SMSL D400 Pro HiFi MQA DAC User Manual

1. Танилцуулга

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. Багцын агуулга

Бүх зүйл багцад байгаа эсэхийг шалгана уу:

• 1 x SMSL D400 Pro Unit
• 1 x USB кабель
• 1 x Алсын удирдлага
• 1 x хувьсах гүйдлийн цахилгаан кабель
• 1 х хэрэглэгчийн гарын авлага (энэ баримт бичиг)

3. Бүтээгдэхүүн дууссанview

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

Зураг 3.1: Урд view SMSL D400 Pro DAC-ийн, шоуasing its sleek silver chassis, display screen, and control knob.

Гол онцлогууд:

• Dual DAC Chips: Equipped with AK4499EX and AK4191EQ DAC chips for superior audio processing.
• Өндөр нягтралтай аудио: Supports PCM up to 32bit/768kHz and DSD512.
• MQA Full Decoding: Provides full MQA decoding for master quality audio playback, including MQA-CD support.
• Ultra-Low Distortion: 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.
• High-End Components: 5 өндөр зэрэглэлийн хос функцтэйamps and audiophile-grade components.
• Advanced Clock Processing: Incorporates a self-developed CK-03 clock processing circuit to reduce jitter.
• Bluetooth холболт: Supports Qualcomm's high-end Bluetooth chip with LDAC (24bit/96kHz), aptX/HD, SBC, and AAC codecs.
• Бат бөх цахилгаан хангамж: Multiple low-noise regulated power supplies ensure a stable and clean power system.
• Дээд зэрэглэлийн бүтэц: Fully laminated tempered glass display panel and high-quality gold-plated input/output terminals.

Зураг 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.

Зураг 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.

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

Зураг 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).

Зураг 3.6: Дотоод 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.

Зураг 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. Тохиргоо

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

1. Эрчим хүчний холболт: Connect the supplied AC power cable to the D400 Pro's power input and then to a wall outlet.
2. Оролтын эх үүсвэрийн холболт: 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.
   • Оптик/Коаксиаль: 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. Гаралтын холболт: Connect the D400 Pro to your amplifier or active speakers:
   • RCA гаралт: Use RCA cables to connect the D400 Pro's RCA outputs to the analog inputs of your ampнастан.
   • XLR гаралт: Use balanced XLR cables to connect the D400 Pro's XLR outputs to the balanced inputs of your ampоновчтой гүйцэтгэлд зориулсан өргөгч.
4. Асаах: Press the power button on the front panel or remote control to turn on the D400 Pro.

5. Ашиглалтын заавар

The D400 Pro offers intuitive controls for seamless audio playback.

5.1 Front Panel Controls:

• Хяналтын товчлуур: Rotate to adjust volume. Press to access the menu or confirm selections.
• Дэлгэц: Одоогийн оролтыг харуулна, сampling rate, volume level, and other status information.

5.2 Алсын удирдлага:

The included remote control provides full functionality for convenient operation from a distance.

• Цахилгаан товч: Төхөөрөмжийг асаах/унтраах.
• Оролтын сонголт: Dedicated buttons or a cycle button to switch between USB, Optical, Coaxial, IIS, AES, and Bluetooth inputs.
• Дууны хэмжээг нэмэгдүүлэх/доошруулах: Гаралтын хэмжээг тохируулна.
• Дууг хаах: Mutes/unmutes the audio output.
• Цэс/Тохиргоо: 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. Adjust the volume to your preferred listening level.
4. The display will show the current sampling rate and MQA status (if applicable).

6. Техникийн үзүүлэлтүүд

7. Алдаа засах

Хэрэв та D400 Pro-той холбоотой асуудалтай тулгарвал дараах нийтлэг асуудал, шийдлүүдийг үзнэ үү.

• Эрчим хүчгүй:
  • 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.
• Дууны гаралт байхгүй:
  • 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 ampнастан.
  • For USB input, ensure the necessary drivers are installed on your computer (for Windows).
  • Check the source device for proper playback and output settings.
• Гажуудсан дуу:
  • Бүх кабель найдвартай холбогдсон, гэмтээгүй эсэхийг шалгаарай.
  • Check the source audio file чанар.
  • Reduce the volume level if clipping occurs.
• Bluetooth холболтын асуудал:
  • 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. Засвар үйлчилгээ

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

• Цэвэрлэгээ: Use a soft, dry cloth to clean the exterior of the unit. Avoid using abrasive cleaners, solvents, or chemical sprays, as they may damage the finish.
• Байршил: Place the unit on a stable, flat surface with adequate ventilation. Avoid direct sunlight, heat sources, and areas with high humidity or dust.
• Унтраах: When not in use for extended periods, it is recommended to power off the unit and disconnect it from the power outlet.
• Шингэнээс зайлсхийх: Do not expose the unit to water or other liquids. If liquid enters the unit, immediately disconnect power and seek professional service.

9. Баталгаат хугацаа ба дэмжлэг

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.