1. المقدمة
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.

الصورة 1.1: الجبهة view of the Aune X8 18th Anniversary Edition-BT DAC.
2. انتهى المنتجview
2.1 الميزات الرئيسية
- صوت عالي الدقة: Supports up to 32bit/768k PCM and DSD512.
- أب-Amp تصميم قابل للاستبدال: 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.
- مدخلات متعددة الاستخدامات: USB, Optical, Coaxial, and Bluetooth 5.1 (aptX-HD, LDAC).
- مخرجات متعددة: RCA قبلamp Out, RCA Line Out, and Balanced TRS Preamp خارج.
- 7 Filter Modes: Provides various sound filtering options.
2.2 الضوابط والاتصالات

Image 2.1: Front and Rear Panel Layout of the Aune X8 XVIII-BT DAC.
اللوحة الأمامية:
- زر التحديد: Used to cycle through input sources.
- أضواء المؤشر: Display the currently selected input (USB, OPT, COAX, A, B, C, D, MN).
- مقبض الصوت: Controls the output volume for the preamp الإخراج.
اللوحة الخلفية:
- TRS Output (L/R): Balanced TRS preamp output for professional audio connections.
- RCA قبلamp Out (L/R): Variable RCA output for connecting to power ampمكبرات الصوت أو مكبرات الصوت النشطة.
- مخرج خط RCA (يسار/يمين): Fixed level RCA output for connecting to integrated ampالمعمرين أو ما قبلampالقاتلون.
- المدخلات المحورية: مدخل الصوت الرقمي.
- المدخلات البصرية: مدخل الصوت الرقمي.
- مدخل USB: For connecting to computers or portable devices.
- Bluetooth Antenna (ANT): For Bluetooth signal reception (Bluetooth version only).
- Power Switch (SW): يقوم بتشغيل الجهاز أو إيقاف تشغيله.
- مدخل الطاقة (تيار مستمر): يتصل بمحول الطاقة المقدم.
3. الإعداد
3.1 الاتصال الأولي
- قم بتوصيل محول الطاقة المرفق بـ مدخلات الطاقة (تيار مستمر) 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 RCA قبلamp خارج or TRS Output.
- For fixed line level output, use خرج خط RCA.
3.2 توصيل مصادر الإدخال
The Aune X8 XVIII-BT DAC supports various digital audio inputs:
- مدخل USB: Connect a USB cable from your computer, smartphone, tablet, or portable music player (with appropriate cables) to the مدخل أوسب على اللوحة الخلفية.
- المدخلات البصرية: Connect an optical cable from your digital audio source (e.g., TV, CD player, game console) to the المدخل البصري.
- المدخلات المحورية: Connect a coaxial cable from your digital audio source to the المدخلات المحورية.
- مدخلات بلوتوث: تأكد من تثبيت هوائي البلوتوث بإحكام في النمل الموصل الموجود على اللوحة الخلفية.

Image 3.1: Multi-Connectivity Diagram.
4. التشغيل
4.1 تشغيل/إيقاف التشغيل
اقلب 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 اختيار المدخلات
اضغط على زر التحديد 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 التحكم في مستوى الصوت
ال مقبض الصوت on the front panel controls the output level of the RCA قبلamp خارج و TRS Output. Rotate clockwise to increase volume and counter-clockwise to decrease volume. The خرج خط 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)
- تأكد من توصيل هوائي البلوتوث.
- Select the Bluetooth input using the زر التحديد.
- على جهازك المحمول (الهاتف الذكي، الجهاز اللوحي، الكمبيوتر المحمول)، قم بتمكين البلوتوث وابحث عن الأجهزة المتاحة.
- 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. الميزات المتقدمة
5.1 المرجع-Amp الاستبدال
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.
- افتح الجهاز بعنايةasing 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 في مكانه.
- أغلق الجهاز جasinج بشكل آمن.

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 ampالقاتلون.

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. المواصفات
| ميزة | مواصفة |
|---|---|
| نموذج | X8 18th Anniversary Edition-BT |
| Decoding Capability (USB) | PCM 32 بت/768 كيلو هرتز، DSD512 |
| Decoding Capability (Coaxial/Optical) | PCM 32bit/384kHz, DSD128 (DoP) |
| نسخة البلوتوث | 5.1 |
| برامج ترميز البلوتوث | aptX-HD, LDAC, AAC |
| المخرجات | RCA قبلamp Out, RCA Line Out, Balanced TRS Preamp خارج |
| المدخلات | USB, Coaxial, Optical, Bluetooth |
| أب-Amp | Replaceable Dual Op-Amp |
| أوضاع التصفية | 7 Digital Filter Modes |
| أبعاد | 9.61 × 7.17 × 4.41 بوصة (أبعاد العبوة) |
| وزن | 3.83 رطل (وزن السلعة) |

الصورة 7.1: الميزات الرئيسيةview.
8. استكشاف الأخطاء وإصلاحها
- لا يوجد طاقة: Ensure the power adapter is securely connected to both the device and a working power outlet. Check the power switch on the rear panel.
- لا يوجد صوت:
- Verify that the correct input source is selected on the DAC.
- Check all audio cable connections between the DAC and your ampمكبرات الصوت/المكبرات الصوتية.
- If using preamp outputs, ensure the volume knob is not set to minimum.
- تأكد من أن ملف ampتم تشغيل مكبرات الصوت/السماعات وضبطها على المدخل الصحيح.
- 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.
- مشاكل اتصال البلوتوث:
- تأكد من تثبيت هوائي البلوتوث بشكل صحيح.
- Make sure the DAC is in Bluetooth input mode.
- Forget the device on your source device's Bluetooth settings and attempt to re-pair.
- تشويه الصوت:
- Check if the input signal level is too high, causing clipping.
- تأكد من أن جميع التوصيلات آمنة وخالية من التلف.
- If using a replaceable op-amp, ensure it is correctly seated and compatible.
9. الصيانة
- تنظيف: استخدم قطعة قماش ناعمة وجافة لتنظيف الجزء الخارجي من الجهاز. تجنب استخدام المنظفات السائلة أو المواد الكاشطة.
- الموقع: Place the device on a stable, flat surface with adequate ventilation. Avoid direct sunlight, heat sources, and high humidity.
- إدارة الكابلات: Ensure cables are not excessively bent or strained to prevent damage.
10. الضمان والدعم
10.1 معلومات الضمان
All Aune products come with a 2-year after-sales service. This warranty covers manufacturing defects and issues arising from normal use.
10.2 خدمة ما بعد البيع
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. فيديو المنتج
الفيديو 11.1: عرض فيديو المنتج الرسميasing the Aune X8 18th Anniversary Edition DAC's features and design. This video provides a visual overview عن الجهاز وقدراته.





