SMSL D400 Pro HiFi MQA DAC User Manual

1. પરિચય

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. પેકેજ સામગ્રી

કૃપા કરીને તપાસો કે બધી વસ્તુઓ પેકેજમાં હાજર છે:

• 1 x SMSL D400 Pro Unit
• 1 x USB કેબલ
• 1 x રીમોટ કંટ્રોલ
• 1 x AC પાવર કેબલ
• ૧ x વપરાશકર્તા માર્ગદર્શિકા (આ દસ્તાવેજ)

3. ઉત્પાદન ઓવરview

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

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

મુખ્ય લક્ષણો:

• Dual DAC Chips: Equipped with AK4499EX and AK4191EQ DAC chips for superior audio processing.
• ઉચ્ચ-રીઝોલ્યુશન ઑડિઓ: 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: 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.
• બ્લૂટૂથ કનેક્ટિવિટી: Supports Qualcomm's high-end Bluetooth chip with LDAC (24bit/96kHz), aptX/HD, SBC, and AAC codecs.
• મજબૂત પાવર સપ્લાય: Multiple low-noise regulated power supplies ensure a stable and clean power system.
• પ્રીમિયમ બિલ્ડ: Fully laminated tempered glass display panel and high-quality gold-plated input/output terminals.

આકૃતિ 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.

આકૃતિ 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.

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

આકૃતિ 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).

આકૃતિ 3.6: એક આંતરિક 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.

આકૃતિ 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. સેટઅપ

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

1. પાવર કનેક્શન: Connect the supplied AC power cable to the D400 Pro's power input and then to a wall outlet.
2. ઇનપુટ સ્ત્રોત કનેક્શન: Choose your desired digital audio input:
   • યુએસબી: 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.
   • ઓપ્ટિકલ/કોક્સિયલ: 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.
   • બ્લૂટૂથ: 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. આઉટપુટ કનેક્શન: Connect the D400 Pro to your ampજીવંત અથવા સક્રિય વક્તાઓ:
   • આરસીએ આઉટપુટ: Use RCA cables to connect the D400 Pro's RCA outputs to the analog inputs of your ampજીવંત
   • XLR આઉટપુટ: Use balanced XLR cables to connect the D400 Pro's XLR outputs to the balanced inputs of your ampશ્રેષ્ઠ કામગીરી માટે લિફાયર.
4. પાવર ચાલુ: Press the power button on the front panel or remote control to turn on the D400 Pro.

5. ઓપરેટિંગ સૂચનાઓ

The D400 Pro offers intuitive controls for seamless audio playback.

5.1 Front Panel Controls:

• નિયંત્રણ નોબ: Rotate to adjust volume. Press to access the menu or confirm selections.
• ડિસ્પ્લે સ્ક્રીન: વર્તમાન ઇનપુટ બતાવે છે, sampling rate, volume level, and other status information.

૩.૩ રિમોટ કંટ્રોલ:

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

• પાવર બટન: એકમ ચાલુ/બંધ કરે છે.
• ઇનપુટ પસંદગી: Dedicated buttons or a cycle button to switch between USB, Optical, Coaxial, IIS, AES, and Bluetooth inputs.
• વોલ્યુમ અપ/ડાઉન: આઉટપુટ વોલ્યુમ એડજસ્ટ કરે છે.
• મ્યૂટ: Mutes/unmutes the audio output.
• મેનુ/સેટિંગ્સ: 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. સ્પષ્ટીકરણો

7. મુશ્કેલીનિવારણ

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

• કોઈ શક્તિ નથી:
  • 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.
• કોઈ સાઉન્ડ આઉટપુટ નથી:
  • 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 ampજીવંત
  • For USB input, ensure the necessary drivers are installed on your computer (for Windows).
  • Check the source device for proper playback and output settings.
• વિકૃત અવાજ:
  • ખાતરી કરો કે બધા કેબલ સુરક્ષિત રીતે જોડાયેલા છે અને ક્ષતિગ્રસ્ત નથી.
  • સ્રોત ઑડિઓ તપાસો file ગુણવત્તા
  • Reduce the volume level if clipping occurs.
• બ્લૂટૂથ કનેક્શન સમસ્યાઓ:
  • 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. જાળવણી

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

• સફાઈ: 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.
• પ્લેસમેન્ટ: Place the unit on a stable, flat surface with adequate ventilation. Avoid direct sunlight, heat sources, and areas with high humidity or dust.
• પાવર બંધ: When not in use for extended periods, it is recommended to power off the unit and disconnect it from the power outlet.
• પ્રવાહી ટાળો: Do not expose the unit to water or other liquids. If liquid enters the unit, immediately disconnect power and seek professional service.

9. વોરંટી અને સપોર્ટ

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.