Aune S18 EVO DAC Instruction Manual

1.製品オーバーview

The Aune S18 EVO is a high-performance Digital-to-Analog Converter (DAC) designed for Hi-Fi audio systems, PCs, and home audio setups. It features advanced technologies such as a 10MHz clock input, 32bit/768kHz/DSD512/MQA support, dual AKM AK4497 DAC chips, and 3rd-generation PLL/Clock Sync technology for precise audio reproduction.

図1: Aune S18 EVO DAC front and rear panel overview. This image illustrates the various controls and connection ports on the device, including volume controls, input selection buttons, display, XLR/RCA outputs, and digital inputs.

2. 重要な安全情報

巻tage 要件: The Aune S18 EVO DAC must be used with a 110V power supply. Connecting the device to an excessive voltage will cause damage and void the warranty. Always verify your power source voltageデバイスを接続する前。

換気： 過熱を防ぐため、本体周囲に十分な換気を確保してください。通気口を塞がないでください。

水分： Keep the device away from water or excessive moisture. Do not operate with wet hands.

クリーニング： 清掃する前に電源を切ってください。柔らかく乾いた布を使用してください。液体洗剤やエアゾール洗剤は使用しないでください。

3. セットアップと接続

3.1 フロントパネルコントロール

• 音量を上げる/下げる: 出力音量を調整します。
• Short Press (Left/Right Arrows): Switches input channels.
• Long Press (Left/Right Arrows): Mutes/restores memorized volume output.
• Short Press (V/S button): Switches filter mode.
• Long Press (V/S button): Activates standby/wake mode.
• 画面： 現在の入力、音量、その他のステータス情報を表示します。

3.2 リアパネルの接続

• XLR (R/L) Output: バランスアナログオーディオ出力。
• RCA出力： アンバランスアナログオーディオ出力。
• AES入力: デジタルオーディオ入力（AES/EBU）。
• 光入力： デジタルオーディオ入力（TOSLINK）。
• 同軸入力: デジタルオーディオ入力（S/PDIF）。
• USB入力： コンピューターまたはその他の USB オーディオ ソースに接続します。
• 外部クロック入力（10MHz）： For connecting an external 10MHz clock source for enhanced synchronization.
• Bluetoothアンテナインターフェース: 付属のBluetoothアンテナを接続します。
• 電源スイッチ： ユニットの電源をオンまたはオフにします。
• 電源インターフェース: Connects to the 110V AC power adapter.

3.3 オーディオソースの接続

Connect your digital audio sources (PC via USB, CD player via Coaxial/Optical, etc.) to the corresponding input ports on the rear panel. For Bluetooth, attach the antenna and pair your device as described in Section 4.4.

3.4 接続する Amp講演者/スピーカー

Connect the S18 EVO's RCA or XLR outputs to your amplifier or active speakers. Use XLR connections for optimal performance if your amplifier supports them.

4. 操作

4.1 電源のオン/オフ

Flip the power switch on the rear panel to the 'ON' position to power on the device. To turn off, flip the switch to 'OFF'. For temporary standby, long-press the V/S button on the front panel.

4.2入力の選択

Short-press the left or right arrow buttons on the front panel to cycle through available input channels (USB, Coaxial, Optical, AES, Bluetooth, etc.). The selected input will be shown on the display.

4.3 ボリュームコントロール

Use the 'Volume Up' and 'Volume Down' buttons on the front panel to adjust the output volume. The current volume level is indicated on the display.

4.4 フィルタモード

The S18 EVO features custom DAC chip filters. Short-press the V/S button to cycle through different filter modes, optimizing the sound characteristics for your preference. Refer to the display for the active filter mode.

4.5Bluetoothペアリング

To pair a Bluetooth device, select the Bluetooth input. The S18 EVO will enter pairing mode. On your mobile device or computer, search for available Bluetooth devices and select 'Aune S18 EVO'. Once connected, audio will stream wirelessly to the DAC.

5. 主要技術

5.1 3rd-Gen Fully Synchronized PLL Technology

The S18 EVO integrates a 3rd-generation Phase-Locked Loop (PLL) core with full-clock synchronization. This technology dynamically tracks and eliminates errors between the reference and feedback clocks, significantly reducing clock signal jitter to the femtosecond level. This ensures a highly unified time reference across all units during high-speed data processing, providing a stable, pure, and synchronized clock foundation for the entire system.

図2: Illustration of the 3rd-Gen PLL Core, a key component for precise clock synchronization.

5.2 XMOS Optimization for USB Audio

Unlike conventional USB DAC designs, the S18 EVO employs an ultra-low-jitter PLL to supply superior clock signals to the XMOS chip. This approach, combined with Aune's customized drivers, ensures full-device synchronization and unlocks the true potential of XMOS for high-fidelity USB audio reproduction.

図3: 閉じる view of the XMOS chip, central to the S18 EVO's USB audio processing.

5.3 Full-Channel IIS Synchronized Direct-to-DAC Architecture

All digital inputs (AES, optical, and coaxial) are reconditioned through digital synchronization technology combined with a low-jitter PLL. This ensures that all signals are fed into the DAC via the IIS interface, delivering higher fidelity, more natural, and truer sound reproduction across every input channel.

図4: Diagram illustrating the IIS synchronized direct-to-DAC architecture for various digital inputs.

5.4 Hi-Fi-Grade Bluetooth with PLL Clock Synchronization

Conventional Bluetooth signals often exhibit high jitter. The S18 EVO utilizes Aune's in-house Bluetooth + PLL technology to recondition the Bluetooth digital signal before it reaches the DAC. This process achieves high-fidelity audio even when streaming via Bluetooth.

5.5 Dual AK4497 DACs with Precision Synchronization

The S18 EVO employs an external PLL to provide a clock reference for its two AK4497 DAC chips. This, combined with mirrored circuitry, layout, and components, ensures highly coordinated left and right channels, recreating a cohesive soundstage.

図5: A distinctive global clock synchronization architecture diagram, showing how various inputs are processed and synchronized before reaching the DACs.

6. メンテナンス

• クリーニング： Use a soft, dry, lint-free cloth to clean the exterior of the unit. Avoid abrasive cleaners, solvents, or chemical sprays.
• 換気： Ensure the ventilation slots are clear of dust and obstructions to maintain proper airflow.
• ストレージ： 長期間使用しない場合は、直射日光や極端な温度を避け、涼しく乾燥した場所にデバイスを保管してください。
• 取り扱い： 本機は丁寧に取り扱ってください。落としたり、強い衝撃を与えたりしないでください。

7。 トラブルシューティング

• 電源なし:
  • Ensure the power cable is securely connected to both the S18 EVO and a working 110V power outlet.
  • 背面パネルの電源スイッチが「オン」の位置にあることを確認します。
  • 電源コンセントが機能していることを確認します。
• サウンド出力なし:
  • Confirm the correct input source is selected on the S18 EVO.
  • Check all audio cables (RCA, XLR) are securely connected between the S18 EVO and your ampライター/スピーカー。
  • Ensure the volume level on the S18 EVO is not muted or set too low.
  • 確認する ampスピーカー/コントローラの電源がオンになっており、正しい入力に設定されています。
  • If using USB, ensure the correct audio output device is selected in your computer's sound settings and Aune's customized drivers are installed.
• Bluetooth接続の問題:
  • Bluetoothアンテナがしっかりと取り付けられていることを確認してください。
  • Verify the S18 EVO is in Bluetooth input mode and pairing mode is active.
  • ソースデバイスで Bluetooth を無効にしてから再度有効にします。
  • Move your source device closer to the S18 EVO to reduce interference.
• 歪んだ音:
  • ケーブル接続が緩んでいないか確認してください。
  • ソースオーディオを確認する file 破損したり品質が低下したりしていないこと。
  • を確認しますample rate and bit depth settings on your source device match the S18 EVO's capabilities.
  • Try a different input source to isolate the problem.

8. 仕様

9. 保証情報

The Aune S18 EVO DAC comes with a 2年間保証 from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by misuse, accident, unauthorized modification, or connection to incorrect voltage (e.g., exceeding 110V). Please retain your proof of purchase for warranty claims.

10. カスタマーサポート

For technical assistance, warranty claims, or any questions regarding your Aune S18 EVO DAC, please contact Aune customer support through their official website or the retailer from whom you purchased the product. Please have your model number (S18 EVO) and proof of purchase ready when contacting support.