1. Introduzione
The Aune X8 18th Anniversary Edition-BT is a high-performance Digital-to-Analog Converter (DAC) designed for audiophiles. This device features high-resolution audio decoding up to 32bit/768k and DSD512, a unique op-amp replaceable design for sound customization, and multiple input/output options including USB, coaxial, optical, Bluetooth 5.1 (with aptX-HD and LDAC support), RCA preamp/line out, and balanced TRS output. This manual provides detailed instructions for setup, operation, and maintenance of your Aune X8 XVIII-BT DAC.
Immagine 1.1: anteriore view of the Aune X8 18th Anniversary Edition-BT DAC.
2. Prodotto finitoview
2.1 Caratteristiche principali
- Audio ad alta risoluzione: Supports up to 32bit/768k PCM and DSD512.
- Operazione-Amp Design sostituibile: Allows users to customize sound characteristics by replacing the dual op-amp.
- FPGA Core Design: Utilizes FPGA technology for purer digital signals and enhanced sound quality.
- Ingressi versatili: USB, Optical, Coaxial, and Bluetooth 5.1 (aptX-HD, LDAC).
- Uscite multiple: Preamplificatore RCAamp Out, RCA Line Out, and Balanced TRS Preamp Fuori.
- 7 Filter Modes: Provides various sound filtering options.
2.2 Controlli e connessioni
Image 2.1: Front and Rear Panel Layout of the Aune X8 XVIII-BT DAC.
Pannello frontale:
- Pulsante di selezione: Used to cycle through input sources.
- Luci di segnalazione: Display the currently selected input (USB, OPT, COAX, A, B, C, D, MN).
- Manopola del volume: Controls the output volume for the preamp produzione.
Pannello posteriore:
- TRS Output (L/R): Balanced TRS preamp output for professional audio connections.
- Preamplificatore RCAamp Out (L/R): Variable RCA output for connecting to power ampdiffusori acustici o altoparlanti attivi.
- Uscita di linea RCA (S/D): Fixed level RCA output for connecting to integrated amplifiers o preamplificatori.
- Ingresso coassiale: Ingresso audio digitale.
- Ingresso ottico: Ingresso audio digitale.
- Ingresso USB: For connecting to computers or portable devices.
- Antenna Bluetooth (ANT): For Bluetooth signal reception (Bluetooth version only).
- Power Switch (SW): Accende o spegne il dispositivo.
- Potenza in ingresso (CC): Si collega all'adattatore di alimentazione fornito.
3. Impostazione
3.1 Connessione iniziale
- Collegare l'adattatore di alimentazione fornito al Ingresso alimentazione (CC) on the rear panel and then to a suitable power outlet.
- Connect your audio output device (e.g., power amplifier, active speakers, headphone amplifier) to the appropriate output on the X8 XVIII-BT DAC:
- For variable output, use Preamplificatore RCAamp Fuori or TRS Output.
- For fixed line level output, use Uscita linea RCA.
3.2 Collegamento delle sorgenti di ingresso
The Aune X8 XVIII-BT DAC supports various digital audio inputs:
- Ingresso USB: Connect a USB cable from your computer, smartphone, tablet, or portable music player (with appropriate cables) to the Ingresso USB sul pannello posteriore.
- Ingresso ottico: Connect an optical cable from your digital audio source (e.g., TV, CD player, game console) to the Ingresso ottico.
- Ingresso coassiale: Connect a coaxial cable from your digital audio source to the Ingresso coassiale.
- Ingresso Bluetooth: Assicurarsi che l'antenna Bluetooth sia fissata saldamente al FORMICA connettore sul pannello posteriore.
Image 3.1: Multi-Connectivity Diagram.
4. Funzionamento
4.1 Accensione/spegnimento
Capovolgi il Power Switch (SW) on the rear panel to the 'ON' position to power on the device. Flip it to 'OFF' to power off.
4.2 Selezione dell'ingresso
Premere il tasto Pulsante di selezione on the front panel to cycle through the available input sources (USB, OPT, COAX, Bluetooth). The corresponding indicator light will illuminate to show the active input.
4.3 Controllo del volume
IL Manopola del volume on the front panel controls the output level of the Preamplificatore RCAamp Fuori E TRS Output. Rotate clockwise to increase volume and counter-clockwise to decrease volume. The Uscita linea RCA provides a fixed output level and is not affected by the volume knob.
4.4 Filter Modes
The X8 XVIII-BT DAC features 7 digital filter modes. These modes can be selected to fine-tune the sound characteristics according to your preference. Refer to the product's detailed specifications or Aune's official website for specific instructions on how to cycle through and select these filter modes, as the method may vary.
4.5 Bluetooth Pairing (Bluetooth Version Only)
- Assicurarsi che l'antenna Bluetooth sia connessa.
- Selezionare l'ingresso Bluetooth utilizzando il Pulsante di selezione.
- Sul tuo dispositivo mobile (smartphone, tablet, laptop), attiva il Bluetooth e cerca i dispositivi disponibili.
- Select "Aune X8 XVIII-BT" (or similar) from the list of devices to pair.
- Once paired, audio from your device will be streamed to the X8 XVIII-BT DAC.
Image 4.1: Bluetooth connectivity with portable devices.
5. Funzionalità avanzate
5.1 Op-Amp Sostituzione
The Aune X8 XVIII-BT DAC allows for the replacement of its dual op-amp, enabling users to customize the sound signature. This feature is intended for experienced users. Exercise caution when handling electronic components.
- Assicurarsi che il dispositivo sia spento e scollegato dall'alimentazione.
- Aprire con cautela il dispositivo casing according to the specific instructions provided with your unit or by Aune support.
- Locate the existing dual op-amp.
- Using an appropriate tool (e.g., op-amp puller), gently remove the op-amp. Note its orientation.
- Insert the new compatible dual op-amp, ensuring correct orientation and pin alignment. Do not force the op-amp al suo posto.
- Chiudere il dispositivo casing in modo sicuro.
Image 5.1: Op-Amp replaceable design.
Different dual op-amps can significantly alter the sound characteristics. Experiment with various compatible op-amps to find your preferred sound.
5.2 FPGA Core Design
The X8 XVIII-BT DAC incorporates Aune's proprietary FPGA (Field-Programmable Gate Array) technology. This design is implemented to process digital signals with high precision, resulting in a purer and more accurate audio reproduction.
Image 5.2: Illustration of FPGA Core Design.
6. Connectivity Scenarios
6.1 PC HiFi Setup
Connect the X8 XVIII-BT DAC to your computer via USB. This allows the DAC to process high-resolution audio files (up to 32bit/768k DSD512) from your computer, enhancing the sound quality for active speakers or headphone amplificatori.
Image 6.1: PC HiFi setup with Aune X8 DAC.
6.2 Coaxial/Optical Input Setup
Utilize the coaxial or optical inputs to connect to digital transports or players. This setup supports PCM up to 384k and DSD128, providing a high-quality audio system without requiring a PC.
Image 6.2: Coaxial/Optical input setup.
6.3 Portable Device Connectivity
The X8 XVIII-BT DAC can be connected to various portable devices such as iPhones, Android phones, iPads, or portable music players via USB (corresponding cables may be needed). This provides an instant improvement in sound quality for your mobile audio experience.
Image 6.3: Portable device connectivity.
7. Specifiche
| Caratteristica | Specificazione |
|---|---|
| Modello | X8 18th Anniversary Edition-BT |
| Decoding Capability (USB) | PCM 32 bit/768 kHz, DSD512 |
| Decoding Capability (Coaxial/Optical) | PCM 32bit/384kHz, DSD128 (DoP) |
| Versione Bluetooth | 5.1 |
| Codec Bluetooth | aptX-HD, LDAC, AAC |
| Risultati | Preamplificatore RCAamp Out, RCA Line Out, Balanced TRS Preamp Fuori |
| Ingressi | USB, Coaxial, Optical, Bluetooth |
| Operazione-Amp | Replaceable Dual Op-Amp |
| Modalità filtro | 7 Modalità di filtro digitale |
| Dimensioni | 9.61 x 7.17 x 4.41 pollici (dimensioni imballo) |
| Peso | 3.83 libbre (peso dell'articolo) |
Immagine 7.1: Caratteristiche principaliview.
8. Risoluzione Dei Problemi
- Nessun potere: Assicurarsi che l'adattatore di alimentazione sia collegato saldamente sia al dispositivo sia a una presa di corrente funzionante. Controllare l'interruttore di alimentazione sul pannello posteriore.
- Nessun suono:
- Verify that the correct input source is selected on the DAC.
- Check all audio cable connections between the DAC and your amplificatore/altoparlanti.
- If using preamp outputs, ensure the volume knob is not set to minimum.
- Conferma che il tuo amplificatore/altoparlanti siano accesi e impostati sull'ingresso corretto.
- Intermittent Audio/Dropouts:
- Check the quality and secureness of your digital input cables (USB, optical, coaxial).
- For Bluetooth, ensure your source device is within range and there is no interference.
- Try a different input source or cable to isolate the issue.
- Problemi di connessione Bluetooth:
- Assicurarsi che l'antenna Bluetooth sia collegata correttamente.
- Make sure the DAC is in Bluetooth input mode.
- Forget the device on your source device's Bluetooth settings and attempt to re-pair.
- Distorsione del suono:
- Controllare se il livello del segnale in ingresso è troppo alto, causando clipping.
- Ensure all connections are secure and free from damage.
- If using a replaceable op-amp, ensure it is correctly seated and compatible.
9. Manutenzione
- Pulizia: Utilizzare un panno morbido e asciutto per pulire l'esterno del dispositivo. Evitare l'uso di detergenti liquidi o materiali abrasivi.
- Posizionamento: Place the device on a stable, flat surface with adequate ventilation. Avoid direct sunlight, heat sources, and high humidity.
- Gestione dei cavi: Assicurarsi che i cavi non siano eccessivamente piegati o tesi per evitare danni.
10. Garanzia e supporto
10.1 Informazioni sulla garanzia
All Aune products come with a 2-year after-sales service. This warranty covers manufacturing defects and issues arising from normal use.
10.2 Servizio post-vendita
Aune provides a comprehensive after-sales system. Should you encounter any problems during the use of your product, please contact Aune customer support. They will assist you promptly and provide a satisfactory resolution.
10.3 Condizioni del prodotto
All Aune items are new and carefully packaged. If you observe any signs of use upon receiving your product, it may be due to transit or warehouse handling. Please communicate with customer support to address such concerns.
11. Video del prodotto
Video 11.1: Video ufficiale del prodotto mostratoasing the Aune X8 18th Anniversary Edition DAC's features and design. This video provides a visual overview del dispositivo e delle sue capacità.
