Uvod

Image: The SMSL M20 USB DAC and Headphone Ampoživitelj, razstavaasing its compact design and transparent top panel.
This manual provides detailed instructions for the setup, operation, and maintenance of your SMSL M20 USB DAC and Headphone Amplifier. The M20 is designed to deliver high-fidelity audio performance for various applications, including gaming, music listening, and professional audio setups. Please read this manual thoroughly to ensure proper use and to maximize your device's potential.
Konec izdelkaview in ključne lastnosti
The SMSL M20 is a versatile USB DAC and headphone amplifier engineered for superior audio quality and broad compatibility.
- Advanced DAC Architecture: Equipped with four CS43131 decoding chips, the M20 achieves a dynamic range of 119 dB and ultra-low distortion of -115 dB, ensuring pristine audio reproduction.
- Optimizirano za igranje iger: Features a dual-mode USB interface (USB 2.0/1.1). USB 1.1 is specifically optimized for gaming consoles like Switch and PS5, ensuring low-latency audio. The XMOS XU-316 USB chip supports PCM 32-bit/768 kHz and DSD256 decoding.
- MQA and MQA-CD Decoding: Incorporates exclusive MQA-CD decoding technology to accurately restore master-level audio details, providing an authentic listening experience.
- Zmogljive slušalke Ampdvigalo: Features 3.5mm and 4.4mm headphone jacks. Each channel is powered by a TPA6120A2 amplifier chip, delivering robust output for high-end headphones with clear and full sound quality.
- Customizable PCM Filters: Includes five built-in PCM filters to tailor the sound to different listening preferences and scenarios:
- Fast, low-latency filter (F1) for intense gaming.
- Fast, phase-compensated filter (F2) for precise soundstage localization.
- Slow, low-latency filter (F3) for relaxed music.
- Slow, phase-compensated filter (F4).
- Non-oversampling mode (F5) for original recording characteristics.
- Professional Circuit Design: Features an integrated, independent clock processing circuit to significantly reduce jitter. Utilizes high-quality audio-specific resistors and capacitors to enhance sound quality and minimize signal interference.

Image: Internal components of the SMSL M20, highlighting the four Cirrus Logic CS43131 DAC chips, the XMOS XU-316 USB chip, and the TPA6120A2 headphone amplifier chips, which contribute to its high-fidelity audio processing.

Slika: Bližnji posnetek view of the SMSL M20's internal circuit board, detailing the dedicated audio clock processing, high-grade audio-specific resistors and capacitors, and the fully balanced headphone amplification circuit design, all contributing to its premium sound quality.
Uvod v komponento
The SMSL M20 requires a dedicated USB power supply for stable and efficient operation. Below is an overview of the device's controls and connections.

Image: Detailed diagram illustrating the various components and ports of the SMSL M20 DAC. This includes front panel controls for volume and menu, and rear panel connections for USB input, power, line output, and headphone outputs.
- Znižaj glasnost: Decreases the output volume.
- Povečaj glasnost: Increases the output volume.
- Gumb menija: Uporablja se za navigacijo po nastavitvah in možnostih.
- Vhod USB: Connects the M20 to a source device (PC, console, phone) for audio data.
- Power (DC 5V / 1A): Dedicated power input for the device.
- LINE izhod: Analog audio output for connecting to external amplifierji ali aktivni zvočniki.
- Izhod za slušalke: Includes both 3.5mm and 4.4mm jacks for various headphone types.
- Stikalo za ambientalno svetlobo: (Press Volume Down and Volume Up buttons simultaneously) Controls the ambient lighting feature.
Navodila za namestitev
- Napajalni priključek: Connect the provided DC 5V/1A power adapter to the "POWER" port on the rear of the M20. Plug the adapter into a wall outlet.
- USB povezava:
- For PCs, gaming consoles (PS4/PS5/Switch), tablets, or phones, connect a USB cable from your source device to the "USB" input port on the M20.
- USB 1.1 Mode (Driver-free): Ideal for gaming consoles and devices that do not require specific drivers. Audio output is limited to 16-bit/96kHz.
- USB 2.0 Mode (Driver Required for Windows): For high-resolution audio on Windows systems, a dedicated driver is required. This driver can typically be downloaded from the S.M.S.L official webmesto.

Image: The SMSL M20 connected to a PlayStation 5, Nintendo Switch, and a laptop, demonstrating its compatibility with various gaming and computing devices via USB 1.1 and USB 2.0 modes.
- Avdio izhodna povezava:
- Slušalke: Plug your headphones into either the 3.5mm or 4.4mm headphone output jack on the front panel.
- Zunanji AmpŽivljenjski slog/Zvočniki: Connect the "LINE Output" on the rear panel to your external amplifier or active speakers using an appropriate audio cable.

Image: The SMSL M20 connected to headphones, illustrating the 3.5mm and 4.4mm headphone outputs and their power delivery capabilities across different headphone impedances.
- Začetni vklop: Once all connections are secure, the device should power on.
Navodila za uporabo
Nadzor glasnosti
Uporabite Glasnost in Zmanjšanje glasnosti buttons on the front panel to adjust the audio output level.
Krmarjenje po meniju in nastavitve
Pritisnite Gumb za meni to access and navigate through the device's settings. Specific options may include input selection, filter modes, and other audio parameters. Refer to the on-screen display (if available) or LED indicators for current selections.
PCM Filter Modes
The M20 offers five PCM filter modes to customize your listening experience. These can be selected via the menu.
- F1 (Fast, low-latency): Suitable for applications requiring minimal delay, such as gaming.
- F2 (Fast, phase-compensated): Provides precise soundstage imaging.
- F3 (Slow, low-latency): Recommended for relaxed music listening.
- F4 (Slow, phase-compensated): Offers a specific sonic characteristic.
- F5 (Non-oversampling): Aims to reproduce the original recording's characteristics without digital oversampling.

Image: Visual representation of the five PCM filter modes (F1 to F5) on the SMSL M20, each designed for different audio preferences and scenarios.
MQA and MQA-CD Playback
The M20 supports MQA and MQA-CD decoding. When playing MQA content, the device will automatically detect and unfold the MQA stream, indicated by a specific LED color or display icon. This ensures you experience the full quality of master-level audio recordings.

Image: The SMSL M20 highlighting its MQA CD support and the multi-stage unfolding process of MQA audio files, which restores precise audio details.
Ambientalna osvetlitev
To toggle or change the ambient lighting, press the Zmanjšanje glasnosti in Glasnost gumba hkrati.
Vzdrževanje
- Čiščenje: Za čiščenje zunanjosti naprave uporabite mehko, suho krpo. Izogibajte se uporabi tekočih čistil ali abrazivnih materialov.
- Shranjevanje: Store the M20 in a cool, dry place away from direct sunlight and extreme temperatures.
- Ravnanje: Z napravo ravnajte previdno, da preprečite fizične poškodbe. Izogibajte se padcem ali močnim udarcem.
- Prezračevanje: Ensure adequate ventilation around the device to prevent overheating. Do not block any ventilation openings.
Odpravljanje težav
- Ni zvoka:
- Ensure the M20 is properly powered and connected to your source device via USB.
- Verify that your headphones or speakers are correctly connected to the M20's output ports.
- Check the volume level on both the M20 and your source device.
- Confirm that the correct audio output device (SMSL M20) is selected in your computer's or device's sound settings.
- Računalnik ne prepozna naprave:
- Ensure the USB cable is securely connected. Try a different USB port or cable.
- If using USB 2.0 mode on Windows, ensure the necessary drivers are installed. These are typically available on the S.M.S.L official webmesto.
- Restart your computer and the M20.
- Popačen ali slab zvok:
- Preverite izvorni zvok file kakovosti.
- Prepričajte se, da so vsi kabli varno priključeni in nepoškodovani.
- Try different PCM filter modes to see if it improves the sound.
- If using a high-impedance headphone, ensure the M20's amplifier is providing sufficient power.
- Težave s posodobitvijo vdelane programske opreme:
- Refer to the specific firmware update instructions provided by S.M.S.L. Firmware updates often require precise steps, such as specific button presses during the update process.
- Ensure a stable USB connection and power supply during the update.
- If issues persist, contact S.M.S.L customer support.
Specifikacije
| Znamka | SMSL |
| Model | M20 |
| DAC čip | 4x CS43131 |
| USB čip | XMOS XU-316 |
| Slušalka Amp čip | TPA6120A2 (x2) |
| Dekodiranje PCM | Do 32-bit/768 kHz |
| DSD dekodiranje | Do DSD256 |
| Podpora za MQA | Yes (MQA, MQA-CD) |
| Dinamični razpon | 119 dB |
| Popačenje (THD+N) | -115 dB (0.0001%) |
| Izhodi za slušalke | 3.5 mm, 4.4 mm |
| Line output | ja |
| USB vmesnik | USB 1.1 (driver-free), USB 2.0 (driver required for Windows) |
| Vhodna moč | DC 5V / 1A |
| Izvor | Kitajska |
Garancija in podpora
Informacije o garanciji
All S.M.S.L products purchased from authorized retailers come with a warranty period of 1 year or more from the date of purchase, depending on the specific product and regional regulations. Please retain your proof of purchase for warranty claims.
Podpora uporabnikom
S.M.S.L is committed to providing excellent products and services. If you have any questions, encounter issues, or require technical assistance, please contact S.M.S.L customer support. Online support is typically available 24 hours a day.
For further assistance, please visit the official S.M.S.L webali se obrnite na svojega prodajalca.