1Mii ML301 Bluetooth Transmitter Receiver User Manual

Introduction

The 1Mii ML301 is a versatile 2-in-1 Bluetooth Transmitter and Receiver designed to bring wireless audio capabilities to a wide range of devices. Featuring Bluetooth 5.3 technology with aptX HD and Low Latency codecs, it ensures high-quality, synchronized audio transmission. Whether you want to stream audio from non-Bluetooth devices to your wireless headphones or enable your wired speakers to receive Bluetooth audio from your smartphone, the ML301 offers a seamless and convenient solution.

What's in the Box

• 1Mii ML301 Bluetooth Transmitter Receiver Unit
• 3.5mm Audio Cable
• USB-C Charging Cable
• Instruction Manual

Product Features

• 2-in-1 Bluetooth Transmitter & Receiver: Functions as both a transmitter (TX mode) for non-Bluetooth devices (e.g., TV, MP3 player, airplane entertainment) to Bluetooth headphones/speakers, and a receiver (RX mode) for wired speakers/headphones to receive audio from Bluetooth-enabled devices (e.g., phone, tablet).
• Dual Link Support: Connects up to two Bluetooth headphones simultaneously in TX mode, allowing shared audio experiences.
• aptX Low Latency & aptX HD: Provides impressive sound quality with minimal audio delay, ideal for watching videos and gaming. Note: Your receiving device must also support aptX Low Latency for minimal delay.
• Long Battery Life: Built-in battery offers up to 10 hours in TX mode and 12 hours in RX mode, with support for playing while charging.
• Portable & Wireless Design: Compact and lightweight, making it easy to carry for travel, gym, or car use.
• Broad Compatibility: Supports 3.5mm AUX/RCA output/input and USB-A output for PS4/PS5.

Setup and Operation

Device Overview

The 1Mii ML301 unit features a Bluetooth pairing button, a TX/OFF/RX mode switch, a 3.5mm audio input/output jack, and a USB-C charging port.

Understanding Modes: Transmitter (TX) vs. Receiver (RX)

This diagram illustrates the two primary modes of the ML301. In Receiver (RX) Mode, it allows wired earphones, car stereos, or wired speakers to receive Bluetooth audio from devices like tablets or cell phones. In Transmitter (TX) Mode, it enables non-Bluetooth devices such as gaming consoles, airplanes, or TVs to transmit audio wirelessly to Bluetooth earbuds, speakers, or headphones.

TX Mode: Transmitting Audio

Use TX mode to wirelessly transmit audio from non-Bluetooth devices to your Bluetooth headphones or speakers.

1. Connect the ML301 to the audio output of your non-Bluetooth device (e.g., TV, MP3 player, airplane entertainment system) using the provided 3.5mm audio cable.
2. Slide the switch to the 'TX' position. The ML301 will automatically enter pairing mode, indicated by the LED flashing blue and red.
3. Put your Bluetooth headphones or speakers into pairing mode.
4. The ML301 will automatically connect to your device. Once connected, the LED will turn solid blue.

TX Mode Application: In-Flight Audio

Enjoy high-quality entertainment on flights by connecting your AirPods or other wireless headphones to the in-flight audio system via the ML301 in TX mode.

TX Mode Application: TV Audio with Low Latency

The ML301 supports aptX Low Latency, ensuring synchronized audio when watching TV. This is ideal for avoiding audio-visual delays, provided your headphones also support aptX Low Latency.

TX Mode Application: Dual Connection

The ML301 supports connecting two pairs of wireless headphones simultaneously, allowing you to share audio from your TV or other devices with a friend or family member.

TX Mode Application: Gym Equipment

Connect the ML301 to gym equipment with a 3.5mm audio jack to enjoy your workout with wireless headphones, eliminating tangled wires.

TX Mode Instructional Video

Watch this video for a step-by-step guide on how to use the ML301 Bluetooth AUX Adapter in Transmitter (TX) Mode.

RX Mode: Receiving Audio

Use RX mode to enable your wired speakers or headphones to receive Bluetooth audio from your smartphone, tablet, or computer.

1. Connect the ML301 to the audio input of your wired speaker or headphones using the provided 3.5mm audio cable.
2. Slide the switch to the 'RX' position. The ML301 will automatically enter pairing mode, indicated by the LED flashing blue and red.
3. On your smartphone, tablet, or computer, enable Bluetooth and search for 'ML301' in the list of available devices.
4. Select 'ML301' to connect. Once connected, the LED will turn solid blue.

RX Mode Application: Wireless Home Audio

Upgrade your wired speakers or home stereo system to receive high-quality wireless audio from your Bluetooth-enabled devices using the ML301 in RX mode.

RX Mode Application: Car Audio System

Easily connect your smartphone to a non-Bluetooth car audio system via the ML301's AUX input, allowing for wireless music streaming.

RX Mode Instructional Video

This video demonstrates how to set up and use the ML301 Bluetooth AUX adapter in Receiver (RX) Mode.

General Operation Tips

• LED Indicator: The LED light changes color to indicate the active codec (e.g., aptX Low Latency, aptX HD) and pairing status.
• Power On/Off: Slide the switch to 'OFF' to power down the device.
• Charging: Use the provided USB-C cable to charge the device. A full charge takes approximately 2 hours.

Specifications

Troubleshooting

Common Issues and Solutions

• No Sound/Intermittent Audio:
  • Ensure the ML301 is correctly connected to the audio source/output device.
  • Verify the ML301 is in the correct mode (TX for transmitting, RX for receiving).
  • Check that your Bluetooth headphones/speakers are in pairing mode and successfully connected to the ML301.
  • Adjust volume levels on both the ML301 and your connected audio devices.
  • If experiencing intermittent audio, ensure the ML301 is within the unobstructed Bluetooth range (32-50 feet).
• Audio Delay (Lag):
  • For minimal delay, both the ML301 and your Bluetooth headphones/speakers must support aptX Low Latency. Check your device specifications.
  • Ensure there are no significant obstacles between the ML301 and your receiving device.
• Cannot Pair/Connect:
  • Ensure the ML301 is in pairing mode (LED flashing blue and red).
  • Make sure your receiving/transmitting device is also in pairing mode.
  • Try resetting the ML301 (see video below).
  • Clear previous Bluetooth connections on both the ML301 and your device, then try pairing again.

How to Reset the ML301

This video provides instructions on how to reset your 1Mii ML301 device, which can help resolve various connectivity issues.

Maintenance

To ensure the longevity and optimal performance of your 1Mii ML301, follow these maintenance guidelines:

• Keep the device dry and away from moisture.
• Avoid extreme temperatures.
• Clean the device with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
• Store in a cool, dry place when not in use.

Safety Information

Ensure your headphones or speakers also support aptX-low latency or aptX-Adaptive technology. If not, you may experience a noticeable delay in audio.

Warranty and Support

For warranty information and technical support, please refer to the official 1Mii website or contact their customer service directly. Keep your purchase receipt for warranty claims.