Ampetronic, in partnership with Listen Technologies, has introduced Auri, a Bluetooth Auracast-powered audio system/assistive listening solution designed for public spaces. It is designed to deliver clear, wireless audio to any Auracast-enabled device or dedicated Auri receiver without the need for pairing.
The Auri system consists of the TX2N transmitter, RX1 receiver, and D4/D16 docking stations, managed through Auri Manager software. The TX2N features a 100 m coverage with balanced mic/line inputs, PoE, Audio over IP, and optional Dante support. The RX1 receiver features dual 3.5 mm jacks, an OLED display, and low-latency audio output for earbuds, headphones, or hearing aids. Docking stations become useful for charging, configuration, and network-based management for multiple receivers. These features make this system suitable for corporate, education, entertainment, government, healthcare, transport, and hospitality environments.
Auri Auracast system specifications:
- Auri RX1 audio receiver
- Audio Output
- 2x 3.5mm TRRS jacks for wired headphones or inductive neck loops
- Supports TRS or TRRS headphones
- Nominal output level – 0 dBu, 16 mW max
- 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 sample rate
- 50 Hz – 19.5 kHz @ 48 kHz sample rate
- THD+N (system) – < 0.5% @ nominal level
- Signal-to-noise ratio – > 60 dB
- Latency – 29 – 45 ms (depending on sample rate and stereo/mono mode)
- Frequency response (±3 dB):
- Display
- 1.22″ OLED (64 × 128 pixels, 31 × 16 mm)
- Shows channel, battery level/time remaining, signal strength, volume, and charging status
- Wireless
- Bluetooth 5.3, Auracast compliant (receive only)
- Frequency range – 2400 – 2482 MHz
- Codec – LC3
- Encryption – AES128-CCM (4–16 character password)
- Supported formats – Mono or Stereo
- USB – 1x USB Type-C port for charging (5 V, 500 mA)
- Misc
- Power On/Off, Volume Up/Down, Display On/Off, Channel Selection, 2× Multifunction soft buttons
- Light sensor for automatic brightness adjustment
- RGB status LED (multi-function)
- Jack sense
- Power
- USB-C (5 V, 500 mA) or docking station (magnetic contacts)
- 3.7 V / 730 mAh Li-Po rechargeable battery with 20 hours of battery life
- 4 hours of charging time from 0% to 100%
- Auto Off (0–30 min), Auto Power
- Dimensions (H × W × D, with clip) – 90 × 54 × 23 mm
- Operating temperature – −10 °C to +40 °C
- Storage temperature – −40 °C to +70 °C
- Humidity – 0–95% RH (non-condensing)
- Weight – 70 g (0.15 lbs)
- Enclosure – PC plastic (IR-transparent), black with chrome buttons
- IP rating – IP40
- Compliance – CE, UKCA, RCM, REACH, WEEE
- Audio Output
- Auri TX2N/TX2N-D auracast transmitter
- Audio inputs
- 2x audio inputs selectable between Mic, Line, or optional Dante:
- Mic
- Max input level: –25 dBu
- Sensitivity: –65 dBu
- Switchable +24V phantom power
- Line
- Max input level: +16 dBu
- Sensitivity: –25 dBu
- Dante (optional, TX2N-D)
- Connection: RJ45, 100 Mbit
- Channels: 2
- Sample rate: 48 kHz
- Mic
- Mic/Line connection – 2x 3-way 3.5mm pitch Euroblock
- Input impedance – 15 kΩ
- THD+N – 0.03% (line), 0.02% (mic)
- Common mode rejection – 56 dB
- 2x audio inputs selectable between Mic, Line, or optional Dante:
- Audio output – 3-way 2.5mm pitch Euroblock connector with +1 dBu output level, 150 Ω impedance
- USB – USB Type-C port for power
- Audio transmission over network
- Wireless
- Bluetooth 5.3 Auracast
- Frequency range – 2400–2482 MHz
- Codec – LC3
- Max TX power – +20 dBm (NA), +10 dBm (RoW)
- Encryption – AES128-CCM, password 4–16 chars
- Formats – Mono or Stereo
- Wired – 100 Mbps Ethernet RJ45 port with PoE support
- Audio Channels – 2x stereo input, 2x stereo output
- Format – Multicast RTP, 16-bit audio at 16 / 24 / 48 kHz sample rates
- Bandwidth – 0.5 – 1.5 Mbit/s per stereo stream
- Latency – ~5 ms nominal; internal 13 ms; end-to-end 29 – 45 ms (with Auri RX1)
- Protocols – DHCP / Static IP, mDNS, UDP, RTP / RTCP
- Security – AES256-GCM encryption for UDP communication
- Wireless
- Audio Processing
- Routing options – Input 1, Input 2, Stereo Pair, or Mono Sum
- AGC –Switchable, 20 dB range
- Low-cut filter – 24 dB/oct, cutoff varies by sample rate
- Frequency response
- 16 kHz: 50 Hz–7.5 kHz
- 24 kHz: 50 Hz–11.0 kHz
- 48 kHz: 50 Hz–22.5 kHz
- Internal latency (line in/out) – 13 ms
- End-to-end latency (with Auri RX1) – 29–45 ms
- Misc
- Recessed restart and factory reset buttons
- RGB multi-function status LED
- Power
- Suports IEEE 802.3af PoE
- 5V power from USB Type-C port
- Consumption
- 5V, 370mA from USB-C port (1.85 W)
- 48V, 53 mA from PoE (2.54 W)
- Dimensions – 183 × 173 × 48 mm
- Operating temperature – –10°C to +40°C
- Storage temperature – –40°C to +70°C
- Humidity – 0–95% non-condensing
- Weight – 0.45 kg (TX2N) / 0.47 kg (TX2N-D)
- Enclosure – PC-ABS, white
- Mounting – Wall/ceiling bracket, supports UK/EU/US boxes, VESA 75
- IP rating – IP30
- Certifications – FCC, ISED, CE, UKCA, RCM, MIC, RoHS, REACH, WEEE compliant
- Audio inputs
- Auri-D4 / Auri-D16 docking station
- Purpose – Docking and charging stations for Auri receivers
- Available models
- Auri-D4 – Holds up to 4 receivers
- Auri-D16 – Holds up to 16 receivers
- Network:
- Port speed: 100 Mbit/s
- IP configuration: DHCP, static, or link-local
- Protocols: mDNS, UDP (unicast), RTP/RTCP (multicast)
- Security: AES256-GCM encryption (UDP communication)
- Misc
- Copy and Status buttons,
- Recessed restart and factory reset buttons
- LEDs – Copy (red) and Status (amber)
- Power
- Input – 100–240 VAC, 50–60 Hz
- Output – 12 VDC / 4.0 A (48 W)
- Connector – 5.5 mm OD × 2.3 mm ID barrel type
- Cable – 1.8 m input, 1.1 m output
- Includes LA-210 power supply
- Dimensions
- Auri-D4 – 50 × 192 × 150 mm, 0.65 kg
- Auri-D16 – 50 × 192 × 375 mm, 1.73 kg
- Operating temperature – –10°C to +40°C
- Storage temperature – –40°C to +70°C
- Relative humidity – 0–95%, non-condensing
- Weight – 1.56 kg (D4) / 2.79 kg (D16)
- Color – Black with chrome buttons
- Mounting – Desktop use or wall mounting slots
- IP rating – IP20
- Certifications – CE, UKCA, RCM, REACH, WEEE
Developed by the Bluetooth SIG, Auracast is a new Bluetooth LE Audio technology that enables audio systems with one transmitter to broadcast audio to multiple receivers simultaneously. Compared to the old Bluetooth technology, which connects one-to-one, Auracast allows nearby devices to “tune in” to a broadcast using compatible devices such as hearing aids, earbuds, or smartphones, just like what a radio would do. It utilizes the LC3 codec to deliver higher-quality sound at lower bitrates, supporting lower latency and a wider range than classic Bluetooth. Essentially, Auracast turns Bluetooth into a shared audio platform for assistive listening and multi-user applications.
Dante, short for Digital Audio Network Through Ethernet, is an audio-over-IP technology developed by Audinate. It transmits uncompressed, low-latency digital audio over standard Ethernet networks, eliminating the need for traditional analog cabling. Each Dante-enabled device connects like a node on the network, and audio routing is managed via software, allowing flexible signal distribution without physical rewiring. Dante supports high-resolution audio (up to 24-bit/192 kHz) and uses IEEE 1588 Precision Time Protocol for sample-accurate synchronization. In the Auri system, the TX2N-D transmitter features an optional Dante input, enabling audio from a Dante network, such as a mixer or DSP, to be transmitted wirelessly over Auracast.
In terms of software support, the Auri Auracast audio system is managed and configured through the Auri Manager Software, which provides network-based setup, device discovery, and firmware management for all Auri transmitters, receivers, and docking stations. It supports configuration of audio routing, input source selection, and broadcast parameters over standard Ethernet using mDNS, UDP, RTP, and RTCP protocols. The software also supports device status monitoring, firmware updates, and secure communication using AES256-GCM encryption, ensuring consistent performance and compliance across large-scale Auracast deployments.
Detailed information about the AURI-RX1 auri receiver, the Auri-TX2N 2-channel transmitter, and the Auri-D4/Auri-D16 docking station can be found on their respective product pages. At the time of writing, the company has not disclosed any pricing information, but you can book a demo from their respective product pages.
Debashis Das is a technical content writer and embedded engineer with over five years of experience in the industry. With expertise in Embedded C, PCB Design, and SEO optimization, he effectively blends difficult technical topics with clear communication
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