1. Introduktion
The S.M.S.L DS100 is a high-performance Digital-to-Analog Converter (DAC) and headphone amplifier designed to deliver exceptional audio quality. Featuring the Cirrus Logic CS43131 audio decoding chipset and a third-generation XMOS XU-316 USB processor, it supports MQA/MQA-CD decoding, PCM up to 32bit/768kHz, and DSD256. This compact device offers versatile connectivity with USB, optical, and coaxial inputs, alongside dual headphone outputs (6.35mm and 4.4mm) for a wide range of audio setups.
The DS100 is engineered with a dedicated audio clock processing circuit (CK-03) to minimize jitter and a high-efficiency, low-noise LDO power supply for stable performance. Its robust aluminum alloy casing, precision-machined using CNC technology, ensures durability and high-quality gold-plated input and output terminals for reliable connections.
2. Sikkerhedsoplysninger
- Skil ikke enheden ad.
- Udsæt ikke enheden for regn eller fugt.
- Undgå at placere enheden i nærheden af varmekilder eller i direkte sollys.
- Sørg for korrekt ventilation omkring enheden.
- Use only the specified power adapter (if applicable) to prevent damage.
3. Produktet er slutview
Nøglefunktioner
- High-performance MQA DAC with CS43131 chip, achieving 0.00017% (-115dB) distortion.
- USB DAC with third-generation XMOS XU-316 processor, supporting PCM up to 32bit/768kHz and DSD256.
- Integrated CK-03 clock processing circuit for reduced jitter.
- Multiple low-noise LDO power supplies for stable power delivery.
- Dual headphone outputs: 6.35mm single-ended and 4.4mm balanced.
- Compact design with CNC-machined aluminum alloy casing and gold-plated terminals.
Komponenter på for- og bagpanelet

This image displays the front and rear panels of the S.M.S.L DS100, detailing the location and function of each port and control. The front panel features headphone outputs and a control knob, while the rear panel includes various input and output connections.
- 6.35 mm hovedtelefonudgang: Standard hovedtelefonstik med én ende.
- 4.4 mm hovedtelefonudgang: Balanceret hovedtelefonstik.
- MQA Indicator Light: Illuminates when MQA content is detected.
- HP (Headphone Amplifier) Indicator Light: Indicates headphone output is active.
- Coaxial Input Light: Indicates coaxial input is selected.
- Optical Input Light: Indicates optical input is selected.
- USB Input Light: Indicates USB input is selected.
- Knop: Multi-function control for volume adjustment and input selection.
- USB-indgang: USB-C-port til tilslutning til en computer eller anden USB-lydkilde.
- Optisk indgang: Optical S/PDIF input.
- Koaksial indgang: Coaxial S/PDIF input.
- RCA-udgang: Analog RCA line outputs (Right and Left channels).

This image shows the front of the S.M.S.L DS100, highlighting its compact form factor, dual headphone jacks, and the multi-function control knob.

This image illustrates the S.M.S.L DS100 in a typical desktop environment, connected to a computer, emphasizing its small footprint and integration into an audio system.
4. Opsætning
4.1 Driverinstallation (Windows)
For Windows operating systems, a specific driver is required for optimal performance. Please download the latest driver from the official S.M.S.L website. Navigate to the 'Support' section, then 'Product Driver Download', and locate the DS100 driver. Follow the on-screen instructions for installation.
4.2 Tilslutning af lydkilder
- USB-indgang: Connect a USB-C cable from your computer or compatible audio source to the USB IN port (9) on the rear panel.
- Optisk indgang: Connect an optical cable from your audio source (e.g., TV, CD player) to the OPTICAL IN port (10).
- Koaksial indgang: Connect a coaxial cable from your audio source to the COAXIAL IN port (11).
4.3 Connecting Headphones and Amplivførere
- Hovedtelefoner: Plug your headphones into either the 6.35mm (1) or 4.4mm (2) headphone output jacks on the front panel. The DS100 provides sufficient power for a range of headphones, including 7 Vrms for 600 Ω high-impedance headphones and 61mW for 16 Ω low-impedance headphones.
- Ekstern Amplivligere: Til tilslutning til en ekstern amplifier or powered speakers, use RCA cables to connect the RCA OUTPUTS L/R (12) on the rear panel to your amplifiers indgange.
4.4 Tænd
The DS100 is typically powered via its USB connection. Once connected to a powered USB port, the device should automatically power on. Ensure all connections are secure before use.
5. Betjeningsvejledning
5.1 Indgangsvalg
The multi-function knob (8) on the front panel is used to select the input source. Rotate the knob to cycle through the available inputs: USB, Optical, and Coaxial. The corresponding indicator light (5, 6, or 7) will illuminate to show the currently selected input.
5.2 Lydstyrkekontrol
The knob (8) also controls the volume. Rotate the knob to adjust the output volume. When adjusting the volume, the four LED lights (HP, COAX, OPT, and USB) will temporarily indicate the current volume level.
5.3 MQA/MQA-CD-afspilning

This diagram illustrates how MQA technology works to clean up and encapsulate audio recordings, ensuring high-resolution playback. The DS100 supports full MQA decoding.

This image demonstrates how the DS100 supports MQA-CD playback. Your CD player's digital output (optical or coaxial) can be fed to the DS100, which will decode the MQA signal, restoring the original high-resolution audio as intended by the recording studio.
The DS100 is capable of decoding MQA (Master Quality Authenticated) audio files, which deliver the sound of the original master recording. When playing MQA content, the MQA indicator light (3) will illuminate. For MQA-CD playback, connect your CD player's digital output to the DS100's optical or coaxial input.
5.4 Headphone Output Selection
The DS100 features both 6.35mm single-ended and 4.4mm balanced headphone outputs. You can use either output depending on your headphone's connector type. Ensure your headphones are properly connected before playing audio.

This image highlights the dual headphone jack design of the S.M.S.L DS100, featuring both 4.4mm balanced and 6.35mm single-ended outputs, catering to various headphone types.
6. Vedligeholdelse
- Rengør enheden med en blød, tør klud. Brug ikke flydende rengøringsmidler eller aerosoler.
- Hold enheden fri for støv og snavs.
- Undgå ekstreme temperaturer og fugt.
7. Fejlfinding
- Ingen lydoutput:
- Check all cable connections (USB, optical, coaxial, headphones, RCA).
- Ensure the correct input source is selected on the DS100.
- Verify the volume level on both the DS100 and your audio source/computer.
- For Windows users, confirm the S.M.S.L USB DAC is selected as the default playback device in sound settings and that the correct sample rate is chosen.
- Forvrænget lyd:
- Check the quality of your audio source file.
- Ensure cables are not damaged or loosely connected.
- Reduce the volume if the distortion occurs at high levels.
- Windows Driver Issues:
- If the device is not recognized or functions incorrectly on Windows, ensure the latest driver is installed from the official S.M.S.L webwebsted.
- Try connecting the DS100 to a different USB port on your computer.
8. Specifikationer

This image provides a comprehensive table of the S.M.S.L DS100's technical specifications, including dimensions, input/output details, and performance metrics.
| Feature | Specifikation |
|---|---|
| Mærke | SMSL |
| Modelnummer | DS100 |
| Monteringstype | Standalone |
| Interface Type | Coaxial, Optical, USB |
| Antal kanaler | 2 |
| Produktdimensioner | 89 mm x 89 mm (ca. 3.5 mm x 3.5 mm) |
| Materiale | Aluminum, Gold |
| Varens vægt | 6.2 ounces (ca. 180 g) |
| Input | Optical/Coaxial/USB |
| Udgangsniveau | 2Vrms |
| THD+N | 0.00017 % (-115dB) |
| Dynamisk rækkevidde | 127dB |
| SNR | 127dB |
| USB-kompatibilitet | Windows 7/8/8.1/10/11 (needs Drivers), Mac OSX 10.6+, Linux (Driverless), Android |
| Strømforbrug | <1W |
| Standby strøm | <0.1W |
| USB SampLinghastighed og bitdybde | PCM 44.1-768kHz (32bit), DSD 2.8224-11.2896MHz (1bit), DoP 256 |
| Optisk/koaksial SampLinghastighed og bitdybde | PCM 44.1-192kHz (24bit), DoP 64 |

This image presents various graphs illustrating the measured performance of the S.M.S.L DS100, including distortion degree, dynamic range, signal-to-noise ratio (SNR), and frequency response, demonstrating its high fidelity audio capabilities.
9. Garanti og support
The S.M.S.L DS100 typically comes with a 1-year warranty from the date of purchase. For specific warranty details and terms, please refer to the documentation included with your product or contact S.M.S.L customer support.
S.M.S.L is committed to providing excellent customer service. For technical assistance, troubleshooting, or any product-related inquiries, 24-hour online service is available. Please visit the official S.M.S.L website for support resources, driver downloads, and contact information.
10. Produktvideo
Denne video giver et visuelt overblikview of the S.M.S.L DS100 USB MQA DAC and Headphone Ampløfter, showcasing its design, features, and how it integrates into an audio setup. It highlights the device's compact size and various connectivity options.





