AIYIMA DAC-A7 HIFI Headphone AmpManual d'usuari més viu

1. Introducció

The AIYIMA DAC-A7 is a versatile HIFI headphone amplifier and audio USB decoder designed to deliver high-quality audio. Featuring a premium chipset, Bluetooth 5.4 with LDAC support, and dual headphone outputs, it provides an exceptional listening experience for both headphones and active speakers. This manual will guide you through the setup, operation, and maintenance of your DAC-A7.

Figure 1: AIYIMA DAC-A7 HIFI Headphone Ampmés viu

2. Característiques clau

• High-End Chipset: Equipped with ES9038Q2M, OPA1612*4, and QCC3084 for pure audio sources and optimal performance.
• Bluetooth 5.4 with LDAC: Supports high-quality audio transmission up to 96kHz/24bit, compatible with LDAC, aptX-HD, aptX, AAC, and SBC codecs.
• Sortides dobles per a auriculars: Features both 3.5mm and 6.35mm headphone jacks, compatible with impedances from 16Ω to 600Ω.
• One-Button Output Switching: Easily switch between headphone and active speaker outputs.
• Volume & Mode Memory: Automatically remembers the last used input mode and volume level after powering on.
• Independent Power Input: Separate audio and circuit sections are isolated to eliminate interference, ensuring pure sound quality.
• Disseny compacte: Dimensions of 130*100*30mm and a weight of 400g make it suitable for desktop use.

Figura 2: Dimensions del producte i característiques principals

3. Contingut del paquet

Si us plau, comproveu el paquet per veure si hi ha els elements següents:

• 1 x AIYIMA DAC-A7 Main Unit
• 1 x adaptador d'alimentació DC 5V
• 1 x cable USB
• 1 x antena Bluetooth

4. Controls i interfícies

Figura 3: Panell frontal i posteriorview

4.1. Tauler frontal

• Presa d'auriculars de 3.5 mm: For connecting headphones with a 3.5mm plug.
• Presa d'auriculars de 6.35 mm: For connecting headphones with a 6.35mm plug.
• Volume/Mode Switch Knob:
• Short press: Power On / Switch input mode (COAX, OPT, USB, BT).
• Long press: Switch volume control logic (Unified / Independent).
• In Bluetooth mode, long-press to clear the Bluetooth pairing list.
• Indicador d'entrada: LEDs for COAX, OPT, USB, BT, VMI (Volume Mode Indicator).
• Output Toggle Switch:
• Up: RCA Line Output (for active speakers or external ampmés viu).
• Down: Headphone Amplifier Output (for headphones).
• Interruptor d'alimentació: Activa/desactiva el dispositiu.

Figure 4: Multifunctional Volume Knob Details

4.2. Panell posterior

• Entrada Bluetooth: Connector for the Bluetooth antenna.
• Entrada USB: USB-C port for connecting to a computer or other USB audio source.
• Optical Input (DIGITAL IN): Optical (Toslink) port for digital audio input.
• Coaxial Input (DIGITAL IN): Coaxial port for digital audio input.
• RCA Left Channel Output (LINE OUT): Left channel RCA output for connecting to active speakers or an ampmés viu.
• RCA Right Channel Output (LINE OUT): Right channel RCA output for connecting to active speakers or an ampmés viu.
• Entrada d'alimentació (5 V CC): USB-C port for connecting the DC 5V power adapter.

Figure 5: Independent Power Input and RCA Line Out

5. Guia de configuració

Follow these steps to set up your AIYIMA DAC-A7:

1. Connect the Bluetooth Antenna: Screw the provided Bluetooth antenna into the designated connector on the rear panel.
2. Connectar l'alimentació: Connect the DC 5V power adapter to the 'DC 5V' input on the rear panel and plug it into a power outlet.
3. Connecta la font d'àudio: Trieu el mètode d'entrada d'àudio que vulgueu:
• USB: Connect a USB cable from your computer to the 'USB' input on the rear panel.
• Òptic: Connect an optical cable from your audio source (e.g., TV, game console) to the 'OPTICAL' input.
• Coaxial: Connect a coaxial cable from your audio source to the 'COAXIAL' input.
• Bluetooth: Ensure the antenna is connected. You will pair your device later.
4. Connecta la sortida d'àudio: Choose your desired audio output method:
• Auriculars: Plug your headphones into either the 3.5mm or 6.35mm jack on the front panel. Ensure the Output Toggle Switch is in the 'Down' position (Headphone Amplifier Output).
• Active Speakers / Ampmés viu: Connect RCA cables from the 'LINE OUT' ports on the rear panel to your active speakers or an external amplifier. Ensure the Output Toggle Switch is in the 'Up' position (RCA Line Output).

Figure 6: Connection Diagram for various devices

6. Instruccions de funcionament

6.1. Encendre/apagar

Press the Power Switch on the front panel to turn the device on or off.

6.2. Selecció del mode d'entrada

Premeu breument Volume/Mode Switch Knob to cycle through the available input modes: Coaxial (COAX), Optical (OPT), USB, and Bluetooth (BT). The corresponding LED indicator will light up.

6.3. Control de volum

Gira el Volume/Mode Switch Knob to adjust the volume. The DAC-A7 supports two volume control logics:

• Unified Volume: Adjusts the overall volume for all outputs.
• Independent Volume: Memorizes volume levels for each mode.

Premeu llargament el botó Volume/Mode Switch Knob to switch between these two volume control logics. The VMI (Volume Mode Indicator) LED will show the current mode (solid light for unified, flashing light for independent).

Figure 7: Volume & Mode Memory Function

6.4. Selecció de sortida

Utilitza el Output Toggle Switch to select your desired audio output:

• Posició amunt: RCA Line Output (for active speakers or external ampmés viu).
• Posició avall: Auriculars Amplifier Output (for headphones).

Figure 8: Easy Switching Between Headphone and Active Speaker Outputs

7. Emparellament Bluetooth

1. Select Bluetooth Input: Short press the Volume/Mode Switch Knob until the 'BT' indicator LED lights up.
2. Activa el Bluetooth al teu dispositiu: Al teu telèfon intel·ligent, tauleta o ordinador, vés a la configuració de Bluetooth i activa el Bluetooth.
3. Pair with DAC-A7: Look for 'AIYIMA DAC-A7' in the list of available devices and select it to pair.
4. Esborra la llista d'aparellament: If you encounter issues or wish to pair a new device, long-press the Volume/Mode Switch Knob while in Bluetooth mode to clear the existing pairing list.

Figure 9: Bluetooth LDAC for Unlimited Enjoyment

8. Consells d'usuari

• For the best audio quality, use high-resolution audio files and ensure your source device supports the LDAC codec when using Bluetooth.
• Experiment with both 3.5mm and 6.35mm headphone outputs to see which provides the best fit and sound for your specific headphones.
• When switching between headphones and active speakers, remember to adjust the Output Toggle Switch accordingly to prevent unexpected loud sounds or lack of audio.
• If you experience any interference, ensure the DAC-A7 is placed away from other electronic devices that might emit electromagnetic noise.

9. Solució De Problemes

10. Especificacions

Figure 10: Measured Parameters (SNR, THD+N, Dynamic Range, Noise Floor, Frequency Response)

11. Manteniment

• Neteja: Feu servir un drap suau i sec per netejar l'exterior del dispositiu. No utilitzeu netejadors líquids ni aerosols.
• Emmagatzematge: Guardeu el dispositiu en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
• Eviteu la humitat: No exposeu el dispositiu a l'aigua ni a una humitat excessiva.
• Manejar amb cura: Eviteu deixar caure o sotmetre el dispositiu a forts impactes.

12. Garantia i Suport

AIYIMA products are manufactured to high quality standards. For any technical support or warranty inquiries, please refer to the contact information provided by your retailer or visit the official AIYIMA weblloc web. Si us plau, conserveu el comprovant de compra per a reclamacions de garantia.

13. Vídeo de demostració del producte