Indledning
The Questyle M15C is a high-fidelity portable Digital-to-Analog Converter (DAC) and headphone amplifier designed to deliver exceptional audio quality. It integrates an ESS ES9281AC DAC chip with Questyle's patented Current Mode Amplification (CMA) technology, ensuring precise and powerful sound reproduction. This device is compatible with iOS, Android, and PC platforms, supporting a wide range of high-resolution audio formats.
Pakkens indhold
Bekræft at alle varer er til stede i pakken:
- Questyle M15C USB DAC Headphone Amplifier x1
- Type-C til Type-C kabel x1
- Type-C til USB-A-kabel x1
- Brugervejledning x1

Image: The Questyle M15C device shown alongside its packaging and the included Type-C to Type-C and Type-C to USB-A cables.
Produkt overview
The M15C features a compact, durable aluminum chassis with a transparent window showcasing its internal circuitry. It includes dual headphone output jacks (3.5mm unbalanced and 4.4mm balanced) and a USB Type-C input port for data and power.

Billede: En detaljeret view of the Questyle M15C, highlighting its transparent casing that reveals the internal circuit board and the various input/output ports.
Opsætning
- Tilslut til kildeenhed: Use the provided Type-C to Type-C cable to connect the M15C to your Android phone, PC, or other compatible device. For iOS devices with a Lightning port, an MFi-certified Lightning to Type-C adapter (Questyle LTC02 or similar, sold separately) is required.
- Tilslut hovedtelefoner: Plug your headphones into either the 3.5mm (unbalanced) or 4.4mm (balanced) output jack on the M15C.
- Tænd: The M15C draws power directly from the connected source device and will power on automatically upon connection.
Betjeningsvejledning
Once connected, the M15C functions as an external sound card for your device, bypassing its internal audio processing for superior sound quality.
- Lydstyrkekontrol: Adjust the volume directly from your source device (phone, PC). The M15C does not have its own volume control.
- Forstærkningsjustering: The M15C features manual gain adjustment. Refer to the device's side for a small switch or button to toggle between low and high gain modes. High gain is recommended for headphones with higher impedance (up to 600 ohms) or lower sensitivity.
- MFi-certificering: The M15C is MFi certified, ensuring seamless compatibility and optimal performance with Apple devices when used with an appropriate adapter.

Image: The Questyle M15C connected via a Type-C cable to a smartphone, demonstrating its use as a portable audio enhancement device while playing music.
Forbindelse
The M15C offers versatile connectivity options:
- Input: USB Type-C for digital audio input and power.
- Udgange:
- 3.5 mm ubalanceret hovedtelefonstik
- 4.4 mm balanceret hovedtelefonstik
- Kompatibilitet: Supports iOS, Android, and PC operating systems.
Audio Quality Features
The M15C is engineered for superior audio performance:
- DAC-chip: Features an ESS ES9281AC flagship DAC chip.
- Ampliifikation: Incorporates Questyle's Current Mode Amplification (CMA) technology.
- Lav støj: Achieves a bottom noise level below -130dB.
- Lav forvrængning: Total Harmonic Distortion (THD) of 0.0003%.
- Høj opløsning support: Decodes PCM from 16Bit/44.1kHz up to 32Bit/384kHz and DSD256 (1-bit).
- Udgangseffekt: Up to 300mW at 32 ohms.
Opretholdelse
To ensure the longevity and optimal performance of your Questyle M15C:
- Hold enheden ren og fri for støv. Brug en blød, tør klud til rengøring.
- Undgå at udsætte enheden for ekstreme temperaturer, fugt eller direkte sollys.
- Forsøg ikke at skille enheden ad eller ændre den, da dette vil ugyldiggøre garantien.
- Opbevar enheden et sikkert sted, når den ikke er i brug, for at forhindre fysisk skade.
Fejlfinding
If you encounter issues with your M15C, refer to the following common solutions:
- Ingen lyd:
- Ensure the M15C is securely connected to both the source device and headphones.
- Check the volume level on your source device.
- Verify that the correct audio output device (M15C) is selected in your computer's sound settings or smartphone's audio options.
- Test with different headphones or a different source device to isolate the problem.
- Forvrænget lyd:
- Reduce the volume on your source device.
- Sørg for din lyd fileer ikke beskadigede eller af lav kvalitet.
- Check if the gain setting is appropriate for your headphones. If using sensitive headphones, try the low gain mode.
- Enhed ikke genkendt:
- Tilslut USB-kablet igen.
- Try a different USB port on your computer or a different cable.
- For iOS devices, ensure you are using an MFi-certified Lightning to Type-C adapter.
- Genstart din kildeenhed.
Specifikationer
| Feature | Specifikation |
|---|---|
| Mærke | Questyle |
| Model | M15C |
| Producentreference | QS-M15C-Silver |
| ASIN | B0DPX53Z7J |
| Forbindelsesteknologi | Kablet (USB Type-C) |
| Materiale | Aluminium |
| Output Wattage | 300 milliwatt |
| Varens vægt | 110 gram |
| Pakkedimensioner | 14 x 7 x 3 cm |
| DAC-chip | ESS ES9281AC |
| Amplifikation | Aktuel tilstand Amplification (CMA) |
| Støjniveau | Below -130dB |
| THD | 0.0003 % |
| PCM -understøttelse | 16Bit/44.1kHz to 32Bit/384kHz |
| DSD Support | DSD256 (1-bit) |
| Understøttelse af hovedtelefonimpedans | Op til 600 ohm |
Garantioplysninger
Questyle products are covered by a limited warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary by region and retailer. Please retain your proof of purchase for warranty claims. For detailed warranty information, refer to the warranty card included in your product packaging or visit the official Questyle webwebsted.
Støtte
For technical assistance, product inquiries, or customer service, please contact Questyle support through their official website. You may find FAQs, driver downloads, and contact information on their support pages. When contacting support, please have your product model (M15C) and ASIN (B0DPX53Z7J) available.