1. 서론
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. 패키지 내용
패키지에 모든 품목이 들어 있는지 확인하세요.
- 1 x SMSL D400 Pro Unit
- 1 x USB 케이블
- 1 x 원격 제어
- 1 x AC 전원 케이블
- 1 x 사용자 매뉴얼(이 문서)
3. 제품 오버view
The SMSL D400 Pro is engineered for high-resolution audio playback, integrating advanced components and design principles.
그림 3.1: 앞쪽 view of the SMSL D400 Pro DAC, showcasing its sleek silver chassis, display screen, and control knob.
주요 특징:
- Dual DAC Chips: Equipped with AK4499EX and AK4191EQ DAC chips for superior audio processing.
- 고해상도 오디오: Supports PCM up to 32bit/768kHz and DSD512.
- MQA Full Decoding: Provides full MQA decoding for master quality audio playback, including MQA-CD support.
- 초저왜곡: 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.
- 고급 부품: 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.
- 블루투스 연결: Supports Qualcomm's high-end Bluetooth chip with LDAC (24bit/96kHz), aptX/HD, SBC, and AAC codecs.
- 견고한 전원 공급 장치: Multiple low-noise regulated power supplies ensure a stable and clean power system.
- 프리미엄 빌드: Fully laminated tempered glass display panel and high-quality gold-plated input/output terminals.
그림 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.
그림 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.
그림 3.4: 자세한 view of the XMOS XU-316 USB solution chip, emphasizing its support for DSD512 and PCM 32bit/768kHz.
그림 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).
그림 3.6: 내부 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.
그림 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. 설정
Follow these steps to connect your SMSL D400 Pro to your audio system:
- 전원 연결: Connect the supplied AC power cable to the D400 Pro's power input and then to a wall outlet.
- 입력 소스 연결: 원하는 디지털 오디오 입력을 선택하세요:
- 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.
- 광/동축: 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.
- 블루투스: Ensure the D400 Pro is powered on. On your source device (e.g., smartphone), enable Bluetooth and search for "SMSL D400 Pro" to pair.
- 출력 연결: Connect the D400 Pro to your amp리파이어 또는 액티브 스피커:
- RCA 출력 : Use RCA cables to connect the D400 Pro's RCA outputs to the analog inputs of your amp리퍼.
- XLR 출력 : Use balanced XLR cables to connect the D400 Pro's XLR outputs to the balanced inputs of your amp최적의 성능을 위한 리파이어.
- 전원 켜기: Press the power button on the front panel or remote control to turn on the D400 Pro.
5. 사용 설명서
The D400 Pro offers intuitive controls for seamless audio playback.
5.1 전면 패널 컨트롤:
- 컨트롤 노브: Rotate to adjust volume. Press to access the menu or confirm selections.
- 디스플레이 화면: 현재 입력을 표시합니다.ampling rate, volume level, and other status information.
5.2 원격 제어:
함께 제공되는 리모컨을 사용하면 멀리서도 편리하게 모든 기능을 조작할 수 있습니다.
- 전원 버튼: 기기를 켜거나 끕니다.
- 입력 선택: Dedicated buttons or a cycle button to switch between USB, Optical, Coaxial, IIS, AES, and Bluetooth inputs.
- 볼륨 높이기/낮추기: 출력 볼륨을 조정합니다.
- 무음: Mutes/unmutes the audio output.
- 메뉴/설정: Accesses various settings such as digital filters, display brightness, and output modes.
5.3 Playback:
- Select the desired input source using the front panel knob or remote control.
- Start playback from your connected source device.
- Adjust the volume to your preferred listening level.
- The display will show the current sampling rate and MQA status (if applicable).
6. 사양
| 특징 | 사양 |
|---|---|
| 입력 | USB / Optical / Coaxial / IIS / AES |
| 산출 | RCA / XLR |
| 출력 레벨 | XLR: 5Vrms, RCA: 2.5Vrms |
| 출력 임피던스 | XLR: 200Ω, RCA: 100Ω |
| 총 고조파 왜곡률 + N | XLR: 0.00006% (-124dB) (UN-WTD), RCA: 0.00008% (-121dB) (UN-WTD) |
| 다이나믹 레인지 | XLR: 132dB, RCA: 126dB |
| 신호대잡음비 | XLR: 132dB, RCA: 126dB |
| USB 전송 | 비 동기화 |
| USB 호환성 | Windows 7/8/8.1/10/11 (needs driver), Mac OS, Linux |
| MQA 디코더 | USB / 광 / 동축 |
| MQA-CD 디코더 | 광/동축 |
| Sampling Rate (USB/I2S) | PCM: 44.1~768KHz, DSD: 2.8224~22.5792MHz (DSD512) |
| Sampling Rate (Optical/Coaxial) | PCM: 44.1~192kHz |
| 블루투스 지원 | LDAC(24비트/96kHz), aptX/HD, SBC, AAC |
| 전력 소비 | <10W |
| 대기 전력 | <0.5W |
| 치수(폭x높이x깊이) | 254 x 189 x 46mm (10 x 7.44 x 1.81 inches) |
| 무게 | 1.5kg(3.31파운드) |
7. 문제 해결
If you encounter issues with your D400 Pro, refer to the following common problems and solutions:
- 전원 없음:
- 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.
- 사운드 출력 없음:
- D400 Pro에서 올바른 입력 소스가 선택되었는지 확인하십시오.
- 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 amp리퍼.
- For USB input, ensure the necessary drivers are installed on your computer (for Windows).
- Check the source device for proper playback and output settings.
- 왜곡된 소리:
- 모든 케이블이 안전하게 연결되었고 손상되지 않았는지 확인하세요.
- Check the source audio file 품질.
- Reduce the volume level if clipping occurs.
- 블루투스 연결 문제:
- 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. 유지관리
To ensure the longevity and optimal performance of your SMSL D400 Pro, follow these maintenance guidelines:
- 청소: 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.
- 놓기: Place the unit on a stable, flat surface with adequate ventilation. Avoid direct sunlight, heat sources, and areas with high humidity or dust.
- 전원 끄기 : 장시간 사용하지 않을 경우, 기기의 전원을 끄고 전원 콘센트에서 분리하는 것이 좋습니다.
- 액체를 피하세요: Do not expose the unit to water or other liquids. If liquid enters the unit, immediately disconnect power and seek professional service.
9. 보증 및 지원
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.