Introduction
The Highgaze BA-55T Bluetooth 5.4 transmitter is designed to broadcast audio from a single source to multiple devices simultaneously. It supports both Bluetooth Classic/LE Audio modes and Auracast for versatile audio sharing in various environments such as airports, hotels, museums, or churches, providing real-time translation with minimal delay.
Key Features:
- Dual-mode operation with LE Audio and Auracast, compatible with certain smartphones.
- Simple pairing: double-click for Bluetooth Classic/LE Audio mode, triple-click for Auracast mode.
- Real-time audio synchronization with aptX classic/LL/HD/adaptive codecs.
- Flexible connectivity via 3.5mm TRS port and USB audio input.
- Up to 8 hours of total playtime.
Product Overview and Package Contents

Image: The Highgaze BA-55T Bluetooth Audio Transmitter, showcasing its compact design and the included 3.5mm audio cable and USB charging cable.
The package includes the Highgaze BA-55T transmitter unit, a 3.5mm TRS audio cable for line-in connections, and a USB cable for charging and USB audio input.
Modes and Technical Specifications

Image: A visual representation of the two primary operating modes (1-to-1 and 1-to-N Auracast) and a table detailing the device's specifications and button functions.
Operating Modes:
- 1-to-1 Classic/LE Audio Mode: Transmits audio from a single source to one receiving device (e.g., headphones, earbuds, speaker).
- 1-to-N Auracast Mode: Broadcasts audio from a single source to an unlimited number of Auracast-enabled receiving devices simultaneously.
Specifications:
| Connectivity Switch | 3.5mm TRS port, Charge & USB Audio port |
| Dimensions | 59 mm x 29 mm x 21 mm |
| Weight | 16g |
| Battery | Up to 2 hours per charge, Up to 8 hours of total playtime |
| Audio Codec | aptX Adaptive, aptX HD, aptX, SBC, LC3 |
Button Functions:
- Center Button: Auracast & Bluetooth pairing.
- '+' Button: Volume Up.
- '-' Button: Volume Down.
Setup and Operation
Video: A step-by-step guide on how to set up and use the Highgaze BA-55T Bluetooth Audio Transmitter, including connecting to an audio source and initiating an Auracast broadcast.
Step 1: Connect Audio Source
Plug the 3.5mm audio cable into the LINE IN port of the BA-55T transmitter. Connect the other end of the 3.5mm cable to your audio source (e.g., laptop, MP3 player, TV).
Step 2: Power On and Select Input
Power on the BA-55T. Ensure the input switch on the side is set to 'LINE IN' for 3.5mm audio or 'USB IN' if using USB audio.
Step 3: Prepare Receiving Device for Auracast
On your Auracast-compatible smartphone or receiving device, go to Bluetooth settings. Connect your earbuds or headphones. Access the settings for your connected audio device and ensure 'LE Audio' is enabled to enhance sound quality and performance.
Step 4: Initiate Auracast Broadcast
Triple-click the center button on the BA-55T transmitter to activate Auracast broadcast mode. On your receiving device, select 'Listen to Auracast broadcast' and choose the broadcast from the available list (e.g., 'Broadcast1104').
Frequently Asked Questions (FAQ)

Image: A list of frequently asked questions and their answers regarding the Highgaze BA-55T and Auracast functionality.
Q1. What is this Transmitter for?
A. The HIGHGAZE Audio Transmitter is designed to broadcast audio from a single source to an unlimited number of receiving devices without the need for traditional one-to-one Bluetooth pairing. It functions similarly to a radio broadcast, allowing any Auracast™ enabled device within range to pick up the audio.
Q2. What are the differences between LE Auracast™ and non-LE Auracast™ mode?
A. LE Auracast™: Allows a single audio source to broadcast to an unlimited number of Bluetooth LE Audio receivers.
Non-LE Auracast™: Transmits audio from a single source to only one Bluetooth receiver.
Q3. Which devices will support Auracast™?
A. Devices require Bluetooth LE Audio capability to support Auracast™. Latest Android devices (excluding iPhones), wireless headphones, hearing aids, and audio systems are gradually incorporating Auracast™ support. HIGHGAZE has tested compatibility with Samsung Galaxy S23/S24/S25 (One UI version 6.1 or higher) and headphones such as Samsung Buds2 Pro and EarFun Air Pro4.
Important Safety Information
- Avoid using this device near other wireless devices to prevent interference.
- Do not dispose of the battery in regular trash; follow local regulations for recycling lithium-ion batteries.
- Keep the device away from extreme temperatures and humidity.
Troubleshooting
If you encounter issues with your Highgaze BA-55T transmitter, please consider the following:
- No Audio Output: Ensure the 3.5mm cable is securely connected to both the transmitter and the audio source. Verify the input switch on the transmitter is set correctly (LINE IN or USB IN). Check the volume levels on both the transmitter and your receiving device.
- Pairing Issues: For Bluetooth Classic/LE Audio mode, ensure your receiving device is in pairing mode and double-click the center button on the BA-55T. For Auracast, ensure your receiving device supports LE Audio and Auracast, and triple-click the center button on the BA-55T to broadcast.
- Interference: Move the transmitter and receiving devices away from other wireless electronics that might cause signal interference.
- Battery Life: If the device is not holding a charge, ensure it is properly connected to a power source using the provided USB cable.
Customer Support
For immediate technical support or any inquiries regarding your Highgaze BA-55T, please contact us via email: