1. Увод
The SMSL DO300EX is a versatile MQA DAC, Bluetooth 5.1 balanced headphone amplifier, and preamplifier designed for high-fidelity audio systems. It integrates advanced audio technologies to deliver exceptional sound performance across various input and output options.
This manual provides detailed instructions for setting up, operating, and maintaining your DO300EX to ensure optimal performance and longevity.
Figure 1: SMSL DO300EX MQA DAC Headphone Ampлифиер Преamplifier with included remote control.
2. Кључне карактеристике
- Advanced DAC Chips: Equipped with AK4191+AK4499EX and XMOS XU-316 chips, supporting up to 32bit/768kHz PCM and DSD512.
- MQA & MQA-CD Decoding: Full support for MQA and MQA-CD audio signal decoding, restoring original studio sound quality.
- Вишеструки улази: Features USB, optical, coaxial, and I2S inputs for broad compatibility with various audio sources.
- Разноврсни излази: Offers 4.4mm and 6.35mm headphone outputs, alongside balanced XLR and RCA line outputs.
- Екран високог квалитета: Suspended display window with tempered glass, full-laminated color IPS display, and DOP independent display function.
- Премиум компоненте: Constructed with chamfered high-grade aluminum, 9 high-end dual op amps, audiophile components, and a self-developed CK-03 clock processing circuit for reduced jitter.
- Блуетоотх КСНУМКС: Integrated Qualcomm Bluetooth 5.1 chip supporting LDAC 24bit/96kHz, APTX-HD, SBC, and AAC codecs.
Слика 2: Завршеноview of the SMSL DO300EX highlighting its core features and technologies.
3. Водич за подешавање
3.1 Распакивање и почетни преглед
Carefully remove the DO300EX from its packaging. Inspect the unit for any signs of damage. Ensure all accessories are present:
- SMSL DO300EX Unit
- Кабл за напајање наизменичном струјом
- УСБ кабл
- Ремоте Цонтрол
- Блуетоотх антена
- Упутство за употребу
- Гарантни лист
Figure 3: Included accessories for the SMSL DO300EX.
3.2 Connecting Audio Sources and Outputs
The DO300EX offers a wide range of input and output options. Refer to the diagram below for proper connection guidance.
Figure 4: Detailed diagram of the input and output ports on the SMSL DO300EX, illustrating connections to various audio devices.
- Улази: Connect your digital audio sources (PC, CD/DVD player, TV, other audio devices) to the USB, Optical, Coaxial, or I2S input ports. For Bluetooth, ensure the antenna is connected and pair your mobile device.
- Излази за слушалице: Use the 4.4mm balanced or 6.35mm single-ended jacks on the front panel for headphones.
- Линијски излази: Повежите се на напајање amplifier or active speakers using the balanced XLR or unbalanced RCA outputs on the rear panel.
- Снага: Connect the AC power cable to the DC 12V input on the rear panel and then to a power outlet.
4. Упутство за употребу
4.1 Контроле на предњој плочи
The front panel features a multi-functional knob and an IPS display for intuitive control and status monitoring.
- Мултифункционално дугме: This knob controls volume, input selection, and menu settings. Rotate to adjust volume or navigate menus. Press to confirm selections or switch inputs.
- ИПС екран: Shows current volume level, active input, sampling rate, and other operational parameters. Supports DOP independent display for decoding format.
- Прикључци за слушалице: 4.4mm balanced and 6.35mm single-ended outputs for direct headphone connection.
Figure 5: Front panel design of the SMSL DO300EX, highlighting the display and multi-functional knob.
4.2 Даљински управљач
Укључени даљински управљач омогућава лак приступ свим функцијама са даљине.
Figure 6: Layout of the full-function remote control for the SMSL DO300EX.
- Укључивање/искључивање: Укључује или искључује јединицу.
- Волуме +/-: Подешава излазну јачину звука.
- Изаберите улаз: Кружи кроз доступне изворе улаза.
- Мени/ОК: Приступа менију и потврђује изборе.
- Искључи звук: Искључује или укључује аудио излаз.
- FN (Define in the menu): Customizable function button.
4.3 Репродукција MQA
The DO300EX supports MQA and MQA-CD decoding. Ensure your audio source is providing a genuine MQA-CD signal and that the fiber optic or coaxial signal output by the CD player is unprocessed source code for optimal MQA experience.
Figure 7: MQA-CD decoding is supported via Coaxial and Optical inputs, ensuring high-quality audio playback.
5. Спецификације
| Феатуре | Детаљ |
|---|---|
| Модел | ДО300ЕКС |
| DAC чипови | AK4191 + AK4499EX |
| УСБ чип | КСМОС КСУ-316 |
| УСБ Сampлинг Рате | ПЦМ 32бит/768кХз, ДСД512 |
| Оптички/коаксијални Сampлинг Рате | PCM 24bit/192kHz |
| Инпутс | USB, Optical, Coaxial, I2S |
| Излази за слушалице | 4.4 мм балансирани, 6.35 мм једнострани |
| Лине Оутпутс | XLR Balanced, RCA Unbalanced |
| Блуетоотх верзија | 5.1 (LDAC, APTX-HD, SBC, AAC) |
| Headphone Output Power (4.4mm) | 2570mW x 2 (32Ω/THD+N < 1%) |
| Headphone Output Power (6.35mm) | 640mW x 2 (32Ω/THD+N < 1%) |
| Динамички опсег (XLR) | 132дБ |
| Динамички опсег (RCA) | 127дБ |
| THD+N (XLR) | 0.00006% (-124дБ) |
| Потрошња енергије | <20В |
| Стандби Повер | <0.5В |
Figure 8: Comprehensive product parameters and specifications for the SMSL DO300EX.
6. Одржавање
To ensure the longevity and optimal performance of your SMSL DO300EX, follow these maintenance guidelines:
- Чишћење: Use a soft, dry cloth to clean the exterior of the unit. Avoid using harsh chemicals or abrasive materials, which can damage the finish.
- вентилација: Уверите се да је уређај постављен у добро проветреном простору како бисте спречили прегревање. Не блокирајте вентилационе отворе.
- Искључивање: Always power off the unit and disconnect it from the power source before cleaning or when not in use for extended periods.
- Окружење: Избегавајте излагање уређаја екстремним температурама, влажности или директној сунчевој светлости.
КСНУМКС. Решавање проблема
If you encounter any issues with your DO300EX, please refer to the following common troubleshooting steps:
- Нема напајања:
- Check if the power cable is securely connected to both the unit and the power outlet.
- Уверите се да је утичница функционална.
- Нема излаза звука:
- Verify that the correct input source is selected on the DO300EX.
- Check all audio cable connections (USB, Optical, Coaxial, I2S, XLR, RCA, headphone jacks).
- Уверите се да јачина звука није искључена или подешена прениско.
- Confirm that your connected headphones or speakers are working correctly.
- Изобличен звук:
- Check the quality of your audio source and cables.
- Осигурајте сampling rate settings on your source device match the capabilities of the DO300EX.
- Reduce the volume level to check if distortion is due to overdriving.
- Проблеми са Блуетоотх везом:
- Уверите се да је Блутут антена правилно инсталирана.
- Verify that Bluetooth is enabled on your source device and the DO300EX is in pairing mode.
- Покушајте да раскинете упаривање и поново упарите уређај.
Ако проблем и даље постоји након што сте пратили ове кораке, обратите се корисничкој подршци.
8. Гаранција и подршка
The SMSL DO300EX comes with a 12-месечна гаранција from the date of purchase. Additionally, the product can be returned within 30 дана from the date of purchase if you are not satisfied.
For any questions or technical assistance, our customer service team provides 24-часовна онлајн подршка. Please feel free to contact us through the official channels provided with your product or on the manufacturer's webсајту.
9. Видео снимци производа
No official product videos specifically for the SMSL DO300EX were found from the seller in the provided data. The available videos are for a different product (Fosi Audio ZH3) and are therefore not included in this manual to maintain relevance and accuracy.
