1Mii ML300

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1Mii ML300 Bluetooth Transmitter Receiver User Manual

Your comprehensive guide to setting up and using your 1Mii ML300 device.

1. Introduction

The 1Mii ML300 is a compact and versatile Bluetooth audio adapter designed to enhance your audio experience. It functions as both a Bluetooth transmitter (TX mode) and a Bluetooth receiver (RX mode), allowing you to wirelessly stream audio to and from a wide range of devices. With support for advanced audio codecs like aptX Adaptive, aptX HD, and aptX Low Latency, the ML300 delivers high-fidelity sound with minimal delay, perfect for music, movies, and gaming.

2. Product Overview

2.1. Package Contents

Please check the package to ensure all items are present:

  • 1Mii ML300 Bluetooth Transmitter Receiver Unit
  • USB Type-C Charging Cable
  • 3.5mm Audio Cable
Package contents of 1Mii ML300, including the device, USB-C cable, and 3.5mm audio cable.

Image: The 1Mii ML300 package contents, showing the main unit, a USB Type-C charging cable, and a 3.5mm audio cable.

2.2. Device Layout

Familiarize yourself with the buttons and ports on your ML300 device:

  • TX/RX Switch: Toggles between Transmitter and Receiver modes.
  • Pairing Buttons (1 & 2): Used to initiate pairing with Bluetooth devices.
  • 3.5mm Audio Jack: For connecting to audio sources (TX mode) or audio output devices (RX mode).
  • USB Type-C Port: For charging the device.
Front view of the 1Mii ML300 Bluetooth adapter with its 3.5mm audio jack and illuminated pairing buttons.

Image: A close-up view of the 1Mii ML300 Bluetooth adapter, highlighting its illuminated pairing buttons and the connected 3.5mm audio cable.

3. Setup

3.1. Charging the Device

Before first use, fully charge the ML300. Connect the provided USB Type-C cable to the charging port on the device and the other end to a USB power adapter (not included) or a computer's USB port. The LED indicator will show charging status and turn off when fully charged. The device can be used while charging.

1Mii ML300 charging, indicating up to 15 hours of use.

Image: The 1Mii ML300 device being charged via its USB-C port, illustrating its long battery life of up to 15 hours.

1Mii ML300 connected to a laptop and speaker, charging while in use.

Image: The 1Mii ML300 connected to a laptop and a Bluetooth speaker, demonstrating its ability to be used while charging, ensuring uninterrupted audio playback.

3.2. Powering On/Off

To power on the ML300, slide the TX/RX switch to either the TX or RX position. To power off, slide the switch to the OFF (middle) position.

3.3. Mode Selection (TX/RX)

The ML300 operates in two modes: Transmitter (TX) and Receiver (RX). Use the slide switch on the side of the device to select the desired mode.

  • TX Mode: Transmits audio from non-Bluetooth devices (e.g., TV, PC) to Bluetooth headphones or speakers.
  • RX Mode: Receives audio from Bluetooth-enabled devices (e.g., smartphone, tablet) and outputs it to non-Bluetooth audio systems (e.g., wired speakers, car stereo).
Diagram showing the 1Mii ML300 in both Transmitter (TX) and Receiver (RX) modes with various connection examples.

Image: A visual guide illustrating the different connection possibilities for the 1Mii ML300 in both Transmitter (TX) and Receiver (RX) modes, including PCs, TVs, headphones, speakers, smartphones, and car audio systems.

4. Operating Modes

4.1. Transmitter (TX) Mode

In TX mode, the ML300 adds Bluetooth capability to your non-Bluetooth audio sources. This allows you to stream audio wirelessly to Bluetooth headphones or speakers.

  1. Slide the switch to the TX position.
  2. Connect the ML300 to your audio source (e.g., TV, PC, MP3 player) using the 3.5mm audio cable.
  3. Put your Bluetooth headphones or speaker into pairing mode.
  4. Press one of the pairing buttons (1 or 2) on the ML300 to initiate pairing. The LED will flash, indicating it's searching for a device.
  5. Once connected, the LED will turn solid, and audio will be transmitted wirelessly.

TX Mode Applications:

  • TV Audio: Connect to your TV's audio output to watch shows or movies with Bluetooth headphones without disturbing others.
    • A person watching TV with Bluetooth headphones connected via 1Mii ML300.

    Image: A user enjoying TV audio privately with Bluetooth headphones, facilitated by the 1Mii ML300 acting as a transmitter.

  • PC/Laptop Audio: Stream audio from your computer to Bluetooth speakers or headphones.
    • 1Mii ML300 connected to a laptop, transmitting audio to a Bluetooth speaker.

    Image: The 1Mii ML300 connected to a laptop's audio jack, wirelessly transmitting audio to a Bluetooth speaker, enabling a clean, cable-free desktop setup.

  • Gaming Consoles: Connect to your game console's audio output for wireless gaming audio.
    • A person playing a game console with Bluetooth headphones connected via 1Mii ML300.

    Image: A gamer using the 1Mii ML300 to connect Bluetooth headphones to a game console, providing wireless audio for an immersive gaming experience.

  • Airplane Entertainment: Enjoy in-flight entertainment wirelessly with your own Bluetooth headphones.
    • Person using 1Mii ML300 to connect Bluetooth headphones to an airplane's entertainment system.

    Image: A passenger on an airplane using the 1Mii ML300 to connect their Bluetooth headphones to the in-flight entertainment system, allowing for wireless audio enjoyment.

  • Gym Equipment: Transmit audio from gym machines with 3.5mm jacks to your Bluetooth earphones.
    • A person on a treadmill using 1Mii ML300 to transmit audio from exercise equipment to wireless earphones.

    Image: An individual exercising on a treadmill, using the 1Mii ML300 to wirelessly transmit audio from the gym equipment to their earphones, providing a tangle-free workout experience.

4.2. Receiver (RX) Mode

In RX mode, the ML300 receives Bluetooth audio from your smartphone, tablet, or laptop and outputs it to a non-Bluetooth audio system.

  1. Slide the switch to the RX position.
  2. Connect the ML300 to your audio output device (e.g., wired speaker, car stereo) using the 3.5mm audio cable.
  3. Enable Bluetooth on your smartphone, tablet, or laptop and search for

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