Introduction
The 1Mii B03Pro is a versatile Bluetooth 5.3 audio adapter designed to enhance your home audio experience. It functions as both a transmitter and a receiver, allowing you to wirelessly stream audio from your TV or stereo system to Bluetooth headphones/speakers, or from your smartphone/tablet to your wired home stereo. Featuring an audiophile-grade SABRE DAC and support for aptX HD/Low Latency codecs, the B03Pro delivers high-fidelity sound with minimal delay and extended range.
Key Features
- Bluetooth 5.3: Utilizes the latest Bluetooth technology for stable and efficient wireless connections.
- Audiophile-G rade DAC: Built-in SABRE DAC ensures superior resolution and detail with a 121dB signal-to-noise ratio.
- aptX HD & Low Latency Support: Provides high-definition audio and minimizes audio delay for synchronized viewing and listening.
- Extended Long Range: Achieves up to 265ft (80m) line-of-sight outdoors and 80-110ft (25-35m) indoors, thanks to Class 1 Bluetooth and dual antennas.
- Dual Stream: Connects to two Bluetooth headphones or speakers simultaneously for shared listening.
- Multiple Audio Inputs/Outputs: Supports Optical, AUX (3.5mm), and RCA audio connections for broad compatibility.
- Easy Operation: Simple plug-and-play setup with intuitive controls.
Package Contents
Please check the box for the following items:
- 1Mii B03Pro Bluetooth Transmitter Receiver Unit
- USB Power Adapter and USB Power Cable
- 3.5mm AUX Audio Cable
- RCA to 3.5mm AUX Audio Cable
- Optical Audio Cable
- User Manual (this document)
Figure 1: Included accessories and the 1Mii B03Pro unit.
Setup and Connection
1. Product Overview
Figure 2: Front view of the 1Mii B03Pro unit.
Figure 3: Rear view of the 1Mii B03Pro showing various audio input and output ports.
2. Connecting the Power
Connect the provided USB power cable to the "DC IN" port on the back of the B03Pro unit and plug the USB power adapter into a standard wall outlet. The unit will power on automatically.
3. Choosing a Mode (TX/RX/Bypass)
The 1Mii B03Pro features a slide switch on the top panel to select between Transmitter (TX), Receiver (RX), and Bypass modes.
- TX (Transmitter) Mode: Used to send audio wirelessly from a non-Bluetooth device (e.g., TV, PC) to Bluetooth headphones or speakers.
- RX (Receiver) Mode: Used to receive audio wirelessly from a Bluetooth device (e.g., smartphone, tablet) and play it through a wired stereo system or speakers.
- Bypass Mode: Allows audio to pass through the B03Pro without Bluetooth processing. Useful when you want to use your TV's built-in speakers or a soundbar directly, without disconnecting the B03Pro.
4. Connection Examples
Transmitter (TX) Mode Setup
In TX mode, the B03Pro transmits audio from your TV or other audio source to Bluetooth headphones or speakers.
Figure 4: Overview of connection modes for the 1Mii B03Pro.
To connect your TV to the B03Pro in TX mode:
- Select an output interface on your TV (Optical, AUX, or RCA).
- Connect the corresponding audio cable (Optical, 3.5mm AUX, or RCA to 3.5mm AUX) from your TV's audio output to the B03Pro's "Optical In" or "3.5mm In" port.
- Slide the mode switch on the B03Pro to "TX".
Figure 5: Detailed connection options for TX mode.
Receiver (RX) Mode Setup
In RX mode, the B03Pro receives audio from your Bluetooth device (e.g., phone) and plays it through your wired speakers or stereo system.
- Connect the B03Pro's "3.5mm Out" or "Optical Out" port to your stereo system's corresponding input using the provided cables.
- Slide the mode switch on the B03Pro to "RX".
Figure 6: 1Mii B03Pro in RX mode, connected to a stereo system.
Bypass Mode Setup
Bypass mode allows audio from your TV to pass through the B03Pro directly to your sound system without Bluetooth processing. This is useful if you want to switch between Bluetooth audio and direct audio output from your TV without re-cabling.
- Connect your TV's audio output (AUX or Optical) to the B03Pro's corresponding input.
- Connect the B03Pro's corresponding output (AUX or Optical) to your sound system's input.
- Slide the mode switch on the B03Pro to "Bypass".
Figure 7: Bypass mode connection for direct audio passthrough.
5. TV Audio Settings for Optical Connection
When using the optical connection with your TV, it is crucial to configure your TV's audio output settings correctly to ensure sound is transmitted properly and to avoid issues like noise or no sound.
- Access your TV's audio settings menu.
- Locate the "Digital Audio Output Format" or similar setting.
- Set this format to PCM (Pulse-Code Modulation). Dolby/DTS formats are generally not supported by the B03Pro for optical input.
Figure 8: Example of TV optical audio settings, set to PCM.
For a visual guide on troubleshooting TV audio settings, please refer to the video below:
Video 1: Troubleshooting TV audio settings for optical connection to 1Mii B03Pro.
Operation
1. Pairing with Bluetooth Devices
After selecting TX or RX mode, the B03Pro will automatically enter pairing mode (indicated by flashing lights). To manually enter pairing mode, press and hold the Bluetooth button for approximately 2 seconds.
- In TX Mode: Put your Bluetooth headphones or speakers into pairing mode. They should automatically connect to the B03Pro.
- In RX Mode: Enable Bluetooth on your smartphone or tablet and select "1Mii B03Pro" from the list of available devices to connect.
For a general overview of the B03Pro's functions and setup, refer to the video below:
Video 2: General overview and setup of the 1Mii B03Pro.
2. Dual Link Functionality
The 1Mii B03Pro supports dual link, allowing you to connect two Bluetooth headphones or two Bluetooth speakers simultaneously in TX mode.
- Connect the first device as described in the pairing section.
- Once the first device is connected, put the second Bluetooth device into pairing mode.
- The B03Pro will automatically search and connect to the second device.
Figure 9: Dual link feature allowing two headphones to connect simultaneously.
For a detailed guide on pairing two Bluetooth headphones, please watch the video below:
Video 3: Instructions on how to pair two Bluetooth headphones with the 1Mii B03Pro.
3. Volume Control and Track Navigation
The B03Pro features dedicated buttons for volume control and track navigation:
- '+' Button: Press to increase volume; hold for next track.
- '-' Button: Press to decrease volume; hold for previous track.
Troubleshooting
If you encounter issues with your 1Mii B03Pro, please refer to the following common problems and solutions:
1. No Sound or Noise Issues
- Check TV Audio Output: Ensure your TV's digital audio output is set to PCM, especially when using the optical cable. Refer to "TV Audio Settings for Optical Connection" section above.
- Cable Connections: Verify all audio cables are securely connected to the correct input/output ports on both the B03Pro and your audio source/destination.
- Volume Levels: Confirm that the volume on both the B03Pro and your connected device (headphones, speakers, TV) is turned up.
2. Lip Sync Delay
If you experience a noticeable delay between video and audio (lip sync delay) in TX mode:
- Ensure your receiving Bluetooth device (headphones/speakers) also supports aptX Low Latency. Both the transmitter and receiver must support aptX LL to achieve minimal delay.
- Some TVs have an audio delay setting that can be adjusted to compensate.
3. Limited Range or Intermittent Connection
The operational range can be affected by various factors:
- Obstructions: Walls, metal objects, and other physical barriers can reduce range. Try to minimize obstacles between the B03Pro and your connected device.
- Interference: Wi-Fi routers, wireless TV adapters, and other 2.4GHz wireless devices can cause interference. Keep the B03Pro away from such devices.
- Receiving Device: The range also depends on the capabilities of the receiving Bluetooth device.
Figure 10: The 1Mii B03Pro offers extended range for whole-home audio.
4. How to Reset the B03Pro
If you experience persistent issues or wish to clear all pairing records, you can reset the B03Pro:
- Press and hold the Bluetooth button for approximately 10 seconds until all indicators flash once. This indicates a successful reset.
For a visual guide on how to reset the B03Pro, please refer to the video below:
Video 4: Instructions on how to reset the 1Mii B03Pro.
Specifications
| Feature | Detail |
|---|---|
| Model Number | B03Pro |
| Bluetooth Version | 5.3 |
| Supported Codecs | aptX HD, aptX Low Latency, aptX, AAC, SBC |
| DAC Chip | SABRE ESS DAC |
| Signal-to-Noise Ratio (SNR) | 121dB |
| Operational Range | Up to 265ft (80m) line-of-sight; 80-110ft (25-35m) indoors |
| Audio Inputs | Optical In, 3.5mm In (AUX/RCA) |
| Audio Outputs | Optical Out, 3.5mm Out |
| Product Dimensions | 3.8 x 2.9 x 0.9 inches |
| Item Weight | 10.2 ounces |
| Power Input | DC 5V |
Safety Information
- Keep the device away from water, fire, high humidity, or corrosive environments.
- Do not attempt to disassemble or modify the device.
- Use only the provided power adapter and cables.
- Avoid extreme temperatures.
Warranty and Support
The 1Mii B03Pro comes with a standard manufacturer's warranty. For detailed warranty information, technical support, or customer service, please refer to the official 1Mii website or contact their customer support directly. You may also find additional resources and FAQs on the product's Amazon listing page.
A PDF version of the user manual is available for download at: 1Mii B03Pro User Manual PDF
