Introduction
The 1Mii ML301 is a versatile Bluetooth 5.3 audio adapter designed to function as both a Bluetooth transmitter (TX) and a Bluetooth receiver (RX). It enables wireless audio streaming for a wide range of devices, transforming non-Bluetooth audio sources into Bluetooth-enabled ones, and vice-versa. Key features include support for advanced audio codecs like aptX Adaptive, aptX HD, and aptX Low Latency, allowing for high-quality audio and minimal delay. It also supports simultaneous connection to two Bluetooth devices.
Contenu du colis
- Émetteur-récepteur Bluetooth 1Mii ML301
- Câble audio auxiliaire 3.5 mm
- Câble de chargement USB-C
- Manuel d'utilisation
Appareil terminéview
Familiarize yourself with the ML301's components:
- Bouton Bluetooth : Utilisé pour l'appairage et la réinitialisation.
- Commutateur TX/RX : Toggles between Transmitter (TX) and Receiver (RX) modes, or powers off the device.
- Prise jack AUX 3.5 mm : Pour l'entrée/sortie audio.
- Port USB-C : Pour charger l'appareil.

Charger l'appareil
The ML301 has a built-in battery that provides up to 12 hours of use in TX mode and 15 hours in RX mode. It can also be used while charging.
- Connect the USB-C charging cable to the ML301's USB-C port.
- Connect the other end of the USB-C cable to a 5V USB power adapter (not included).
- Une charge complète prend environ 2.5 heures.

Mode d'emploi
1. Mode émetteur (TX)
In TX mode, the ML301 transmits audio from non-Bluetooth devices (like TVs, PCs, or fitness equipment) to Bluetooth-enabled headphones or speakers.
- Connect one end of the 3.5mm AUX audio cable to the ML301's 3.5mm jack.
- Connect the other end of the AUX cable to the 3.5mm audio output jack of your audio source (e.g., TV, PC, MP3 player, PS4/PS5).
- Slide the TX/RX switch to the 'TX' position. The ML301 will automatically enter pairing mode (the LED will flash red and blue alternately).
- Enable Bluetooth on your headphones or speakers and place them close to the ML301.
- Once paired, the ML301's LED will turn purple, indicating a successful connection.

Video demonstrating how to use the ML301 in TX mode, including connecting the AUX cable and pairing with Bluetooth headphones.
2. Mode récepteur (RX)
In RX mode, the ML301 receives audio from Bluetooth-enabled devices (like smartphones or tablets) and outputs it to non-Bluetooth audio systems (such as home stereos, wired speakers, or car audio).
- Connect one end of the 3.5mm AUX audio cable to the ML301's 3.5mm jack.
- Connect the other end of the AUX cable to the 3.5mm audio input jack of your audio receiver (e.g., wired speakers, amplifier, car audio).
- Slide the TX/RX switch to the 'RX' position. The ML301 will automatically enter pairing mode (the LED will flash red and blue alternately).
- Enable Bluetooth on your smartphone, tablet, or laptop and search for 'ML301' in the Bluetooth device list.
- Select 'ML301' to connect. Once paired, the ML301's LED will turn purple, indicating a successful connection.

3. Dual Device Connection (TX Mode)
The ML301 can connect to two Bluetooth headphones or speakers simultaneously in TX mode.
- Connect the ML301 to your audio source and pair it with the first Bluetooth device as described in the TX mode instructions.
- Once the first device is connected (LED turns purple), press the Bluetooth button on the ML301 for approximately 2 seconds until the LED flashes red and blue alternately again. This puts the ML301 back into pairing mode.
- Enable Bluetooth on your second headphones or speakers and place them close to the ML301.
- Once the second device is paired, the ML301's LED will turn purple, indicating both devices are connected.

4. Codecs audio
The ML301 supports various audio codecs for optimal sound quality and latency:
- aptX Adaptif : Dynamically adjusts audio quality and latency for the best experience, offering high-quality sound, stable connection, and low power consumption.
- aptX HD : Provides CD-like high-quality stereo audio.
- aptX Low Latency (LL): Ideal for TV viewing, minimizing audio delay to ensure lip-sync. Note: Both the ML301 and your receiving Bluetooth device (headphones/speakers) must support aptX LL for this feature to work. Otherwise, a delay of 70-220ms may occur.
- AAC/SBC: Standard Bluetooth codecs.
In TX mode, the ML301 supports SBC/aptX/aptX HD/LL/Adaptive audio decoding. In RX mode, it supports SBC/AAC/aptX/aptX HD/Adaptive audio decoding.


5. Technologie Bluetooth 5.3
The ML301 incorporates Bluetooth 5.3 technology, offering faster and more stable connections. In an unobstructed environment, the Bluetooth signal transmission distance can reach 10-20 meters.

6. Cas d'utilisation polyvalents
The compact and portable design of the ML301 makes it suitable for various applications:
- Divertissements en vol : Connect to airplane audio systems to use your wireless headphones.
- Audio de voiture : Stream music wirelessly from your phone to your car's audio system.
- Équipement de fitness : Connect to gym machines with a 3.5mm jack to use your Bluetooth headphones.


Dépannage
- Problèmes de couplage : If the ML301 fails to pair, ensure no other Bluetooth devices are connected to the ML301 or the target device. Turn off Bluetooth on previously paired devices (e.g., phone's Bluetooth). Keep the ML301 and the target Bluetooth device within 1 meter during pairing. You may need to reset the ML301's pairing record by pressing the Bluetooth button for 8-10 seconds until the light turns purple and flashes three times.
- Délai audio (latence) : For minimal delay, ensure both the ML301 and your Bluetooth headphones/speakers support aptX Low Latency (aptX LL) technology. If not, a delay of 70-220ms may occur. Note that aptX LL only functions in TX mode.
- Arrêt automatique : The ML301 features a power-off protection function. If it is not connected to any device within 5 minutes, it will automatically shut down. To use it again, slide the power switch from TX/RX to 'OFF' and then back to TX/RX. It will then reconnect to previously paired devices.
- Compatibilité des AirPods : The ML301 is compatible with AirPods (1st and 2nd generation) but not with AirPods Pro (2nd generation) or AirPods Max.
Video demonstrating how to reset the ML301's Bluetooth pairing, which can help resolve connection issues.
Caractéristiques
| Marque | 1Mii |
| Numéro de modèle | ML301 |
| Technologie de connectivité | AUX, Bluetooth |
| Version Bluetooth | 5.3 |
| Supported Audio Codecs (TX) | SBC, aptX, aptX HD, aptX LL, aptX Adaptive |
| Supported Audio Codecs (RX) | SBC, AAC, aptX, aptX HD, aptX Adaptive |
| Continuous Use Time (TX Mode) | Jusqu'à 12 XNUMX heures |
| Continuous Use Time (RX Mode) | Jusqu'à 15 XNUMX heures |
| Temps de charge | Environ 2.5 heures |
| Dimensions (L x l x H) | 5.5 x 4 x 1.5 cm |
| Poids | 4 grams (battery) |
| Matériel | Plastique |
Garantie et assistance
The 1Mii ML301 comes with a 1-year quality warranty. For technical support or warranty claims, please contact 1Mii customer service through your retailer or the official 1Mii website.