Introduction
The 1Mii B03Pro+ is a versatile Bluetooth 5.3 audio adapter designed to enhance your audio experience. It functions as both a transmitter and receiver, supporting high-fidelity audio codecs like LDAC, aptX HD, and aptX Low Latency. With its advanced CSR8675 chip, built-in ESS DAC, and user-friendly LCD display, the B03Pro+ provides seamless wireless audio connectivity for your TV, PC, home stereo, and other devices.
Video: Overview of the 1Mii B03Pro+ Bluetooth Transmitter Receiver, showcasing its features and design.
Package Contents
The 1Mii B03Pro+ package typically includes the following items:
- 1Mii B03Pro+ Bluetooth Adapter
- USB Power Cable
- 3.5mm Female to RCA Male Cable
- 3.5mm Audio Cable
- Optical Cable
- Power Adapter (may vary based on region, e.g., EU Plug, US Plug, or Without Plug)
Image: Contents of the 1Mii B03Pro+ package, showing the adapter and various cables.
Image: Package contents for the "Without Plug" variant, detailing the included cables.
Product Features
- Advanced Bluetooth 5.3 Chip: Equipped with the latest Qualcomm CSR8675 chip, ensuring stable connection and superior audio performance.
- High-Resolution Audio: Supports LDAC (up to 96kHz/24bit), aptX HD, aptX Low Latency, SBC, and AAC codecs for uncompromised sound quality.
Image: Comparison of audio codecs (SBC, aptX HD, LDAC) and their respective bitrates.
- Built-in ESS DAC: Features an ESS SABRE9018Q2C DAC chip, recognized by audiophiles for its golden standard audio performance, offering 127dB dynamic range and 384kHz/32bit decoding.
Image: Internal view of the B03Pro+ showcasing the CSR8675 Bluetooth chip and ESS DAC.
- 3-in-1 Functionality: Operates as a Bluetooth Transmitter (TX), Receiver (RX), and supports TX + Bypass mode.
Image: Visual representation of the three operational modes: Receiver, Transmitter, and TX+Bypass.
- TX + Bypass Mode: Allows simultaneous audio output to both wireless headphones and wired speakers/soundbar, ideal for family viewing.
- Ultra Low Latency: aptX Low Latency technology minimizes audio delay to less than 40ms, ensuring perfect synchronization between sound and picture (requires compatible receiving device).
- Dual Stream Support: Connects to two Bluetooth headphones or speakers simultaneously in Transmitter mode.
- LCD Display: A clear and readable LCD screen simplifies device selection and operation.
- Long Range: Equipped with dual antennas, the B03Pro+ can achieve a working distance of up to 60 meters in open areas.
Image: The B03Pro+ demonstrating its long-range wireless capability in a home environment.
- Multiple Ports: Supports RCA, 3.5mm, and Optical inputs/outputs for wide compatibility with various devices.
Image: Detailed view of the flexible audio input/output ports on the B03Pro+.
Setup and Installation
Connecting the Device
- Power Connection: Connect the 5V power cable to the DC IN port on the B03Pro+ and plug it into a power source.
- Audio Input/Output:
- Transmitter Mode (TX): Connect your audio source (e.g., TV, PC) to the B03Pro+ using the appropriate cable (Optical, 3.5mm, or RCA) to the input ports.
- Receiver Mode (RX): Connect the B03Pro+ to your audio system (e.g., home stereo, speakers) using the appropriate cable (Optical, 3.5mm, or RCA) from the output ports.
Image: Basic connection and pairing steps for the 1Mii B03Pro+.
Optical Audio Setting for TV
When connecting your TV via optical or coaxial output, ensure the TV's audio format is set to PCM or Stereo. Dolby/DTS formats are not supported and may result in no sound output.
Image: Example of TV optical audio settings, showing PCM selection.
Operating Instructions
Mode Selection
The B03Pro+ features a switch to select between Transmitter (TX), Receiver (RX), and Bypass modes:
- TX (Transmitter) Mode: Transmits audio from your device (e.g., TV) to Bluetooth headphones/speakers.
- RX (Receiver) Mode: Receives audio from your Bluetooth device (e.g., phone) and outputs it to your wired stereo system.
- Bypass Mode: Allows audio to pass through the device without Bluetooth processing, useful for simultaneous wired and wireless output (TX + Bypass).
Pairing
- Turn on the B03Pro+ and select the desired mode (TX or RX).
- The device will enter pairing mode, indicated by flashing red and blue lights.
- On your Bluetooth headphones/speakers (for TX mode) or phone/tablet (for RX mode), search for "B03Pro+" and connect.
- For the first pairing, ensure the distance between devices is within 1 meter.
Controls and Indicators
Image: Front panel controls and switches of the 1Mii B03Pro+.
- LCD Display: Shows current mode, connected devices, volume level, and active codec.
- Search Button: Initiates device search for pairing.
- Volume Up/Down Buttons: Adjust audio volume. Note: In TX mode with optical cable, volume control may not function if the connected device does not support Audio/Video Remote Control Profile.
- OK Button: Confirms selections.
- LDAC/LL/HD Switch: Toggles between LDAC, aptX Low Latency (LL), and aptX HD codecs. Select the appropriate codec based on your receiving device's capabilities for optimal performance.
Specifications
Image: Detailed product specifications.
| Feature | Detail |
|---|---|
| Model | B03Pro+ |
| Bluetooth Version | Bluetooth 5.3 |
| Audio Codec | SBC/AAC/aptX/aptX-LL/aptX-HD/LDAC (Note: AAC is only available as Receiver) |
| Bluetooth Chip | CSR8675 |
| Dimension | 110*70*28mm |
| Product Weight | 100.7g |
Comparison with B03Pro
Image: Feature comparison between B03Pro and B03Pro+ models.
Troubleshooting
Q1: Cannot pair the B03Pro+ with my Bluetooth headphones or speakers.
A:
- Turn off Bluetooth on all nearby mobile phones or internal PCs to prevent automatic pairing with other devices.
- For the first pairing, ensure the distance between the B03Pro+ and your device is within 1 meter.
- If pairing still fails, perform a factory reset on both the B03Pro+ and your Bluetooth headphones/speakers.
- To factory reset the B03Pro+, press and hold both the volume up and volume down buttons for approximately 5 seconds until all indicators flash once. The device will then enter pairing mode with flashing red and blue lights, allowing you to pair normally.
Q2: Why is there still a voice delay when using this low-latency B03Pro+ adapter with my Bluetooth headphones?
A: For true low latency, your receiving device (headphones/speakers) must also support aptX Low Latency. If the receiving device uses another codec (e.g., SBC, aptX), you might experience an audio delay of 70-200ms, which can be noticeable.
Q3: Why do the volume +/- buttons on my B03Pro+ not work in TX mode, but only in RX mode?
A: In TX mode, if you are using an optical cable for audio input, the volume +/- buttons on the B03Pro+ may not function if your connected device does not support the Audio/Video Remote Control Profile. Try switching the optical cable to a 3.5mm AUX or RCA audio cable; the volume buttons should then work.
Q4: After connecting the TV to 1Mii B03Pro+, can my Bluetooth headphones/speakers sound simultaneously with the TV's built-in speakers?
A: For many TV models, the built-in speakers may not function if you choose to use an external audio output device. This is a TV feature, and its availability depends on your TV's brand and model. However, the B03Pro+'s TX mode offers a unique "Bypass" function that allows you to share TV audio simultaneously with a wired EXTERNAL speaker/soundbar and a pair of Bluetooth headphones.
Important Notices
- The 1Mii B03Pro+ TX mode supports simultaneous sound with a wired EXTERNAL speaker (not internal TV speakers) and one pair of Bluetooth headphones/speakers.
- The 1Mii B03Pro+ Bluetooth Transmitter/Receiver does NOT support simultaneous transmitting and receiving functions.
- This Bluetooth adapter does not have a microphone and does NOT support online calls or conferences with a headset.
- Digital optical audio sources for transmission must be set to PCM or Stereo. Dolby/DTS input is not supported.
- aptX HD and aptX Low Latency cannot operate simultaneously; choose the best for your use case.
- If your headphones or speakers do not support aptX HD or aptX LL, the LL/HD button will have no effect.
- Not ideal for use with live music, musical instruments, or karaoke.
- To disable automatic reconnection, clear the B03Pro+ memory by pressing the volume up and down buttons for 5 seconds.
Warranty & Support
1Mii Official Store offers the following services:
- 7-Day Returns: Enjoy 7 days to return if any quality problems.
- 1-Year Warranty: All products have a 1-year warranty from our store.
- Delivery Time: Most items will be shipped within 48 hours.
- Shopping Help: All emails will be answered within 24 hours.
Image: Summary of warranty and service terms.
Free Returns: 1Mii Official Store participates in free returns. You can return all items for any reason within 15 days. This service is available for customers in specific countries including Russia, South Korea, France, Spain, Chile, Germany, Brazil, Israel, United States, Poland, Netherlands, Italy, Canada, Australia, United Kingdom, Saudi Arabia, United Arab Emirates, Japan, Ukraine, Mexico, Belgium, Czech Republic, Portugal, and Switzerland.
