1. Entwodiksyon
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.

Imaj 1.1: Devan view of the Aune X8 18th Anniversary Edition-BT DAC.
2. Pwodwi souview
2.1 Karakteristik kle
- Odyo segondè rezolisyon: Supports up to 32bit/768k PCM and DSD512.
- Op-Amp Konsepsyon ranplase: 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.
- Antre versatile: USB, Optical, Coaxial, and Bluetooth 5.1 (aptX-HD, LDAC).
- Sòti miltip: RCA Preamp Out, RCA Line Out, and Balanced TRS Preamp Soti.
- 7 Filter Modes: Provides various sound filtering options.
2.2 Kontwòl ak Koneksyon

Image 2.1: Front and Rear Panel Layout of the Aune X8 XVIII-BT DAC.
Panèl devan:
- Bouton Seleksyon: Used to cycle through input sources.
- Limyè endikatè: Display the currently selected input (USB, OPT, COAX, A, B, C, D, MN).
- Volim bouton: Controls the output volume for the preamp pwodiksyon.
Dèyè Panel:
- TRS Output (L/R): Balanced TRS preamp output for professional audio connections.
- RCA Preamp Out (L/R): Variable RCA output for connecting to power amplifiers oswa moun ki pale aktif.
- RCA Line Out (L/R): Fixed level RCA output for connecting to integrated amplifiers oswa preamplifikatè.
- Antre kowaksyal: Antre odyo dijital.
- Antre optik: Antre odyo dijital.
- USB Antre: For connecting to computers or portable devices.
- Bluetooth Antenna (ANT): For Bluetooth signal reception (Bluetooth version only).
- Power Switch (SW): Limen oswa etenn aparèy la.
- Power Input (DC): Konekte ak adaptè kouran ki founi an.
3. Enstalasyon
3.1 Koneksyon Inisyal
- Konekte adaptè kouran ki founi an nan Antre pouvwa (DC) sou panèl dèyè a epi answit nan yon priz kouran ki apwopriye.
- 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 RCA Preamp Soti or TRS Output.
- For fixed line level output, use RCA Liy soti.
3.2 Konekte Sous Antre yo
The Aune X8 XVIII-BT DAC supports various digital audio inputs:
- USB Antre: Connect a USB cable from your computer, smartphone, tablet, or portable music player (with appropriate cables) to the USB Antre sou panèl la dèyè.
- Antre optik: Connect an optical cable from your digital audio source (e.g., TV, CD player, game console) to the Antre optik.
- Antre kowaksyal: Connect a coaxial cable from your digital audio source to the Kowaksyal Antre.
- Antre Bluetooth: Asire w antèn Bluetooth la byen tache ak ANT konektè sou panèl la dèyè.

Image 3.1: Multi-Connectivity Diagram.
4. Operasyon
4.1 Power On/Off
Vire a 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 Seleksyon Antre
Peze a Bouton Seleksyon 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 Kontwòl Volim
La Volim bouton on the front panel controls the output level of the RCA Preamp Soti epi TRS Output. Rotate clockwise to increase volume and counter-clockwise to decrease volume. The RCA Liy soti 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)
- Asire w antèn Bluetooth la konekte.
- Select the Bluetooth input using the Bouton Seleksyon.
- Sou aparèy mobil ou a (telefòn entelijan, tablèt, òdinatè pòtab), aktive Bluetooth epi chèche aparèy ki disponib yo.
- 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. Karakteristik avanse
5.1 Op-Amp Ranplasman
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.
- Ensure the device is powered off and disconnected from the power supply.
- Louvri aparèy la avèk prekosyon 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 an plas.
- Fèmen aparèy la casing byen fèm.

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. Senaryo Koneksyon
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 amplifikatè.

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. Espesifikasyon
| Karakteristik | Spesifikasyon |
|---|---|
| Modèl | X8 18th Anniversary Edition-BT |
| Decoding Capability (USB) | PCM 32bit/768kHz, DSD512 |
| Decoding Capability (Coaxial/Optical) | PCM 32bit/384kHz, DSD128 (DoP) |
| Bluetooth vèsyon | 5.1 |
| Kodèk Bluetooth | aptX-HD, LDAC, AAC |
| Sòti yo | RCA Preamp Out, RCA Line Out, Balanced TRS Preamp Soti |
| Antre | USB, Coaxial, Optical, Bluetooth |
| Op-Amp | Replaceable Dual Op-Amp |
| Mòd filtre | 7 Digital Filter Modes |
| Dimansyon | 9.61 x 7.17 x 4.41 pous (Dimansyon Pake) |
| Pwa | 3.83 liv (Pwa atik) |

Imaj 7.1: Karakteristik kle yo anlèview.
NAN. Depanaj
- Pa gen pouvwa: Ensure the power adapter is securely connected to both the device and a working power outlet. Check the power switch on the rear panel.
- Pa gen son:
- Verify that the correct input source is selected on the DAC.
- Check all audio cable connections between the DAC and your amplifier/oratè.
- If using preamp outputs, ensure the volume knob is not set to minimum.
- Konfime ke ou ampAnplifikatè/oratè yo limen epi yo configuré sou antre ki kòrèk la.
- 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.
- Pwoblèm koneksyon Bluetooth:
- Ensure the Bluetooth antenna is properly attached.
- Make sure the DAC is in Bluetooth input mode.
- Forget the device on your source device's Bluetooth settings and attempt to re-pair.
- Distòsyon son:
- Check if the input signal level is too high, causing clipping.
- Asire w tout koneksyon yo byen fèm epi yo pa domaje.
- If using a replaceable op-amp, ensure it is correctly seated and compatible.
9. Antretyen
- Netwayaj: Sèvi ak yon twal mou epi sèk pou netwaye deyò aparèy la. Evite itilize pwodui netwayaj likid oswa materyèl abrazif.
- Plasman: Place the device on a stable, flat surface with adequate ventilation. Avoid direct sunlight, heat sources, and high humidity.
- Jesyon kab: Ensure cables are not excessively bent or strained to prevent damage.
10. Garanti ak sipò
10.1 Enfòmasyon sou Garanti
All Aune products come with a 2-year after-sales service. This warranty covers manufacturing defects and issues arising from normal use.
10.2 Sèvis apre-lavant
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 Product Condition
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. Videyo pwodwi
Videyo 11.1: Prezantasyon videyo pwodwi ofisyèl laasing the Aune X8 18th Anniversary Edition DAC's features and design. This video provides a visual overview nan aparèy la ak kapasite li yo.





