1. Įvadas
Thank you for choosing the S.M.S.L DL400 Audio DAC & Headphone Amplifier. This device is designed to deliver high-fidelity audio performance, featuring advanced decoding capabilities and a powerful balanced headphone amplifier. Please read this manual thoroughly to ensure proper setup and operation.
2. Saugos informacija
- Neardykite ir nemodifikuokite įrenginio.
- Laikykite įrenginį atokiau nuo vandens, drėgmės ir tiesioginių saulės spindulių.
- Užtikrinkite tinkamą vėdinimą, kad išvengtumėte perkaitimo.
- Naudokite tik pateiktą maitinimo adapterį.
- Nedėkite ant įrenginio sunkių daiktų.
- Atjunkite įrenginį žaibuojant arba kai nenaudojate ilgą laiką.
3. Pakuotės turinys
Patikrinkite, ar pakuotėje yra visi reikalingi daiktai:
- S.M.S.L DL400 Audio DAC & Headphone Ampgyvybingesnis
- Greitos pradžios vadovas
- Nuotolinio valdymo pultelis
- Maitinimo kabelis
- USB kabelis
- Bluetooth antena
4. Produktas baigtasview
4.1 Priekinis skydelis
The front panel features essential controls and headphone outputs.

Image: The front panel of the S.M.S.L DL400, highlighting the 6.35mm headphone port and 4.4mm balanced headphone port, along with power output specifications for 16Ω and 300Ω loads.
- 6.35 mm ausinių lizdas: Standard single-ended headphone output.
- 4.4mm Balanced Headphone Jack: Balanced headphone output for enhanced audio quality.
- Ekranas: Shows current input, volume, sample rate, and menu options.
- Rankenėlė: Daugiafunkcis valdymas garsumui reguliuoti ir meniu naršymui.
4.2 Galinis skydelis
The rear panel provides various input and output connections.

Paveikslėlis: detalus view of the S.M.S.L DL400's rear panel, illustrating all available input and output ports including XLR, RCA, AES/EBU, Coaxial, Optical, I2S, USB, Bluetooth Antenna, and Power Input.
- XLR subalansuotas išėjimas: Professional balanced analog audio output.
- RCA išvestis: Standard single-ended analog audio output.
- AES/EBU Input: Profesionali skaitmeninio garso įvestis.
- Koaksialinė įvestis: Digital audio input via coaxial cable.
- Optinė įvestis: Digital audio input via optical fiber.
- I2S Input: High-performance digital audio input, often used with dedicated audio transports.
- USB įvestis: Prijungiamas prie kompiuterio ar kito USB garso šaltinio.
- „Bluetooth“ antena: For wireless audio reception.
- Maitinimo įvestis: Jungiamas prie kintamosios srovės maitinimo šaltinio.
5. Sąranka
5.1 Maitinimo prijungimas
- Ensure the DL400 is switched off.
- Connect the provided power cable to the power input on the rear panel.
- Kitą maitinimo laido galą prijunkite prie tinkamo kintamosios srovės lizdo.
5.2 Garso šaltinių prijungimas
Pasirinkite vieną iš šių būdų, kaip prijungti garso šaltinį:
- USB: Connect a computer or digital audio player to the USB input using a USB cable.
- Optinis/koaksialinis: Connect a CD player, TV, or game console to the Optical or Coaxial input.
- AES/EBU: For professional audio equipment, connect to the AES/EBU input.
- I2S: Connect compatible I2S sources. Refer to the image below for I2S interface standards.

Image: Diagram illustrating normal and reversed I2S pin definitions, as well as normal and inverted XLR pin configurations, for professional interface compatibility.
- Bluetooth: Screw the Bluetooth antenna onto its connector on the rear panel.
5.3 Ausinių prijungimas
Prijunkite ausines prie 6.35 mm arba 4.4 mm subalansuoto ausinių lizdo priekiniame skydelyje.
5.4 Prijungimas prie Amplifier/garsiakalbiai
If using the DL400 as a DAC for an external amplifier arba aktyvūs garsiakalbiai:
- RCA: Connect the RCA outputs to your amplifier's analog inputs using RCA cables.
- XLR: Connect the XLR balanced outputs to your amplifier's balanced inputs using XLR cables.
6. Naudojimo instrukcijos
6.1 Maitinimo įjungimas/išjungimas
Toggle the power switch on the rear panel to turn the unit on or off. The front display will illuminate upon power-on.
6.2 Įvesties pasirinkimas
Rotate the front panel knob or use the remote control to cycle through available input sources (USB, Optical, Coaxial, AES/EBU, I2S, Bluetooth).
6.3 Garsumo valdymas
Rotate the front panel knob clockwise to increase volume and counter-clockwise to decrease it. The volume level is displayed on the screen. Alternatively, use the volume buttons on the remote control.
6.4 Nuotolinio valdymo pulto funkcijos
The included remote control provides convenient access to various functions.

Image: The infrared remote control for the S.M.S.L DL400, showing buttons for power, navigation, menu, input switching, mute, volume, and customizable FN key. It also highlights adjustable display brightness.
- ĮJUNGTA/IŠJUNGTA: Įjunkite / išjunkite įrenginį.
- Back/Previous Track: Navigate back or to the previous track (for supported sources).
- Up Select / Play/Pause: Navigate up in menus or play/pause audio.
- Enter/Exit Menu: Access or exit the menu.
- Enter Submenu / Next Track: Enter a submenu or skip to the next track.
- Pasirinkite žemyn: Navigate down in menus.
- Perjungti įvestį: Cycle through input sources.
- Nutildyti: Nutildyti / įjungti garsą.
- FN klavišas: Customizable function key.
- Garsumo didinimas / sumažinimas: Sureguliuokite garsumą.
6.5 Meniu naršymas ir nustatymai
Press the knob or the 'Enter' button on the remote to access the main menu. Rotate the knob or use the up/down buttons to navigate, and press to select.
- PCM filtrai: The DL400 offers various PCM digital filters to tailor the sound to your preference. Experiment with options like Linear Fast, Minimum Fast, Linear Slow, Minimum Slow, Apodizing, Minimum Phase, and Low Dispersion.

Image: The S.M.S.L DL400 display showing PCM filter options and a frequency spectrum graph illustrating the characteristics of different filter types (Linear Fast, Minimum Fast, Linear Slow, Minimum Slow, Apodizing, Minimum Phase, Low Dispersion).
- Sound Color: Adjust the tonal characteristics of the audio output.
- DPLL Functionality: Digital Phase-Locked Loop settings. If audio interruptions occur due to poor clock stability, increasing the DPLL value (from 1-15, default is 5) can help.
- Ekrano ryškumas: Adjust the brightness of the front display (6 levels available).
6.6 MQA Decoding
The DL400 supports full MQA decoding, allowing you to experience Master Quality Authenticated audio files at their highest resolution.

Image: Explains MQA (Master Quality Authenticated) full decoding support on the DL400, showing the MQA logo and a visual representation of 'Music Origami' for high-resolution audio.
7. Priežiūra
- Prietaisą valykite minkštu, sausu skudurėliu. Nenaudokite skystų valiklių ar aerozolių.
- Laikykite ventiliacijos angas švarias nuo dulkių ir šiukšlių.
- Kai prietaisas ilgą laiką nenaudojamas, laikykite jį vėsioje, sausoje vietoje.
8. Problemų sprendimas
| Problema | Galima priežastis | Sprendimas |
|---|---|---|
| Nėra galios | Maitinimo laidas neprijungtas; Maitinimo jungiklis išjungtas | Check power cable connection; Turn on power switch |
| Nėra garso išvesties | Incorrect input selected; Volume too low; Muted; Cables loose | Select correct input; Increase volume; Unmute; Check all audio cable connections |
| Iškraipytas garsas | Source issue; Incorrect sample rate; Faulty cable | Check audio source; Verify sample rate settings; Replace cables |
| Bluetooth neprisijungia | Antenna not connected; Device not in pairing mode; Interference | Ensure Bluetooth antenna is connected; Put DL400 and device in pairing mode; Reduce distance or interference |
| Nuotolinio valdymo pultas neveikia | Batteries dead; Obstruction; Out of range | Replace batteries; Remove obstructions; Operate within range |
9. Specifikacijos
| Funkcija | Specifikacija |
|---|---|
| DAC lustas | ES9039MSPRO |
| USB procesorius | XMOS XU-316 (3rd Generation) |
| PCM palaikymas | Iki 32 bitų / 768 kHz |
| DSD palaikymas | DSD512 (Hard Decoding), DSD256 (Native) |
| Headphone Output Power (32Ω) | 3000 mW x 2 |
| Headphone Output Power (300Ω) | 700mW |
| Įėjimai | USB, Optical, Coaxial, AES/EBU, I2S, Bluetooth |
| Išėjimai | RCA, XLR, 6.35mm Headphone, 4.4mm Balanced Headphone |
| Bluetooth versija | 5.1 |
| Bluetooth kodekai | aptX, aptX HD, LDAC, AAC, SBC |
| MQA Support | Visas MQA dekodavimas |
| Matmenys (P x G x A) | 250 mm x 240 mm x 47 mm (apytiksliai 9.84 x 9.45 x 1.85 colio) |
| Prekės svoris | 4.4 svaro (apie 2 kg) |
10. Garantija ir palaikymas
The S.M.S.L DL400 comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package or visit the official S.M.S.L websvetainėje, kurioje pateikiamos išsamios garantijos sąlygos.
For technical support, troubleshooting assistance, or service inquiries, please contact your retailer or the official S.M.S.L customer support channels.