1. Introducció
The Sennheiser HDV 820 is a high-end headphone amplifier and digital-to-analog converter (DAC) designed to deliver exceptional audio quality for reference-class headphones. This manual provides essential information for setting up, operating, and maintaining your device to ensure optimal performance.
2. Informació de seguretat
- Llegiu aquest manual d'instruccions detingudament i completament abans d'utilitzar el producte.
- Mantingueu sempre el producte sec i no l'exposeu a temperatures extremes.
- Use only the power supply unit provided with the product.
- Do not attempt to open or repair the product yourself. Refer all servicing to qualified service personnel.
- Aquest producte conté substàncies químiques que l'estat de Califòrnia sap que causen càncer i defectes congènits o altres danys reproductius (advertència de la Proposició 65).
3. Què hi ha a la caixa
- 1x HDV 820 Unit
- 1x cable de CA
- 1x USB Driver (on storage media or download instructions)
- 1x Owner's Manual
4. Producte acabatview
4.1. Tauler frontal

Imatge: Davant view of the Sennheiser HDV 820 connected to headphones. The front panel features various headphone outputs and a large volume knob.
- Botó d'encesa: Encén/apaga la unitat.
- Sortides d'auriculars: Multiple options for connecting headphones, including balanced and unbalanced connections.
- Selector d'entrada: Cycles through available audio inputs.
- Control de volum: Large rotary knob for precise volume adjustment.
- Indicadors d'estat: LEDs to show active input and operational status.
4.2. Panell posterior

Imatge: posterior view of the Sennheiser HDV 820, showing the power input, analog inputs, digital inputs (Optical, Coaxial, USB), and balanced/unbalanced analog outputs.
- Entrada d'alimentació: Connects to the AC power cable.
- Analog Inputs (BAL/UNBAL): Per connectar fonts d'àudio analògiques.
- Digital Inputs (OPT/USB/COAX): For connecting digital audio sources.
- Analog Outputs (BAL): Balanced outputs for connecting to other audio equipment.
- Control de guany: Small knob for adjusting input gain.
5. Configuració
5.1. Potència de connexió
- Ensure the HDV 820 is placed on a stable, level surface.
- Connect the supplied AC cable to the power input on the rear panel of the HDV 820.
- Plug the other end of the AC cable into a suitable wall outlet.
5.2. Connexió de fonts d'àudio
The HDV 820 supports various audio input types:
- USB: Connect your computer (Desktop, Laptop) or compatible device (Smartphone, Tablet) using a USB cable to the USB input.
- Òptic (OPT): Use an optical cable to connect digital audio sources.
- Coaxial (COAX): Use a coaxial cable for digital audio connections.
- Analog In (BAL/UNBAL): Use XLR or RCA cables to connect analog audio sources.
5.3. Connexió d'auriculars
Connect your headphones to the appropriate output on the front panel:
- Auriculars equilibrats: Use the 4-pin XLR or dual 3-pin XLR outputs for balanced headphone connections.
- Unbalanced Headphones: Use the 6.35mm (1/4 inch) TRS output for unbalanced headphone connections.
5.4. Instal·lació del controlador
For optimal performance with a computer via USB, it may be necessary to install the dedicated USB driver. Refer to the included USB driver media or Sennheiser's official weblloc web per a instruccions de descàrrega i instal·lació.
6. Operating the HDV 820
6.1. Encendre/apagar
Press the power button on the front panel to turn the unit on or off. Status indicators will illuminate upon power-on.
6.2. Selecció d'entrada
Use the input selector button on the front panel to cycle through the connected audio sources (USB, Optical, Coaxial, Analog In). The active input will typically be indicated by an LED.
6.3. Control de volum
Adjust the large rotary volume knob on the front panel to set the desired listening level for your headphones. Start with a low volume and gradually increase it to a comfortable level.
6.4. Gain Settings
The HDV 820 features adjustable gain settings to match the sensitivity of your headphones. Use the gain control knob on the rear panel to optimize the signal level and prevent distortion. Consult your headphone specifications for recommended gain levels.
6.5. Formats d'àudio compatibles
The integrated ESS SABRE32 DAC supports high-resolution audio up to 32 bits and a sampvelocitat de ling de fins a 384 kHz. El amplifier is also capable of playing DSD256 files up to 12.3 MHz.
7. Característiques clau
- Qualitat de so excepcional: Designed to reveal the full potential of reference-class headphones, delivering nuanced audio reproduction.
- Advanced DAC Technology: Features a formidable ESS SABRE32 DAC (digital-to-analog converter) with 32-bit resolution and up to 384 kHz sampling rate, supporting DSD256 files.
- Disseny Premium: An anodized black finish with white LED lights complements high-end audio setups.
- Àmplia compatibilitat: Offers multiple input and output options (USB, Optical, Coaxial, Analog, Balanced XLR, Unbalanced TRS) for seamless integration with various audio devices.
- Construcció robusta: Built with high-quality aluminum for durability and optimal performance.
8. Especificacions
| Característica | Detall |
|---|---|
| Marca | Sennheiser |
| Nom del model | HDV 820 |
| Tipus de muntatge | Muntatge de taula |
| Material | Alumini |
| Color | Negre |
| Dimensions del producte | 12 "P x 8.8" W x 1.7" H |
| Pes de l'article | 5 lliures |
| Característica especial | High-end Headphone Amp / DAC with Balanced Operation |
| Usos recomanats | Música |
| Dispositius compatibles | Smartphone, Tablet, Desktop, Laptop |
| Ràtio senyal / soroll | 115 dB |
| Potència de sortida màxima dels altaveus | 115 watts |
| Resposta de freqüència | 100000 Hz |
| Tecnologia de connectivitat | Amb cable |
| Mode de sortida d'àudio | estèreo |
| DAC | ESS SABRE32 (32-bit, up to 384 kHz, DSD256) |
9. Solució De Problemes
- Sense so:
- Check all cable connections (power, audio source, headphones).
- Ensure the correct input source is selected on the HDV 820.
- Verify headphone volume and gain settings.
- If using USB, ensure the correct audio driver is installed and selected as the output device on your computer.
- So distorsionat:
- Reduce the volume on the HDV 820 or the audio source.
- Adjust the gain setting on the rear panel to match your headphones' impedance.
- Ensure audio cables are not damaged or improperly connected.
- Connection Issues with Windows:
- Some users have reported issues with USB driver recognition on Windows 10. Ensure you have the latest drivers from Sennheiser's weblloc.
- Consider alternative digital inputs like Optical or Coaxial if USB issues persist.
- Noisy Volume Knob:
- If the volume knob produces noise when adjusted, this may indicate a mechanical issue. Contact customer support for assistance.
10. Manteniment
- Clean the unit regularly with a soft, dry cloth. Do not use liquid cleaners or solvents.
- Mantingueu les obertures de ventilació netes per evitar el sobreescalfament.
- Store the unit in a cool, dry place away from direct sunlight and dust when not in use.
11. Garantia i Suport
The Sennheiser HDV 820 comes with a Garantia limitada. For detailed warranty terms and conditions, please refer to the warranty card included in your product packaging or visit the official Sennheiser weblloc.
For technical support, service, or further inquiries, please contact Sennheiser Customer Service through their official weblloc web o la informació de contacte que es proporciona a la documentació del producte.
Fabricant: Sennheiser
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