1. Introduction et plusview
The Questyle M18i is a high-resolution portable USB DAC and headphone amplifier designed to enhance your audio experience across various devices. Featuring Bluetooth 5.4 connectivity, dual 4.4mm balanced and 3.5mm unbalanced outputs, and support for advanced codecs like LDAC, it delivers lossless audio quality for smartphones, PCs, and laptops. Its compact design integrates cutting-edge technology, including the ESS ES9219Q DAC chip and Questyle's patented Current Mode Amplifier SiP modules, ensuring exceptional sound performance with ultra-low distortion.
Figure 1.1: Questyle M18i Headphone Amplifier
2. Principales caractéristiques
- Advanced DAC Performance: Equipped with the latest ESS flagship ES9219Q DAC chip, utilizing Questyle and ESS's collaborative TTA DAC framework for optimal performance.
- Mode actuel Amplification : Features two patented quad-core Current Mode Amplifier SiP modules, providing powerful drive, delicate timbre, and an ultra-low distortion record of 0.0002%.
- Versatile Outputs and Controls: Offers both 3.5mm unbalanced and 4.4mm balanced outputs. Includes manual gain control for various headphones and an MFB button for Bluetooth functions. Volume buttons provide 60 levels of loudness.
- Seamless Bluetooth and USB DAC Modes: Supports seamless switching between lossless Bluetooth and USB DAC modes.
- Qualcomm Snapdragon Sound Technology: Integrates Qualcomm's latest Snapdragon Sound technology with Bluetooth 5.4, supporting AAC, SBC, aptX, aptX HD, aptX Adaptive, LE AUDIO, and 24bit/96kHz LDAC for wireless lossless audio.
- Enhanced Call Quality: Incorporates Qualcomm's cVc Generation 8.0 call solution with ClearVoice Capture technology and an Infineon flagship microphone for crystal-clear voice calls with noise suppression.
3. Contenu du colis
Veuillez vous assurer que tous les articles sont présents dans le colis :
- Casque Questyle M18i Amplifier
- Câble USB-C vers USB-C
4. Schéma du produit et composants
Familiarize yourself with the various parts and connections of your M18i device.
Figure 4.1: M18i Internal Components and PCB Layout
Les principaux composants comprennent :
- 1. Patented SP Current Mode Ampmodule lificateur : États-Unis 9,614,483 2 XNUMX BXNUMX
- 2. ESS Flagship USB DAC: ES9219Q x 2
- 3. 4.4mm balanced headphone jack
- 4. Torex power management system
- 5. Asynchronous Clock Patented Architecture
- 6. Port de charge USB Type-C
- 7. Infineon's flagship microphone
- 8. USB Type-C Data Port
- 9. prise casque 3.5mm
- 10. Gain/MFB button: (Multi-function button only for BT Mode)
- 11. Bluetooth & PC/Phone Mode Switch
- 12. XMOS USB DAC
- Contrôleur MCU
- Qualcomm Bluetooth Module
- Écran OLED
Figure 4.2: 4.4mm and 3.5mm Dual Outputs
5. Installation
5.1 Charge initiale
Before first use, fully charge your M18i. Connect the provided USB-C cable to the M18i's USB Type-C Charging Port and the other end to a compatible USB power source (e.g., computer USB port, wall adapter). The charging time is approximately 2 hours.
5.2 Connexion d'un casque
The M18i features both 3.5mm unbalanced and 4.4mm balanced headphone jacks. Insert your headphone cable into the appropriate jack. Ensure the connection is secure.
5.3 Connexion de l'appareil
The M18i supports connection to various systems including Android, iOS, Windows, and Mac devices. Use the appropriate USB-C cable to connect the M18i to your smartphone, PC, tablet, or laptop.
Figure 5.1: M18i Compatibility with Various Platforms
6. Mode d'emploi
6.1 Mode Selection (Bluetooth / PC / Phone)
Use the dedicated switch on the M18i to select between Bluetooth, PC, or Phone mode.
6.1.1 Phone Mode
In Phone Mode, the M18i operates using its internal battery for power. The USB audio port is solely for data transfer and does not draw or supply power to the connected phone.
Figure 6.1: M18i in Phone Mode
6.1.2 Mode Bluetooth
In Bluetooth Mode, the M18i also relies exclusively on its battery for power supply. To pair, switch to Bluetooth mode, then search for 'Questyle M18i' on your device's Bluetooth settings and connect.
Figure 6.2: M18i in Bluetooth Mode
6.1.3 Mode PC
In PC Mode, the M18i's USB audio port can transfer data and supply power to charge the battery or provide power to the system. When connected to a phone in PC mode, the M18i will consume the phone's battery power.
Figure 6.3: M18i in PC Mode
Commutateur de gain 6.2
In Phone or PC mode, press the "GAIN/MFB" button to switch between HIGH/LOW gain settings. This allows you to match the impedance of different headphones for optimal audio output.
Figure 6.4: Gain Switch Location
6.3 MFB Button (Multi-Function Button)
The MFB multi-function button is only operable in Bluetooth mode.
- Lecture de musique : During playback in Bluetooth connected state, click the "MFB" button once to toggle between Pause and Play. Click it twice to skip to the next track.
- Gestion des appels : When a call comes in while playing in Bluetooth connected state, click the "MFB" button once to answer the call. Click it twice to reject the call. During an active call, click it once to end the call.
Figure 6.5: MFB Button Location
6.4 Contrôle du volume
Use the dedicated volume buttons (+ and -) on the M18i to adjust the loudness. The device provides 60 levels of volume control.
7. Entretien
To ensure the longevity and optimal performance of your Questyle M18i, follow these maintenance guidelines:
- Nettoyage: Use a soft, dry, lint-free cloth to clean the exterior of the device. Avoid using harsh chemicals, cleaning solvents, or strong detergents, as they may damage the finish or internal components.
- Stockage: When not in use, store the M18i in a cool, dry place, away from direct sunlight, extreme temperatures, and high humidity.
- Manutention: Manipulez l'appareil avec précaution. Évitez de le faire tomber ou de le soumettre à des chocs violents, qui pourraient endommager ses circuits internes.
- Ports de connectivité: Keep the headphone jacks and USB-C ports free from dust and debris. You may use a can of compressed air to gently clear any obstructions.
- Chargement : Always use the provided cable or a high-quality, compatible USB-C cable for charging to prevent potential damage to the battery or charging port.
8. Dépannage
If you encounter issues with your M18i, please refer to the following common problems and solutions:
| Problème | Cause possible | Solution |
|---|---|---|
| Pas de sortie audio | Incorrect mode selected; Loose headphone connection; Low device volume; Device not powered on. | Ensure correct mode (Phone/PC/Bluetooth) is selected. Check headphone connection. Increase volume on M18i and source device. Power on the M18i. |
| Problèmes de connexion Bluetooth | M18i not in pairing mode; Interference; Previously paired device interfering. | Ensure M18i is in Bluetooth mode and discoverable. Move closer to the source device. Turn off Bluetooth on other nearby devices. Try forgetting and re-pairing the M18i on your source device. |
| Mauvaise qualité sonore (distorsion, faible volume) | Incorrect gain setting; Low quality audio source; Damaged cable/headphones. | Adjust the gain setting (HIGH/LOW) to match your headphones. Ensure you are playing high-quality audio files. Test with different headphones or cables. |
| Durée de vie de la batterie courte | High volume usage; Bluetooth mode (higher power consumption); Old battery. | Reduce volume. Consider using PC mode for extended listening as it can draw power from the host. Ensure the device is fully charged before use. |
| L'appareil ne charge pas | Câble/chargeur défectueux ; port de charge sale. | Try a different USB-C cable and power adapter. Clean the USB-C charging port gently. |
If the problem persists after trying these solutions, please contact Questyle customer support for further assistance.
9. Spécifications
| Spécification | Valeur |
|---|---|
| Nom du modèle | M18i |
| Marque | Questyle |
| Technologie de connectivité | Bluetooth, USB |
| Technologie de communication sans fil | Bluetooth 5.4 |
| Prise pour casque | 3.5 mm Jack, 4.4 mm Balanced |
| Appareils compatibles | Cellphones, Smartphone, Various systems including Android, iOS, Windows, Mac, and devices like phones, computers, tablets, laptops, audio players, and car audio systems. |
| Matériel | Aluminium |
| Poids de l'article | 0.14 kilogramme (environ 5 onces) |
| Méthode de contrôle | Bouton poussoir |
| Temps de charge | 2 heures |
| Impédance | 300 ohms |
| Puce CNA | ESS ES9219Q x 2 |
| Codecs audio pris en charge | AAC, SBC, aptX, aptX HD, aptX Adaptive, LE AUDIO, LDAC |
| Max Resolution (USB DAC) | PCM 384kHz/DSD256 |
| Microphone | Infineon flagship microphone with cVc Generation 8.0 |
10. Garantie et assistance
The Questyle M18i is sold by Questyle, ensuring direct support from the manufacturer. For specific warranty details, please refer to the warranty card included with your product or visit the official Questyle website. For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact Questyle customer support through their official channels.
Questyle Official Website: www.questyle.com
Veuillez conserver votre preuve d'achat pour les réclamations au titre de la garantie.