1. Introducció
The S.M.S.L DL300 is a high-performance audio decoder and headphone amplifier designed to deliver exceptional sound quality. It incorporates advanced AK4499EX and AK4191 chips for precise digital-to-analog conversion and features a powerful headphone amplifier circuit. This manual provides detailed instructions for the proper setup, operation, and maintenance of your DL300 unit.
2. Característiques clau
- AK4499EX + AK4191 Chipset: Utilizes a new stereo chip combination from AKM, offering excellent noise and THD characteristics, with complete separation of digital and analog signals for detailed sound reproduction.
- High-Power Headphone Output: Features 6.35mm and 4.4mm headphone jacks with a PLFC headphone amplifier circuit, providing two gain adjustable levels for various headphone impedances.
- Advanced PCM Filters and Tones: Offers 6 types of PCM filters and 4 tone options to customize the audio output according to user preference.
- Suport d'àudio d'alta resolució: Supports PCM playback up to 32bit/768kHz and hard decoding of DSD512.
- XMOS XU-316 Processor: Equipped with the third-generation XMOS XU-316 for robust USB audio processing.
- Extensive Input/Output: USB, Optical, Coaxial, and I²S inputs support DSD transmission. Coaxial and Optical inputs also support DOP64.
- Connectivitat Bluetooth: Integrates the QCC5125 Bluetooth chip with an external antenna, supporting LDAC and apt-X HD for high-quality wireless audio streaming.
Figure 2.1: Internal AK4499EX and AK4191 Chipset for Digital/Analog Signal Separation.
Figura 2.2: Mésview of DL300's core technologies and supported audio formats.
3. Contingut del paquet
Si us plau, comproveu que tots els elements siguin presents al paquet:
- S.M.S.L DL300 Main Unit
- Power Cable (with various plug adapters)
- Cable USB (tipus C)
- Control remot
- Antena Bluetooth
- Manual d'usuari
Figure 3.1: Included accessories with the S.M.S.L DL300.
4. Controls i interfícies
4.1 Tauler frontal
Figura 4.1: Panell frontalview.
- Pantalla de visualització: Mostra l'entrada actual, sample rate, volume, and menu options.
- Presa d'auriculars de 6.35 mm: Sortida estàndard d'auriculars d'una sola terminació.
- Presa d'auriculars de 4.4 mm: Balanced headphone output.
- Pom multifunció: Controls power, volume, input selection, and menu navigation.
4.2 Panell posterior
Figura 4.2: Connexions del panell posterior.
- XLR Balanced Outputs (L/R): Per connectar a un sistema balancejat ampaltaveus o altaveus actius.
- RCA Unbalanced Outputs (L/R): For connecting to unbalanced ampaltaveus o altaveus actius.
- Entrada coaxial: Entrada d'àudio digital.
- Entrada òptica: Entrada d'àudio digital.
- I²S Input (HDMI): High-performance digital audio input.
- Entrada USB: Per connectar-lo a un ordinador o a una altra font d'àudio USB.
- Connector d'antena Bluetooth: Per connectar l'antena Bluetooth inclosa.
- Entrada d'alimentació de CA: Per connectar el cable d'alimentació.
4.3 Control remot
Figure 4.3: Remote Control Functions.
- ON/OFF: Power on or off the unit.
- Tornada: Tornar al menú anterior.
- Select Up/Down: Navega per les opcions del menú.
- Menú d'entrada/sortida: Access or exit the main menu.
- Enter Secondary Menu: Access sub-menus.
- Interruptor d'entrada: Cycle through available input sources.
- Silenciar: Mute or unmute audio output.
- Tecla FN: Customizable function key.
- Augment/disminució del volum: Ajusteu el volum de sortida.
5. Configuració
- Connectar l'alimentació: Connect the provided power cable to the AC power input on the rear panel and then to a suitable power outlet.
- Connecteu l'antena Bluetooth: Screw the Bluetooth antenna onto its connector on the rear panel.
- Connecta la font d'àudio: Choose your desired audio input (USB, Optical, Coaxial, I²S) and connect your source device to the corresponding input on the DL300 rear panel. For USB connection, use the provided USB Type-C cable.
- Connect Output Device:
- For headphones, plug your headphones into either the 6.35mm or 4.4mm jack on the front panel.
- Per a exteriors amplifiers or active speakers, connect the DL300's XLR or RCA outputs to your receiving equipment.
- Encès: Press the power button on the remote control or the multi-function knob on the front panel to turn on the DL300.
6. Instruccions de funcionament
6.1 Funcionament bàsic
- Control de volum: Rotate the multi-function knob on the front panel or use the Volume +/- buttons on the remote control to adjust the output volume.
- Selecció d'entrada: Press the multi-function knob or the 'Switch Input' button on the remote to cycle through available input sources (USB, Optical, Coaxial, I²S, Bluetooth).
- Silenciar: Press the 'Mute' button on the remote control to temporarily silence the audio output.
6.2 Navegació de menús
Press the multi-function knob or the 'Enter/Exit Menu' button on the remote to access the main menu. Use the Up/Down buttons to navigate and the 'Enter' button to select options. The 'Return' button exits the current menu level.
6.3 PCM Filters and Tones
The DL300 offers various PCM filters and tone settings to fine-tune the sound. These can be accessed through the menu. Experiment with different settings to find your preferred audio characteristics.
Figure 6.1: PCM Filter Characteristics.
6.4 Vinculació Bluetooth
- Select Bluetooth as the input source on the DL300. The display will show 'BT' and indicate pairing mode.
- Al dispositiu mòbil o a l'ordinador, activeu el Bluetooth i cerqueu els dispositius disponibles.
- Select 'S.M.S.L DL300' from the list of devices to pair.
- Once paired, the DL300 display will confirm the connection, and you can stream audio wirelessly.
Figure 6.2: Bluetooth Connectivity Features.
6.5 Headphone Output Gain
The headphone output has adjustable gain settings. This can be configured in the system menu to match the impedance and sensitivity of your headphones, ensuring optimal performance and preventing distortion.
Figure 6.3: Headphone Output Details.
7. Manteniment
- Neteja: Use a soft, dry cloth to clean the exterior of the unit. Avoid using abrasive cleaners or solvents.
- Ventilació: Ensure the unit has adequate ventilation. Do not block the ventilation holes.
- Medi ambient: Keep the unit away from direct sunlight, heat sources, excessive dust, moisture, and strong electromagnetic fields.
- Apagar: Apagueu sempre la unitat abans de desconnectar cables o moure-la.
8. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Power cable not connected; Power outlet faulty; Unit switched off. | Check power cable connection; Try a different outlet; Press power button on unit or remote. |
| Sense sortida de so | Incorrect input selected; Volume too low; Output device not connected; Mute function active. | Select correct input; Increase volume; Check headphone/speaker connections; Deactivate mute. |
| Problemes de connexió Bluetooth | DL300 not in pairing mode; Device not found; Interference. | Ensure DL300 is in Bluetooth input mode; Restart Bluetooth on both devices; Move closer to the unit. |
| Àudio distorsionat | Volume too high; Incorrect gain setting for headphones; Faulty cable. | Reduce volume; Adjust headphone gain in menu; Try a different audio cable. |
9. Especificacions
| Característica | Detall |
|---|---|
| Dimensions del producte | 8.74 x 8.15 x 1.54 polzades (222 x 207 x 39 mm) |
| Pes de l'article | 3.3 lliures |
| Chipset DAC | AK4499EX + AK4191 |
| Processador USB | XMOS XU-316 (3rd Generation) |
| Suport PCM | Fins a 32 bits/768 kHz |
| DSD Support | Up to DSD512 (Native), DOP64 (Coaxial, Optical) |
| MQA Support | Full MQA Decoding, MQA-CD |
| Versió Bluetooth | QCC5125 (Supports LDAC, apt-X HD) |
| Sortides d'auriculars | 6.35mm (Single-ended), 4.4mm (Balanced) |
| Sortides analògiques | XLR (Balanced), RCA (Unbalanced) |
| Entrades digitals | USB, Optical, Coaxial, I²S (HDMI) |
| THD+N | As low as 0.00006% (-124dB) |
Figure 9.1: THD+N Performance Data.
Figure 9.2: Signal to Noise Ratio Performance Data.
Figure 9.3: Dynamic Range Performance Data.
10. Garantia i Suport
S.M.S.L products are typically covered by a manufacturer's warranty. For specific warranty terms, duration, and conditions, please refer to the warranty card included with your product or contact your retailer. For technical support, product inquiries, or service requests, please contact the official S.M.S.L support channels or your authorized dealer.
11. Vídeo del producteview
Vídeo 11.1: Un overview of the S.M.S.L DL300 AK4499EX+AK4191 Audio Decoder Headphone Ampvidador, espectacleasing el seu disseny i les seves característiques.