SMSL D400 Pro HiFi MQA DAC User Manual

1. Einleitung

The SMSL D400 Pro is a high-fidelity Digital-to-Analog Converter (DAC) designed for discerning audio enthusiasts. It features advanced AK4499EX and AK4191EQ DAC chips, MQA full decoding capabilities, and a low-distortion design to deliver exceptional sound quality. This manual provides essential information for setting up, operating, and maintaining your D400 Pro.

2. Packungsinhalt

Bitte überprüfen Sie, ob alle Artikel im Paket vorhanden sind:

• 1 x SMSL D400 Pro Unit
• 1 x USB-Kabel
• 1 x Fernbedienung
• 1 x AC-Stromkabel
• 1 x Benutzerhandbuch (dieses Dokument)

3. Produktüberschreitungview

The SMSL D400 Pro is engineered for high-resolution audio playback, integrating advanced components and design principles.

Abbildung 3.1: Front view of the SMSL D400 Pro DAC, showcasing its sleek silver chassis, display screen, and control knob.

Hauptmerkmale:

• Dual DAC Chips: Equipped with AK4499EX and AK4191EQ DAC chips for superior audio processing.
• Hochauflösendes Audio: Supports PCM up to 32bit/768kHz and DSD512.
• MQA-Volldekodierung: Provides full MQA decoding for master quality audio playback, including MQA-CD support.
• Extrem geringe Verzerrung: Achieves distortion as low as 0.00006% (-124dB) for clear and accurate sound.
• XMOS XU-316 USB Solution: Utilizes the latest 3rd generation XMOS USB solution for stable and efficient data transfer.
• Hochwertige Komponenten: Features 5 high-end dual op-amps and audiophile-grade components.
• Advanced Clock Processing: Incorporates a self-developed CK-03 clock processing circuit to reduce jitter.
• Bluetooth-Konnektivität: Supports Qualcomm's high-end Bluetooth chip with LDAC (24bit/96kHz), aptX/HD, SBC, and AAC codecs.
• Robustes Netzteil: Multiple low-noise regulated power supplies ensure a stable and clean power system.
• Premium-Build: Fully laminated tempered glass display panel and high-quality gold-plated input/output terminals.

Abbildung 3.2: An infographic highlighting the key features of the D400 Pro, including DAC chips, MQA support, low distortion, XMOS USB, DSD, PCM, and remote control.

Abbildung 3.3: Illustration explaining MQA CD support, showing how a CD player's digital output can be fed to the D400 Pro for MQA decoding, restoring original high-resolution audio.

Abbildung 3.4: Eine detaillierte view of the XMOS XU-316 USB solution chip, emphasizing its support for DSD512 and PCM 32bit/768kHz.

Abbildung 3.5: Close-up of the AK4191 and AK4499EX flagship DAC chips, along with a graph illustrating the D400 Pro's low distortion performance at 0.00006% (-124dB).

Abbildung 3.6: Eine interne view highlighting the 5 high-end dual op-amps, the CK-03 clock processing circuit, built-in low-noise power processing, and high-quality gold-plated input/output connection terminals.

Abbildung 3.7: Depiction of the D400 Pro's Bluetooth functionality, showing a smartphone streaming audio wirelessly with support for LDAC, aptX/HD, SBC, and AAC codecs within a 0-15m effective distance.

4. Einrichtung

Follow these steps to connect your SMSL D400 Pro to your audio system:

1. Stromanschluss: Connect the supplied AC power cable to the D400 Pro's power input and then to a wall outlet.
2. Anschluss der Eingangsquelle: Choose your desired digital audio input:
   • USB: Connect the USB cable from your computer (Windows 7/8/8.1/10/11 requires driver installation) or other USB audio source to the D400 Pro's USB input.
   • Optisch/Koaxial: Connect an optical or coaxial cable from your source device (e.g., CD player, TV) to the corresponding input on the D400 Pro.
   • IIS/AES: For advanced users, connect compatible sources to the IIS or AES inputs.
   • Bluetooth: Ensure the D400 Pro is powered on. On your source device (e.g., smartphone), enable Bluetooth and search for "SMSL D400 Pro" to pair.
3. Ausgangsanschluss: Connect the D400 Pro to your ampVerstärker oder Aktivlautsprecher:
   • Cinch-Ausgang: Use RCA cables to connect the D400 Pro's RCA outputs to the analog inputs of your ampschwerer.
   • XLR-Ausgang: Use balanced XLR cables to connect the D400 Pro's XLR outputs to the balanced inputs of your amplifier für optimale Leistung.
4. Einschalten: Press the power button on the front panel or remote control to turn on the D400 Pro.

5. Bedienungsanleitung

The D400 Pro offers intuitive controls for seamless audio playback.

5.1 Front Panel Controls:

• Der Reglerknopf: Rotate to adjust volume. Press to access the menu or confirm selections.
• Bildschirm: Zeigt den aktuellen Eingang s an.ampling rate, volume level, and other status information.

5.2 Fernbedienung:

Die mitgelieferte Fernbedienung bietet volle Funktionalität für eine bequeme Bedienung aus der Ferne.

• Netzschalter: Schaltet das Gerät ein/aus.
• Eingangsauswahl: Dedicated buttons or a cycle button to switch between USB, Optical, Coaxial, IIS, AES, and Bluetooth inputs.
• Lautstärke erhöhen/verringern: Passt die Ausgabelautstärke an.
• Stumm: Schaltet die Audioausgabe stumm/hebt die Stummschaltung auf.
• Menü/Einstellungen: Accesses various settings such as digital filters, display brightness, and output modes.

5.3 Playback:

1. Select the desired input source using the front panel knob or remote control.
2. Start playback from your connected source device.
3. Stellen Sie die Lautstärke auf Ihre bevorzugte Hörlautstärke ein.
4. The display will show the current sampling rate and MQA status (if applicable).

6. Spezifikationen

7. Fehlerbehebung

If you encounter issues with your D400 Pro, refer to the following common problems and solutions:

• Kein Strom:
  • Ensure the AC power cable is securely connected to both the D400 Pro and a working power outlet.
  • Check if the power button on the front panel or remote control has been pressed.
• Keine Tonausgabe:
  • Verify that the correct input source is selected on the D400 Pro.
  • Check the volume level on the D400 Pro and your amplifier/active speakers. Ensure the D400 Pro is not muted.
  • Confirm that the RCA or XLR cables are correctly connected between the D400 Pro and your ampschwerer.
  • For USB input, ensure the necessary drivers are installed on your computer (for Windows).
  • Check the source device for proper playback and output settings.
• Verzerrter Klang:
  • Stellen Sie sicher, dass alle Kabel fest angeschlossen und nicht beschädigt sind.
  • Check the source audio file Qualität.
  • Reduce the volume level if clipping occurs.
• Probleme mit der Bluetooth-Verbindung:
  • Ensure the D400 Pro is in Bluetooth input mode.
  • Make sure the source device is within the effective Bluetooth range (0-15m).
  • Try unpairing and re-pairing the D400 Pro from your source device's Bluetooth settings.

8. Wartung

To ensure the longevity and optimal performance of your SMSL D400 Pro, follow these maintenance guidelines:

• Reinigung: Reinigen Sie die Außenseite des Geräts mit einem weichen, trockenen Tuch. Vermeiden Sie die Verwendung von Scheuermitteln, Lösungsmitteln oder chemischen Sprays, da diese die Oberfläche beschädigen können.
• Platzierung: Place the unit on a stable, flat surface with adequate ventilation. Avoid direct sunlight, heat sources, and areas with high humidity or dust.
• Ausschalten: Bei längerer Nichtbenutzung wird empfohlen, das Gerät auszuschalten und vom Stromnetz zu trennen.
• Vermeiden Sie Flüssigkeiten: Do not expose the unit to water or other liquids. If liquid enters the unit, immediately disconnect power and seek professional service.

9. Garantie und Support

The SMSL D400 Pro is manufactured by SMSL and sold by AOSHIDA. For warranty information and technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your purchase receipt as proof of purchase for warranty claims.

For further assistance, you may visit the AOSHIDA store on Amazon or contact their customer service directly.