Introduction
The Golvery USB Bluetooth 5.0 Audio Transmitter Adapter (Model B25) is designed to provide high-quality wireless audio transmission from various devices such as PCs, PS4 consoles, Mac computers, TVs, and Nintendo Switch systems to Bluetooth headphones or speakers. This adapter supports Bluetooth 5.0 for stable connections and can pair with up to two headphones simultaneously, aiming to minimize lip-sync delay for an enhanced audio experience. It is specifically an audio adapter, not a general-purpose Bluetooth data dongle.
Package Contents
- Golvery USB Bluetooth 5.0 Audio Transmitter Adapter (Model B25)
- External Antenna
- User Manual (this document)
- 3.5mm Audio Cable (for TV/Aux connections)
Product Overview

Figure 1: Golvery USB Bluetooth 5.0 Audio Transmitter Adapter with its external antenna attached.
The adapter features a USB-A connector for power and data, an external antenna port for improved range, and a multi-function button for pairing. A blue LED indicator shows the device's status.
Setup Guide
1. Connecting the Adapter
Before use, ensure the external antenna is securely screwed into the adapter's antenna port.
For PC/Laptop:

Figure 2: The Golvery adapter connected to a laptop, demonstrating its plug-and-play functionality for PC/Laptop use.
Plug the Golvery adapter directly into an available USB port on your PC or laptop. The device is designed for plug-and-play operation, meaning no specific drivers are typically required for basic audio functionality on Windows 10 or macOS. Once connected, your computer will recognize it as a USB audio device.
For PS4 / Nintendo Switch:

Figure 3: The Golvery adapter connected to a PS4 console and a Nintendo Switch dock, illustrating its use for wireless gaming audio.
Plug the adapter into an available USB port on your PS4 console or Nintendo Switch dock. For voice chat functionality on these platforms, a separate 3.5mm microphone is required and must be purchased separately. The adapter primarily handles audio output.
For TV with 3.5mm AUX Out:

Figure 4: Setup diagram for connecting the Golvery adapter to a TV using both USB for power and a 3.5mm AUX cable for audio input.
Connect the adapter to a USB port on your TV for power. Then, use the provided 3.5mm audio cable to connect the TV's 3.5mm AUX output to the adapter's 3.5mm input port. This configuration allows the adapter to receive audio from your TV and transmit it wirelessly to Bluetooth headphones or speakers.
2. Pairing with Bluetooth Devices
Once the adapter is powered on and connected to your source device:
- Put your Bluetooth headphones or speakers into pairing mode. Refer to your audio device's manual for specific instructions on how to enter pairing mode.
- On the Golvery adapter, press and hold the main button (Multi-Function Button) until the LED indicator starts flashing rapidly, indicating it is in pairing mode.
- Place your Bluetooth audio device close to the Golvery adapter. They should automatically connect within a few seconds. The LED indicator on the adapter will change to a solid blue light once successfully paired.
- To pair a second set of headphones/speakers, repeat steps 1-3. The adapter can connect to two Bluetooth audio devices simultaneously.

Figure 5: The Golvery adapter is designed to pair exclusively with Bluetooth headphones or speakers for audio transmission.
Important Note: This adapter is designed exclusively for transmitting audio to Bluetooth headphones or speakers. It is not a general-purpose Bluetooth dongle for connecting other Bluetooth devices like keyboards, mice, or game controllers. It functions as a USB audio adapter that uses Bluetooth for its output.
Operating Instructions
Audio Playback
Once paired, audio from your connected source device (PC, PS4, Switch, TV) will be transmitted wirelessly to your Bluetooth headphones or speakers. Ensure the Golvery adapter is selected as the default audio output device in your system settings (e.g., Sound settings on PC).
Voice Chat (for PS4/Switch)
For voice chat functionality on PS4 or Nintendo Switch, a separate 3.5mm microphone is required. Connect the microphone to the appropriate port on your console/device, and ensure it is configured as the input device in your system's audio settings.
Understanding the Adapter's Function

Figure 6: A comparison highlighting the differences in design and functionality between the Golvery B25 audio transmitter and a typical USB Bluetooth data dongle.
The Golvery B25 is optimized for high-quality audio transmission with low latency (especially with aptX LL supported headphones). Unlike standard Bluetooth dongles that handle both audio and data, the B25 focuses solely on audio, providing a more dedicated and often superior audio experience. It typically does not require driver installation and operates as a "plug and play" audio device.

Figure 7: Performance comparison between Bluetooth 4.1 and Bluetooth 5.0, illustrating the improvements in transmission speed, efficiency, range, and data capacity offered by Bluetooth 5.0.
Leveraging Bluetooth 5.0 technology, the B25 offers enhanced transmission efficiency, greater connection distance, and increased capacity compared to older Bluetooth versions, contributing to a more robust and reliable wireless audio link.
Maintenance
To ensure the longevity and optimal performance of your Golvery USB Bluetooth 5.0 Audio Transmitter Adapter:
- Keep the device clean by wiping it with a soft, dry cloth. Avoid using liquid cleaners or solvents.
- Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid dropping the device or subjecting it to strong impacts.
- Ensure the external antenna is not bent or damaged, as this can affect signal range.
Troubleshooting
| Problem | Possible Cause / Solution |
|---|---|
| No sound or intermittent audio. |
|
| Cannot pair Bluetooth headphones/speakers. |
|
| Audio delay (lip-sync issues). |
|
| Adapter not recognized by PC/console. |
|
Specifications
| Feature | Detail |
|---|---|
| Product Model | B25 |
| Bluetooth Version | Bluetooth 5.0 |
| Dimensions | 3.94 x 1.97 x 0.79 inches |
| Item Weight | 2.39 ounces |
| Manufacturer | JTKJ |
| First Available Date | May 23, 2019 |
| Connectivity | USB-A, 3.5mm AUX In |
| Supported Devices | PC, PS4, Mac, TV (with 3.5mm AUX out), Nintendo Switch |
| Audio Codec Support | CD-Like (aptX Codec), aptX LL for low latency (with compatible headphones) |
| Simultaneous Connections | Supports pairing with 2 headphones/speakers simultaneously |
Warranty and Support
Information regarding specific warranty terms and customer support contact details for the Golvery USB Bluetooth 5.0 Audio Transmitter Adapter is not available in the provided product data. Please refer to the product packaging or the manufacturer's official website for the most current warranty and support information.
For further assistance, you may visit the Golvery Store on Amazon.