1. はじめに
Thank you for choosing the AUDALYTIC HP70 Fully Balanced Discrete Headphone Amplifier. This manual provides essential information for setting up, operating, and maintaining your device to ensure optimal performance and longevity. Please read it thoroughly before use.
The AUDALYTIC HP70 headphone amplifier, shown from the front, featuring its display, volume knob, and headphone outputs.
2. パッケージ内容
パッケージに以下の項目が含まれているか確認してください。
- AUDALYTIC HP70 Main Unit
- 電源ケーブル
- リモートコントロール
- 保証書
Diagram illustrating the items included in the AUDALYTIC HP70 package.
3.製品オーバーview
3.1フロントパネル
フロントパネルからは、重要なコントロールとヘッドフォン出力にアクセスできます。
Labeled diagram of the AUDALYTIC HP70 front panel.
- 電源ボタン: Short press to mute/unmute; press and hold to switch between standby and on.
- 表示画面: Shows volume level and function menus.
- ボリュームノブ： Rotate to adjust volume; short press to switch input source; press and hold to enter the menu.
- ヘッドフォンジャック： 4.4mm balanced output.
- ヘッドフォンジャック： 6.35mm single-ended output.
3.2 背面パネル
The rear panel features various input and output connections for audio sources and power.
Labeled diagram of the AUDALYTIC HP70 rear panel connections.
- XLR Balanced Inputs (Left/Right): バランスオーディオソース用。
- RCA Single-Ended Inputs (L1/R1, L2/R2): Two sets for single-ended audio sources.
- RCA Single-Ended Outputs (L Out/R Out): 他のオーディオ機器と接続します。
- XLR Balanced Outputs (Left/Right): For balanced output to other audio equipment.
- DC Input 15-18V: 外部電源用。
- 電源入力: Standard AC power input. Switching power supply requires no manual voltag選択してください。
- ヒューズ： 保護用の電源ヒューズ。
4. セットアップ
- 電源接続: Connect the provided power cable to the HP70's power input and then to a suitable AC power outlet. Alternatively, connect an external 15-18V DC power supply to the DC input.
- オーディオソースの接続: Connect your audio source (e.g., DAC, CD player) to the desired input on the rear panel using appropriate RCA (single-ended) or XLR (balanced) cables.
- ヘッドホン接続: Plug your headphones into either the 4.4mm balanced output or the 6.35mm single-ended output on the front panel.
- 前amp 出力（オプション）: If using the HP70 as a preamplifier, connect the RCA or XLR outputs to your power ampライファまたはアクティブスピーカー。
- 電源オン: Press and hold the power button on the front panel to turn on the device.
5. 操作
5.1 メニュー設定
The HP70 features a menu system for configuring various settings. Use the volume knob to navigate and select options.
Menu navigation flowchart for the AUDALYTIC HP70.
- Menu Graph: Press and hold the knob to enter the main menu.
- Short press to move to the next line.
- Rotate the knob to select.
利用可能な設定は次のとおりです:
- AMP 利得： Continuously adjustable from 0 to +28dB.
- プリアウト: Toggle preamplifier output ON or OFF.
- AMP 力： トグル ampリファイアの電源をオンまたはオフにします。
- SCREEN AUTO OFF: Toggle screen auto-off ON or OFF.
- EXIT： メニューを終了します。
5.2リモコン
The included remote control provides convenient access to the HP70's functions.
Labeled diagram of the AUDALYTIC HP70 remote control.
- スタンバイボタン： In standby mode, press to wake up the HP70 and activate the display. During normal operation, press to put the HP70 into standby mode.
- 入力選択ボタン： Press to cycle through the available input sources on the HP70.
- Four-Directional Navigation Button: When the settings menu is open: Use the Up/Down buttons to navigate through menu options. Use the Left/Right buttons to adjust the selected setting. Press the OK button to confirm certain selections.
- メニューボタン: Press to enter the main menu. Press again to exit the menu and return to the home screen.
- 戻るボタン: Returns to the home screen from any menu or submenu.
- 音量ダウンボタン: Decreases the output volume when the HP70 is on the home screen.
- 音量アップボタン: Increases the output volume when the HP70 is on the home screen.
- 消音ボタン： Toggles audio muting on and off.
重要な注意事項:
- Operational range may vary depending on the angle of use.
- Obstructions between the remote and the sensor may prevent proper operation.
- Remove the batteries if the remote will not be used for an extended period (one month or longer).
- If battery leakage occurs, thoroughly clean the battery compartment and install new batteries.
- This remote may accidentally operate other infrared-controlled devices when used nearby.
6. 主な特徴
The AUDALYTIC HP70 is engineered with advanced features for superior audio performance:
Visual summary of the AUDALYTIC HP70's main features.
- Fully Balanced Discrete Class A Amplifier： Utilizes 4 pairs of power transistors for ample driving power and superior control. This discrete design allows for precise fine-tuning and offers enhanced development potential, delivering a wider range of sonic characteristics. The post-ampリフィケーションtage can be disabled, allowing the unit to function as a dedicated pure preamplifier。
- Pure Preamp 機能性: プレamp uses two socketed LME49720 dual op-amps.プレamp output can be disabled for seamless switching between headphone and speaker modes.
- Fully Balanced Input Stage: A single-ended to balanced conversion circuit ensures RCA inputs benefit from full balanced drive performance.
- Built-in Low-Noise Power Supply: Features a 30VA low-noise power supply and also accepts an external 15-18V DC power input for flexibility.
- マルチ-stageVol。tag規制: Designed with multiple independent voltage regulation circuits to minimize ripple noise and reduce interference, resulting in cleaner audio reproduction.
- R-2R Relay Volume Control: Provides lossless precision adjustment with guaranteed channel matching across all 4 paths. Adjustable gain from 0 to 28dB allows matching with various headphones.
閉じる view の ampリファイアーとプレamp sections, highlighting the discrete components and LME49720 op-amps.
Internal components illustrating the input stage, power supply, multi-stagボリュームtage regulation, and R-2R relay volume control.
7. 仕様
Detailed technical specifications for the AUDALYTIC HP70:
Table summarizing the technical specifications of the AUDALYTIC HP70.
| カテゴリ | 仕様 |
|---|---|
| アナログ入力 | |
| RCA Inputs (2 sets) | Typical Input Sensitivity: 2 Vrms, Maximum Input Level: 3 Vrms, Input Impedance: 20 kΩ |
| XLR Balanced Input (1 set) | Typical Input Sensitivity: +15 dBu (5 V), Maximum Input Level: +18 dBu (6 V), Input Impedance: 10 kΩ |
| 前amp Analog Output (Rear XLR) | Frequency Response: 20-40 kHz (±0.1 dB), Signal-to-Noise Ratio (SNR): 122 dB, Channel Crosstalk: < -120 dB @ 1 kHz, THD+N: < 0.0004%, IMD: < 0.0004% |
| ヘッドフォン出力 | |
| 6.35mmシングルエンド出力 | 出力インピーダンス：0.1Ω |
| 4.4mm TRS Balanced Output | Output Impedance: 0.2 Ω, Frequency Response: 20-40 kHz (±0.1 dB), Signal-to-Noise Ratio (SNR): > 120 dB, Channel Crosstalk: -118 dB @ 1 kHz, THD+N (1 kHz): < 0.0005% @ 1000 mW into 32 Ω, IMD: < 0.0005% @ 1000 mW into 32 Ω, Maximum Unclipped Output Power (Balanced): ≈ 2000 mW into 32 Ω |
| その他のパラメータ | |
| 電源 | AC 115V / 230V, 50 / 60 Hz |
| 消費電力 | < 15W |
| 寸法（幅×高さ×奥行き） | 220 x 50 x 170 mm (Excluding protruding parts) |
| Net Weight / Gross (with packaging) | 1.6kg / 2.1kg |
8. Performance Charts
8.1 Balanced Headphone Output
Maximum unclipped power (mW) versus load impedance (Ω) per channel for balanced output.
Graph illustrating the balanced headphone output power of the HP70 across various impedances.
8.2 Single-Ended Headphone Output
Maximum unclipped power (mW) versus load impedance (Ω) per channel for single-ended output.
Graph illustrating the single-ended headphone output power of the HP70 across various impedances.
9。 トラブルシューティング
If you encounter issues with your AUDALYTIC HP70, please refer to the following common troubleshooting steps:
- 電源なし: Ensure the power cable is securely connected and the power outlet is functional. Check the fuse on the rear panel.
- 音が出ない: Verify that the correct input source is selected. Check all audio cable connections. Ensure headphones are properly plugged in and not muted. Adjust the volume level.
- 歪んだ音: Check audio cables for damage or loose connections. Ensure the audio source is not overdriving the input. Try a different audio source or headphones to isolate the problem.
- リモコンが動作しない: Check battery orientation and charge. Ensure no obstructions are between the remote and the HP70's IR sensor.
- 断続的な音声: Check all connections for looseness. Ensure the device is placed on a stable surface away from strong electromagnetic interference.
これらの手順を試しても問題が解決しない場合は、カスタマー サポートにお問い合わせください。
10. メンテナンス
To ensure the longevity and optimal performance of your AUDALYTIC HP70, follow these maintenance guidelines:
- クリーニング： 本体の外装は、柔らかく乾いた布で拭いてください。研磨剤入りの洗剤、溶剤、化学薬品スプレーは、表面の仕上げを傷める可能性があるため、使用しないでください。
- 換気： Ensure the unit has adequate ventilation. Do not block the ventilation holes or place the unit in an enclosed space that restricts airflow.
- 環境： Operate and store the device in a cool, dry environment, away from direct sunlight, heat sources, excessive dust, and moisture.
- 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。
- 電源を切る： When not in use for extended periods, power off the unit and disconnect it from the power supply.
11. 保証とサポート
Thank you for choosing GUSTARD HIFI products. To safeguard your rights and interests, please read the following warranty terms carefully to ensure you receive comprehensive after-sales service.
11.1製品保証
You will enjoy a 2年間の無料保証 そして 生涯メンテナンス from the date of purchase of your GUSTARD HIFI product.
- The manufacturer covers freight costs only from mainland China. Any freight and tax generated from overseas will be handled by the user in negotiation with the dealer.
11.2 Free Warranty Service
During the free warranty period, if the GUSTARD HP70 (or GUSTARD X30, as mentioned in the original document) fails due to component quality or manufacturing problems under normal use, it will be repaired free of charge.
11.3 Beyond the Warranty Service
Products will no longer be provided free warranty service under the following circumstances:
- The product's purchase date has exceeded the predetermined warranty period.
- The model, barcodes, and purchase date do not match the actual product and warranty card.
- Unauthorized modifications to the circuit, components, or self-repaired product without GUSTARD technician permission.
- Damage caused by irresistible natural forces.
- Damage beyond the permitted use or environmental conditions.
- Damage due to incorrect use or improper storage, including but not limited to:
- 巻tage too high, burning circuits or components.
- Bumping, resulting in damage to the shell or internal components.
- Damage due to water, oil, liquid, or excessive dust.
- Product oxidation or corrosion.
- Damage beyond the warranty period, such as individual component damage or appearance issues due to human damage, or firmware modifications leading to the unit being unable to work by unauthorized users.
In cases beyond warranty, GUSTARD commits to providing maintenance services for a reasonable fee (excluding large area components or circuit boards burned beyond repair). Freight, maintenance costs, and material costs will be borne by the user.
11.4 Official User Manual Video
For a visual guide to the AUDALYTIC HP70, please watch the official user manual video:
This video provides a visual guide to the AUDALYTIC HP70, covering its features, connections, and basic operation as detailed in the user manual.