1. はじめに
The S.M.S.L AO300 is a versatile audio device combining a power amplifier, DAC (Digital-to-Analog Converter), and headphone amplifier. It features a 2.1-channel active audio system with subwoofer output, delivering up to 165W x 165W output power. Equipped with high-performance chips like the MA5332MS amplifier chip, CS43131 DAC chip, and XMOS XU-316 USB processor, the AO300 supports high-resolution audio formats and multiple input options for a comprehensive audio experience.
2. 主な特徴
- 高性能DAC AMP チップ： Utilizes MA5332MS power amplifier chip, CS43131 decoding headphone amplifier chip, and NJW1194 Volume Control Chip.
- 2.1チャンネルオーディオ Amplifierシステム： Provides 165W x 165W output with subwoofer support. Supports high-resolution audio codecs like LDAC, APTX/HD, SBC, and AAC for wireless playback.
- XMOS MX316 USB Processor: Supports PCM up to 32bit/768kHz and DSD up to DSD256 for high-fidelity USB audio.
- 8 EQ Sound Mode Options: Includes Direct, Super Bass, Tone, Rock, SDB, Soft, Bass, Clear, and 5 filters for audio customization.
- 複数の入力と出力: USB, Optical, Coaxial, HDMI ARC, Aux inputs. Outputs include 4.4mm and 6.35mm headphone jacks, and speaker outputs.
- HDMI (ARC) Function: Supports Audio Return Channel for simplified TV connection and synchronized audio/video.
- MQA/MQA-CD サポート: For high-quality audio playback.
Image: Diagram illustrating the key features and technologies of the S.M.S.L AO300, including chipsets, power output, and supported audio formats.
3.製品オーバーview
フロントパネル
画像: 正面 view of the S.M.S.L AO300, showing the display screen, function knob, and headphone jacks.
- 表示画面: Shows current input, volume, and other settings.
- 赤外線受信窓： リモコン信号用。
- 機能ノブ： Rotates to adjust volume, press to select menu options.
- 6.35mmヘッドフォンジャック： 標準のヘッドフォン出力。
- 4.4mmヘッドフォンジャック： バランス型ヘッドフォン出力。
背面パネル
画像: 背面 view of the S.M.S.L AO300, detailing all input and output ports including USB, Optical, Coaxial, HDMI ARC, RCA, and speaker terminals.
- AC入力： 電源入力。
- 電源スイッチ： ユニットのオン/オフを切り替えます。
- Speaker Outputs (Left/Right): パッシブスピーカーを接続します。
- サブウーファー出力： アクティブサブウーファーを接続します。
- HDMI（ARC）入力： Connect to an ARC-compatible TV.
- 光入力： デジタルオーディオ入力。
- 同軸入力: デジタルオーディオ入力。
- 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。
- ライン入力（RCA）： アナログオーディオ入力。
- ブルートゥースアンテナ: ワイヤレス Bluetooth 接続用。
4. セットアップ手順
4.1 開梱
Carefully remove the AO300 unit and all accessories from the packaging. Verify that all components listed in the "List of accessories" are present.
Image: Contents of the S.M.S.L AO300 package, including the main unit, remote control, AC cable, USB cable, HDMI cable, Bluetooth antenna, user manual, and warranty card.
4.2 スピーカーとサブウーファーの接続
- Connect your passive speakers to the "SPEAKERS OUT" terminals on the rear panel. Ensure correct polarity (+ to + and - to -).
- If using an active subwoofer, connect it to the "SUB OUT" port using an RCA cable.
4.3 オーディオソースの接続
オーディオソースに応じて適切な入力を選択します。
- USB： Connect a computer or other USB audio device to the "USB IN" port using the provided USB cable.
- 光/同軸: Connect digital audio sources (e.g., CD player, game console) to the "OPTICAL" or "COAXIAL" inputs.
- HDMI ARC： Connect an ARC-compatible TV to the "HDMI (ARC)" port using an HDMI cable. Ensure your TV's HDMI ARC feature is enabled.
Image: Diagram showing how to connect the S.M.S.L AO300 to a TV via HDMI ARC, with the AO300 then connected to speakers.
- AUX（RCA）： Connect analog audio sources (e.g., CD/DVD player, DAC) to the "LINE IN" RCA ports.
- ブルートゥース： Bluetooth アンテナを背面パネルの指定されたコネクタにねじ込みます。
4.4電源接続
Connect the provided AC power cable to the "AC IN" port on the rear panel and then to a wall outlet.
5. 操作手順
5.1 電源オン/オフ
Flip the power switch on the rear panel to the "ON" position. The display will light up. To turn off, flip the switch to "OFF".
5.2入力の選択
Press the function knob on the front panel or use the remote control to cycle through available inputs (USB, Optical, Coaxial, HDMI ARC, AUX, Bluetooth).
5.3 ボリュームコントロール
Rotate the function knob clockwise to increase volume and counter-clockwise to decrease it. Volume can also be adjusted via the remote control.
5.4 ヘッドフォン出力
Connect your headphones to either the 6.35mm or 4.4mm jack on the front panel. The speaker outputs will automatically mute when headphones are connected.
5.5 EQとフィルターの設定
Access the menu by pressing and holding the function knob. Navigate to EQ or Filter settings using the knob, then press to select and adjust. The AO300 offers 8 EQ modes (Direct, Super Bass, Tone, Rock, SDB, Soft, Bass, Clear) and 5 digital filters.
5.6Bluetoothペアリング
- Select "Bluetooth" as the input source on the AO300.
- On your mobile device, search for "S.M.S.L AO300" in the Bluetooth settings and pair.
- Once paired, audio from your device will stream to the AO300.
Image: Illustration of the S.M.S.L AO300 receiving Bluetooth input from a smartphone and functioning as a 2.1 HIFI system with speakers and a subwoofer.
6. メンテナンス
- クリーニング： 本体の清掃には、柔らかく乾いた布をご使用ください。刺激の強い化学薬品や研磨剤の使用は避けてください。
- 配置: Place the AO300 on a stable, flat surface with adequate ventilation. Avoid direct sunlight, heat sources, and high humidity.
- 力： 長期間使用しない場合は、電源ケーブルを壁のコンセントから抜いてください。
7。 トラブルシューティング
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| 電源なし | 電源ケーブルが接続されていない、電源スイッチがオフになっている、コンセントが故障している。 | Ensure power cable is securely connected. Flip power switch to ON. Test outlet with another device. |
| 音声出力なし | Incorrect input selected; Volume too low; Speakers/headphones not connected; Muted. | Select correct input. Increase volume. Check speaker/headphone connections. Ensure unit is not muted. |
| Bluetooth ペアリングの失敗 | AO300 not in pairing mode; Device too far; Interference. | Ensure Bluetooth input is selected on AO300. Move device closer. Restart both devices. |
| HDMI ARC not working | TV ARC not enabled; Incorrect HDMI port; HDMI cable issue. | Enable ARC on your TV. Use an ARC-compatible HDMI port. Try a different HDMI cable. |
8. 仕様
- モデル： AO300
- 出力: 165W x 2（4Ω）、85W x 2（8Ω）
- DACチップ: CS43131
- Ampリファイアチップ： MA5332MS
- Volume Control Chip: ＮＪＷ１１０４
- USBプロセッサ: XMOS XU-316
- USB PCM Support: 最大32ビット/768kHz
- USB DSD Support: 最大DSD256
- Bluetooth コーデック: LDAC、APTX/HD、SBC、AAC
- 入力: USB, Optical, Coaxial, HDMI ARC, AUX (RCA), Bluetooth
- 出力: Speaker terminals (2.1 channel with subwoofer out), 4.4mm Headphone, 6.35mm Headphone
- EQモード： 8 (Direct, Super Bass, Tone, Rock, SDB, Soft, Bass, Clear)
- 寸法: Approximately 219mm (W) x 185mm (D) x 42mm (H) (based on image)
Image: Graphic detailing the output power of the S.M.S.L AO300 at different impedances (165W x 2 at 4Ω, 85W x 2 at 8Ω) and its low THD+N.
Image: The S.M.S.L AO300 shown in a desktop setup, highlighting its compact dimensions and its role as a DAC, headphone ampリファイア、そしてパワー amplifier。
9. 保証とサポート
9.1 保証情報
S.M.S.L products typically come with a 1-year warranty from the date of purchase. Please refer to the warranty card included in your package for specific terms and conditions. Keep your proof of purchase for warranty claims.
9.2 カスタマーサポート
For technical assistance, troubleshooting, or warranty inquiries, please contact S.M.S.L customer support. You can find contact information on the official S.M.S.L website or through the retailer where you purchased the product. S.M.S.L is committed to providing excellent products and services, including 24-hour online service for any questions.
詳細については、 AmazonのSMSLストア.