Channel Transmitter, and Docking Chargers
1. Auri RX1 Audio Receiver
Audio Output
- Two 3.5 mm TRRS connectors supporting both TRS and TRRS headphones, or inductive neck loops.
- Nominal output: 0 dBu; max power: 16 mW; output impedance: 32 Ω.
Audio Performance
- Frequency response (±3 dB):
- 50 Hz–7.5 kHz @ 16 kHz sample rate
- 50 Hz–11 kHz @ 24 kHz
- 50 Hz–19.5 kHz @ 48 kHz
- THD+N: <0.5% @ nominal level
- SNR: >60 dB
- Latency: 29–45 ms depending on sample rate and mono/stereo mode.
Display
- 1.22-inch OLED, 64×128 px, displaying channel info, battery status, signal strength, volume, and charging.
Wireless
- Bluetooth 5.3, Auracast receive-only, 2400–2482 MHz, LC3 codec.
- AES128-CCM encryption with 4–16 digit passcode.
- Supports mono and stereo.
Power
- USB-C charging (5 V / 500 mA) or docking station.
- 3.7 V / 730 mAh lithium-ion battery; up to 20 hours runtime; ~4 h full recharge.
Physical
- 90 × 54 × 23 mm; 70 g.
- Operating range: –10 °C to +40 °C; storage: –40 °C to +70 °C.
- Housing: polycarbonate, black with chrome buttons.
- Certifications: CE, UKCA, RCM, REACH, WEEE.
2. Auri TX2N / TX2N-D Auracast Transmitter
Audio Input
- Dual inputs, switchable between Mic, Line, or Dante (TX2N-D only).
- Mic mode: max –25 dBu, sensitivity –65 dBu, with +24 V phantom power.
- Line mode: max +16 dBu, sensitivity –25 dBu.
- Dante mode: 2-channel, 48 kHz, via RJ45 (100 Mbps).
- Input impedance: 15 kΩ; THD+N: 0.02–0.03%; CMRR: 56 dB.
Audio Output
- 3-pole Euroblock, +1 dBu output, 150 Ω impedance.
Network & Wireless
- Wireless: Bluetooth 5.3, Auracast, LC3 codec, AES128-CCM encryption, +20 dBm (NA) / +10 dBm (other regions).
- Wired: 100 Mbps Ethernet with PoE (IEEE 802.3af), multicast RTP, 16-bit audio, 16/24/48 kHz sample rates, 5 ms nominal latency. AES256-GCM encryption for UDP traffic.
Audio Processing
- Routing: input 1, input 2, stereo pair, or mono sum.
- AGC: ±20 dB; low-cut filter (24 dB/octave).
- Frequency response: up to 50 Hz–22.5 kHz at 48 kHz sampling.
Physical
- 183 × 173 × 48 mm; 0.45–0.47 kg.
- Housing: PC-ABS, white.
- Installation: wall, ceiling, or VESA 75 mount.
- Certifications: FCC, CE, UKCA, RCM, MIC, RoHS, REACH, WEEE.
3. Auri D4 / D16 Docking Chargers
- Purpose: charging, parameter configuration, and network management.
- Capacity: D4 holds up to 4 receivers; D16 up to 16 receivers.
- Network: 100 Mbps Ethernet; DHCP, static IP, link-local addressing. Protocols include mDNS, UDP (unicast), RTP/RTCP (multicast). Encrypted with AES256-GCM.
- Power: 100–240 V AC input; 12 V DC / 4 A output; 48 W total.
- Dimensions:
- D4: 50 × 192 × 150 mm, 0.65 kg.
- D16: 50 × 192 × 375 mm, 1.73 kg.
- Housing: black with chrome buttons; IP20 rated.
- Certifications: CE, UKCA, RCM, REACH, WEEE.
Auri TX2N Transmitter
Auri RX1 Receiver
Auri D4 and D16 Docking Stations
Developed by the Bluetooth SIG, Auracast is part of the new LE Audio standard. Unlike traditional Bluetooth’s one-to-one pairing, Auracast allows a single transmitter to broadcast to many receivers—functionally similar to radio. It uses the LC3 codec for higher quality audio at lower bitrates, with extended range and reduced latency.
Dante (Digital Audio Network Through Ethernet), developed by Audinate, is an IP-based audio networking technology that enables uncompressed, low-latency digital audio over standard Ethernet. Devices appear as nodes on the network, with routing managed via software. TX2N-D models integrate Dante input for seamless wireless broadcasting of Dante audio streams via Auracast.
Software Support and Deployment
System setup and management are handled via the Auri Manager software, which discovers devices on the LAN, configures routing, selects input sources, and sets broadcast parameters (frequency, encryption). It also manages firmware updates, monitors device health (battery status, signal quality), and secures communication with AES256-GCM encryption.
This centralized approach makes Auri suitable for large-scale deployments in stadiums, airports, and transport hubs where performance, security, and scalability are critical.
Ampetronic has not yet disclosed pricing, but demonstration requests can be made through the official product pages for the RX1 Receiver, TX2N Transmitter, and D4/D16 Docking Stations.
