KGUSS DAC-K3 Mini HiFi DAC Headphone AmpManuale utente lifier

1. Introduzione

The KGUSS DAC-K3 is a versatile Mini HiFi Digital-to-Analog Converter (DAC) and Headphone Amplifier designed to enhance your audio experience. It features multiple input options including Optical, Coaxial, and USB, allowing connection to various digital audio sources. The integrated headphone amplifier provides high-quality sound output for headphones, while RCA outputs enable connection to external ampdiffusori acustici o altoparlanti attivi.

Immagine: Frontale view of the KGUSS DAC-K3 unit.

2. Istruzioni di sicurezza

• Assicurarsi che l'adattatore di alimentazione voltage matches your local power supply to prevent damage.
• Non esporre il dispositivo ad acqua, umidità o temperature estreme.
• Avoid disassembling the unit. Refer servicing to qualified personnel.
• Tenere il dispositivo lontano da forti campi magnetici.
• Unplug the power adapter during lightning storms or when unused for extended periods.

3. Contenuto della confezione

Si prega di controllare la confezione per verificare la presenza dei seguenti elementi:

• KGUSS DAC-K3 Unit x 1
• Power Adapter (DC12V) x 1
• Cavo USB x 1
• 6.35mm to 3.5mm Headphone Adapter x 1
• Manuale d'uso x 1
• Certificate of Conformity x 1

Image: Contents included in the KGUSS DAC-K3 package.

4. Prodotto finitoview

4.1 Pannello frontale

Image: Front panel of the DAC-K3 with labeled controls and indicators.

1. Luce di alimentazione: Indica lo stato dell'alimentazione.
2. Interruttore di alimentazione: Accende o spegne l'unità.
3. Coaxial Light: Si illumina quando è selezionato l'ingresso coassiale.
4. Optical Light: Si illumina quando è selezionato l'ingresso ottico.
5. Audio Signal Input Switch Button (SELECT): Cycles through available input sources (Coaxial, Optical, USB).
6. USB Light: Si illumina quando è selezionato l'ingresso USB.
7. 6.35mm Headphone Output Interface (PHONE): Si collega alle cuffie.
8. Volume Adjustment Knob (VOL): Controls the output volume for both the headphone output and the RCA output.

4.2 Pannello posteriore

Image: Rear panel of the DAC-K3 with labeled input and output ports.

1. INGRESSO PC-USB: Connects to a computer. Supports OTG for mobile phones, requiring a compatible OTG adapter cable (Type-C/Android/Apple).
2. Optical Fiber Input (AUDIO IN): Connects to devices with optical output, such as TV set-top boxes, DVD players, or VCD players.
3. Coaxial Input (AUDIO IN): Connects to devices with coaxial output, such as TV set-top boxes, DVD players, or VCD players.
4. RCA Output (AUDIO OUT): Connects to a power amplificatore, tubo amplifier, or active speakers.
5. Power-IN (DC12V): Connects to the provided DC12V power adapter. Ensure the voltage does not exceed 12V, the current is more than 1A, and the adapter has an inner positive and outer negative pole (outer diameter 5.5mm, inner diameter 2.1mm).

5. Impostazione

Follow these steps to set up your KGUSS DAC-K3:

1. Collegamento elettrico: Connect the provided DC12V power adapter to the Power-IN port (M) on the rear panel and then plug it into a power outlet.
2. Connessione sorgente di ingresso: Choose your desired digital audio input:
   • For USB input, connect a USB cable from your computer to the PC-USB IN port (I).
   • For Optical input, connect an optical cable from your source device to the Optical Fiber Input port (J).
   • For Coaxial input, connect a coaxial cable from your source device to the Coaxial Input port (K).
3. Connessione di uscita: Connect your audio output device:
   • For headphones, plug your 6.35mm headphones directly into the Headphone Output Interface (G). If your headphones have a 3.5mm jack, use the provided 6.35mm to 3.5mm adapter.
   • Per l'esterno amplifiers or active speakers, connect RCA cables from the RCA Output ports (L) to your audio system.

Note on Headphone Priority: When both headphones and RCA outputs are connected, the headphone output takes priority. If headphones are unplugged, the sound will automatically switch to the RCA output. The volume knob adjusts both RCA output and headphone output levels.

Image: The DAC-K3 in a typical setup, demonstrating the headphone priority feature.

6. Istruzioni per l'uso

1. Accensione: Press the Power Switch (B) on the front panel. The Power Light (A) will illuminate.
2. Seleziona ingresso: Press the SELECT button (E) to cycle through the available input sources: Coaxial (COA), Optical (OPT), and USB. The corresponding indicator light (C, D, or F) will illuminate to show the active input.
3. Regola volume: Rotate the Volume Adjustment Knob (H) clockwise to increase volume and counter-clockwise to decrease volume.
4. Funzione muto: Pressing the Volume Adjustment Knob (H) may mute the audio output. Press it again to unmute.
5. Spegni: Press the Power Switch (B) again to turn off the unit.

7. Internal Components and Features

The KGUSS DAC-K3 incorporates high-quality components for optimal audio performance:

• OPA2134PA: A classic audio operational amplifier known for its mellow, round, neutral, and warm tone, often associated with a 'tube sound' characteristic.
• NE5532P: A high-performance, low-noise operational amplifier, praised for its fidelity and warm tone in the audio industry.
• Other key components include CM6642, CS8416, CS4398, TPA6120A2, UPC1237, an active crystal oscillator, and relays for signal switching.

Immagine: Primo piano view of the OPA2134PA and NE5532P operational amplificatori.

Image: Diagram highlighting various internal components on the circuit board.

8. Manutenzione

• Pulizia: Utilizzare un panno morbido e asciutto per pulire l'esterno dell'unità. Non utilizzare detergenti liquidi o materiali abrasivi.
• Magazzinaggio: Store the device in a cool, dry place away from direct sunlight and excessive dust when not in use.
• Ventilazione: Garantire un'adeguata ventilazione intorno all'unità per evitare il surriscaldamento.

9. Risoluzione Dei Problemi

• Nessun potere:
  • Check if the power adapter is securely connected to the unit and the power outlet.
  • Assicurarsi che la presa di corrente sia funzionante.
  • Verificare che l'interruttore di alimentazione sia in posizione "ON".
• Nessuna uscita audio:
  • Confirm the correct input source is selected (Coaxial, Optical, or USB) and its indicator light is on.
  • Controllare tutti i cavi audio (ingresso e uscita) per verificare che i collegamenti siano saldi.
  • Increase the volume using the Volume Adjustment Knob.
  • If using headphones and RCA output simultaneously, remember that headphone output takes priority. Unplug headphones to enable RCA output.
  • If the volume knob was pressed, ensure the unit is not muted.
• Suono distorto:
  • Check the quality of your input audio source and cables.
  • Ensure the volume is not set too high, causing clipping or distortion.
  • Verify that the 6.35mm to 3.5mm headphone adapter (if used) is fully and correctly inserted.
• Loose Optical Input Connection:
  • If the optical cable feels loose, try a different optical cable to ensure a secure connection.
• Audio Delay with TV Optical Output:
  • Some TVs may introduce a slight audio delay when using optical output. This is a characteristic of the TV's processing and not a fault of the DAC-K3.

10. Specifiche

Image: Dimensional drawing of the KGUSS DAC-K3 unit.

11. Garanzia e supporto

The KGUSS DAC-K3 comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package or contact your retailer for specific warranty terms and conditions.

For technical support, troubleshooting assistance, or further inquiries, please visit the official KGUSS websito o contattare il servizio clienti tramite il rivenditore presso cui è stato acquistato il prodotto.