1. Prodotto finitoview
The Gustard DAC-R26 II is a high-performance R2R Streamer Digital-to-Analog Converter designed for audiophiles and professional audio setups. It features a fully discrete 26-bit R-2R resistor ladder network, supporting high-resolution audio formats up to DSD2048 and PCM 32-bit/768kHz. This device integrates advanced streaming capabilities, a high-precision clock, and a custom Class-A LPF circuit to deliver natural, detailed, and immersive sound reproduction.
Immagine 1.1: anteriore view of the Gustard DAC-R26 II, showcasing its design and highlighting key features such as R2R architecture, 1-Bit DSD support, XMOS, Femto Clock, CPLD, GCLK-02, IIS, and Bluetooth 5.1.
2. Configurazione e connessioni
2.1 Disimballaggio
Rimuovere con cautela tutti i componenti dall'imballaggio. Assicurarsi che siano presenti i seguenti elementi:
- Gustard DAC-R26 II Unit
- Telecomando
- Gustard Card (Warranty/Information)
- Cavo di alimentazione
- Cavo USB
2.2 Collegamento di alimentazione
Connect the provided power cord to the AC inlet on the rear panel of the DAC-R26 II and then to a suitable AC power outlet. The unit supports AC115V/230V 50/60Hz, with manual switching. Ensure the voltage switch is set correctly for your region before powering on.
2.3 Connessioni di ingresso/uscita
The DAC-R26 II offers a comprehensive range of digital inputs and analog outputs for versatile connectivity:
- Ingressi digitali: COAX, AES, OPT (Optical), USB, IIS (I2S), LAN (Ethernet for streaming), 10MHz Clock Input (BNC).
- Uscite analogiche: RCA (unbalanced), XLR (balanced).
Connect your digital audio sources (e.g., computer, CD transport, network streamer) to the appropriate digital input ports. Connect the RCA or XLR analog outputs to your amplificatore, preamplifier, o altoparlanti attivi.
Immagine 2.1: Interno view highlighting the GCLK-02 clock module and power supply components, crucial for stable signal performance and overall audio quality.
3. Funzionamento
3.1 Funzionamento di base
After connecting the power and audio cables, press the power button on the front panel or use the remote control to turn on the unit. Use the input selector button on the front panel or remote to cycle through the available digital inputs (COAX, AES, OPT, USB, IIS, LAN, Bluetooth) until your desired source is selected. The display will indicate the active input and current audio format.
3.2 Riproduzione audio ad alta risoluzione
The DAC-R26 II supports a wide range of high-resolution audio formats:
- COAX/AES/OPT Input: PCM 16-24bit/44.1-192kHz; DSD DoP64.
- USB/Streamer Input: PCM 16-32bit/44.1-768kHz; DSD DoP64-DOP256; NATIVE DSD: DSD64-DSD512.
- IIS Input: PCM 16-32bit/44.1-1536kHz; NATIVE DSD: DSD64-DSD2048 (DSD2048: @ DSD direct mode).
For optimal DSD playback, utilize the DIRECT DSD mode via the IIS interface, which preserves the original bitstream integrity.
3.3 Streaming di rete
Connect the DAC-R26 II to your local network via the LAN port. The device supports mainstream streaming protocols such as AirPlay, UPnP, Spotify, NAA, and Roon Bridge. For network bridge configuration, open a web browser on a device connected to the same network and navigate to http://r26.local.
Image 3.1: Illustration of the Network Bridge System, showing compatibility with various streaming services and the web interfaccia per la configurazione.
3.4 Connettività Bluetooth
The DAC-R26 II features Bluetooth 5.1 with support for LDAC, AAC, SBC, and aptX codecs, powered by a Qualcomm QCC5125 chip. To pair, select the Bluetooth input on the DAC, then search for 'Gustard DAC-R26 II' on your Bluetooth-enabled device and connect.
Image 3.2: Details on the XMOS XU216 USB interface supporting PCM768K and DSD512, alongside the Bluetooth 5.1 module with supported codecs.
4. Manutenzione
To ensure the longevity and optimal performance of your Gustard DAC-R26 II, follow these maintenance guidelines:
- Pulizia: Utilizzare un panno morbido e asciutto per pulire l'esterno dell'unità. Evitare l'uso di detergenti liquidi, spray o materiali abrasivi, poiché potrebbero danneggiare la finitura o i componenti interni.
- Ventilazione: Ensure the unit is placed in a well-ventilated area. Do not block the ventilation slots. Proper airflow prevents overheating and maintains stable operation.
- Ambiente: Keep the DAC away from direct sunlight, heat sources, excessive dust, and moisture. The operating temperature should not exceed 50 degrees Celsius.
- Spegni: When not in use for extended periods, it is recommended to power off the unit and disconnect it from the AC outlet.
5. Risoluzione Dei Problemi
If you encounter issues with your DAC-R26 II, refer to the following common troubleshooting steps:
- Nessun potere:
- Verificare che il cavo di alimentazione sia collegato saldamente sia all'unità sia alla presa CA.
- Verify that the AC voltage switch on the rear panel is set correctly for your region.
- Test the AC outlet with another device to ensure it is functional.
- Nessuna uscita audio:
- Ensure the correct input source is selected on the DAC.
- Verify that the analog output cables (RCA or XLR) are securely connected to both the DAC and your amplificatore/preamppiù vivace.
- Controlla il livello del volume sul tuo amplificatore/preamppiù vivace.
- Confirm that your audio source is playing and sending a signal.
- Suono distorto:
- Verificare la presenza di connessioni dei cavi allentate.
- Garantire la sample rate and bit depth settings on your audio source match the DAC's capabilities for the selected input.
- If using USB, try reinstalling the USB driver on your computer if applicable.
- Problemi di streaming di rete:
- Ensure the LAN cable is securely connected and your network is active.
- Verify that your streaming device and the DAC are on the same local network.
- Restart your network router and the DAC.
Se il problema persiste dopo aver provato questi passaggi, contattare l'assistenza clienti.
6. Specifiche tecniche
Detailed specifications for the Gustard DAC-R26 II:
| Categoria | Specificazione |
|---|---|
| Digital Inputs (COAX/AES/OPT) | PCM 16-24bit/44.1-192kHz; DSD DoP64 |
| Digital Inputs (USB/Streamer) | PCM 16-32bit/44.1-768kHz; DSD DoP64-DOP256; NATIVE DSD: DSD64-DSD512 |
| Digital Inputs (IIS) | PCM 16-32bit/44.1-1536kHz; NATIVE DSD: DSD64-DSD2048 (DSD2048: @ DSD direct mode) |
| 10M Input Interface (BNC) | Input impedance 50 Ohm, 0dBm-20dBm, CMOS square wave 0.2V-3.3V, sine wave 0.5-3.3V |
| Risposta in frequenza | 20-20kHz /±0.2dB OS mode |
| Gamma dinamica | >117 dB |
| Signal-to-Noise Ratio | >122 dB |
| Crosstalk di canale | <-134dB @ 1kHz |
| THD+N | <=0.003% a 1kHz |
| IMD | ≈0.008% @ 0dbfs |
| Livello di uscita RCA | 2.5Vrms (VOLUME FISSO) |
| Impedenza di uscita RCA | 100Ω |
| XLR Output Level | 5.0Vrms (VOLUME FISSO) |
| XLR Output Impedance | 100Ω |
| Alimentazione CA | AC115V/230V 50/60Hz (Manual switching) |
| Consumo energetico | <20Settembre |
| Dimensioni del telaio (L x P x A) | 330 x 260 x 65 mm (No pins included 10mm) |
| Peso | 5.5KG |
| Valutazione della temperatura superiore | 50 gradi Celsius |
| Versione Bluetooth | 5.1 (Supports LDAC/AAC/SBC/aptX, Qualcomm QCC5125) |
| USB Interface Chip | Modello XMOS XU216 |
Image 6.1: Close-up of the proprietary discrete R-2R architecture design by Gustard, showcasing the 26-bit module for natural audio reproduction.
Immagine 6.2: Dettagliata view of internal components related to native 1-Bit DSD processing, emphasizing the unit's capability for high-fidelity audio.
7. Informazioni sulla garanzia
The Gustard DAC-R26 II typically comes with a 2-year warranty. Please refer to the Gustard Card included in your package or contact your retailer for specific warranty terms and conditions, as coverage may vary by region and seller. Keep your proof of purchase for warranty claims.
8. Assistenza clienti
For technical assistance, troubleshooting, or warranty inquiries, please contact your retailer or the manufacturer, Gustard. You may also visit the AOSHIDA store on Amazon for additional product information and support resources: