1Mii B03 Bluetooth Transmitter Receiver User Manual

Introduction

The 1Mii B03 is a versatile Bluetooth transmitter and receiver designed to bring high-fidelity wireless audio to your devices. It supports Bluetooth 5.3 technology and aptX Low Latency for a seamless, lag-free audio experience. This manual provides instructions for setup, operation, and troubleshooting.

Product Overview

The B03 unit features a compact design with multiple ports for audio input and output, and buttons for controlling power, pairing, volume, and mode selection.

Front Panel Layout

Description of the front panel:

• Power/Pair Button: Used to turn the device on/off and initiate Bluetooth pairing.
• Volume + Button: Increases the audio volume.
• Volume - Button: Decreases the audio volume.
• Mode Button: Switches between Transmitter (TX) and Receiver (RX) modes.

Rear Panel Layout

Description of the rear panel ports:

• To Speaker: 3.5mm AUX output port for connecting to speakers or headphones.
• To TV/PC: Input ports for connecting your audio source (TV, PC, etc.). Supports both Optical and 3.5mm AUX/RCA connections.
• Optical Out: Digital optical audio output port.
• Optical In: Digital optical audio input port.
• AUX Out: 3.5mm analog audio output port.
• AUX In: 3.5mm analog audio input port.
• DC 5V: Power input port for connecting the USB power cable.

Getting Started: Connections

Follow these steps to connect your 1Mii B03:

Power Connection

Connect the included USB-C cable to the DC 5V port on the B03 and the other end to a USB power source (e.g., TV USB port, PC USB port, or a 5V USB power adapter).

Audio Source Connection (Transmitter Mode - TX)

To transmit audio from your TV or PC to Bluetooth headphones/speakers:

1. Connect one end of an audio cable (Optical or 3.5mm AUX/RCA) to the audio output port of your TV or PC.
2. Connect the other end of the audio cable to the corresponding input port on the B03's "To TV/PC" section (Optical In or AUX In).

Audio Output Connection (Receiver Mode - RX)

To receive audio from a Bluetooth source (e.g., phone, tablet) and output to wired speakers or a soundbar:

1. Connect one end of a 3.5mm AUX cable to the "To Speaker" port on the B03.
2. Connect the other end of the AUX cable to the AUX In port of your speakers or soundbar.
3. Alternatively, use the Optical Out port on the B03 with an optical cable to connect to compatible audio systems.

Operation

Switching Modes

Press the "Mode" button to toggle between Transmitter (TX) and Receiver (RX) modes. The device will restart in the selected mode.

Bluetooth Pairing

Transmitter Mode (TX):

1. Ensure the B03 is in TX mode.
2. Turn on your Bluetooth headphones or speakers and put them into pairing mode.
3. Press and hold the "Power/Pair" button on the B03 for approximately 3 seconds until the indicator light flashes rapidly.
4. The B03 will automatically search for and connect to the nearest Bluetooth device. The indicator light will turn solid once connected.

Receiver Mode (RX):

1. Ensure the B03 is in RX mode.
2. Turn on the Bluetooth function on your smartphone, tablet, or computer.
3. Search for available Bluetooth devices and select "1Mii B03".
4. Once paired, the indicator light on the B03 will turn solid.

Dual Link (TX Mode)

The B03 can connect to two Bluetooth headphones or speakers simultaneously in Transmitter mode. After pairing the first device, repeat the pairing process for the second device.

Volume Control

Use the "Volume +" and "Volume -" buttons on the front panel to adjust the audio output level.

Troubleshooting

• No Sound: Ensure all cables are securely connected. Check that the correct input/output ports are used. Verify that the volume is not muted or set too low on both the B03 and the connected audio device. Make sure the B03 is in the correct mode (TX/RX).
• Cannot Pair: Ensure both the B03 and the Bluetooth device are in pairing mode and within range. Try restarting both devices. If connecting to a previously paired device, ensure it is discoverable.
• Audio Lag (Latency): Ensure both the transmitter (B03) and receiver (headphones/speaker) support aptX Low Latency. Check that aptX LL is enabled if there's an option on your receiving device.
• Intermittent Connection: Ensure the devices are within the optimal Bluetooth range (typically up to 10 meters / 33 feet without obstructions). Minimize interference from other wireless devices or physical obstructions.

Specifications

Package Contents

• 1 x 1Mii B03 Bluetooth Transmitter Receiver
• 1 x USB-C Charging Cable
• 1 x 3.5mm Audio Cable
• 1 x Optical Audio Cable
• 1 x User Manual

Safety Information

• Do not expose the device to water or moisture.
• Avoid operating the device in extreme temperatures.
• Do not attempt to disassemble or repair the device yourself.
• Keep the device away from heat sources.
• Use only the provided power adapter or a certified 5V USB power source.

Regulatory Compliance

FCC Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

CE Statement

This product complies with the essential requirements and other relevant provisions of Directive 2014/53/EU.