1. Киришүү
The Douk Audio VU56PRO is an advanced MIC+LINE Stereo RGB LED Sound Level Meter, Audio Splitter, and Switcher. It provides a high-resolution visual representation of audio levels, offering both PPM (peak programme meter) and VU (volume unit) modes. This device is designed to enhance your audio experience with dynamic visual feedback and versatile connectivity options.
2. Негизги өзгөчөлүктөрү
- Жогорку чечим дисплей: 56 bits per channel, 112-bit stereo display for precise real-time audio level visualization.
- Кош дисплей режимдери: Supports PPM (0dB=1.5Vpp) and VU (0dB=0.775Vrms) modes for varied applications.
- Customizable Visuals: Switchable green/red main bar and peak LED colors, with 8 distinct display effects.
- Audio Converter/Splitter: Functions as an audio converter/splitter with RCA and 3.5mm AUX inputs and outputs.
- Алыстан башкаруу: Full-function remote for convenient adjustment of all settings, which are saved upon shutdown.
- Мыкты курулуш: Features a cool aluminum CNC black case for durability and an exquisite appearance.
- ийкемдүү күч: Powered by USB 5V, suitable for various environments.
3. Пакеттин мазмуну
Пакетиңизде бардык буюмдар бар экенин текшериңиз:
- 1x Douk Audio VU56PRO Sound Level Meter
- 1x Алыстан башкаруу
- 1x USB кабели
- 1x 3.5 мм AUX кабели
- 1x Колдонуучунун колдонмосу (бул документ)
4. Коопсуздук маалыматы
- Ensure the device is powered by a DC 5V (≥1A) USB power source.
- Аппаратты сууга же ашыкча нымдуулукка дуушар кылбаңыз.
- Avoid disassembling the unit, as this may void the warranty and cause damage.
- Аппаратты жогорку температурадан жана түз күндүн нурунан алыс кармаңыз.
- Use only the provided or recommended cables for connections.
5. Продукт бүтүп калдыview
Front Panel
The front panel features the stereo RGB LED display, showing audio levels for left (L) and right (R) channels. The display includes markings for various dB levels, including 0VU and +6dB.

Сүрөт 5.1: Алдыңкы view of the Douk Audio VU56PRO, showcasing the stereo RGB LED display.
Арткы панель
The rear panel houses all input and output connections, along with control switches. It includes RCA and 3.5mm AUX inputs/outputs, a microphone pick-up hole, mode switch, power switch, and a Micro USB power input.

Image 5.2: Detailed diagram of the VU56PRO rear panel, illustrating input/output ports and controls.
- LINE 1 IN/OUT (RCA): Stereo RCA input and output.
- LINE 2 IN/OUT (3.5mm AUX): Stereo 3.5mm AUX input and output.
- РЕЖИМ которуштуруу: Toggles between display effects, and a long press (3 seconds) powers the unit on/off.
- MIC/LINE которуу: Selects between microphone input mode and line input mode.
- Microphone Pick-up Hole: Integrated microphone for MIC input mode.
- USB IN: Micro USB port for 5V DC power supply.
Эскертүү: The inputs and outputs of LINE 1 and LINE 2 are connected in parallel. Only one set of inputs and outputs should be connected at a time for proper operation.
6. Орнотуу
- Кубат туташуу: Connect the provided USB cable to the 'USB IN' port on the rear panel and plug the other end into a DC 5V (≥1A) USB power adapter (not included) or a compatible USB port.
- Аудио киргизүү туташуу:
- Сап киргизүү: Connect your audio source (e.g., CD player, MP3 player, computer, phone) to either the RCA 'LINE 1 IN' or 3.5mm AUX 'LINE 2 IN' ports using the appropriate cable.
- Микрофон киргизүү: For ambient sound detection, ensure the 'MIC/LINE' switch is set to 'MIC'. No external audio cable is needed for this mode.
- Audio Output Connection (Optional): If using the VU56PRO as an audio splitter/switcher, connect your amplifier or active speakers to either the RCA 'LINE 1 OUT' or 3.5mm AUX 'LINE 2 OUT' ports.
- Күйгүзүү: Long press the 'MODE' switch for 3 seconds to power on the device. The LED display will illuminate.

Image 6.1: The VU56PRO seamlessly integrated into a desktop audio environment, demonstrating its visual appeal.
7. Иштөө нускамалары
7.1 Display Modes (PPM / VU)
The VU56PRO supports two primary display modes:
- PPM Mode (Peak Programme Meter): 0dB = 1.5Vpp. Recommended for general dynamic display and visual effects.
- VU Mode (Volume Unit): 0dB = 0.775Vrms. More suitable for professional audio level monitoring.
Switch between these modes using the remote control or the 'MODE' button on the device.

Image 7.1: Illustration of the two display modes, PPM and VU, showing how the VU56PRO adapts to different monitoring needs.
7.2 Дисплейди ыңгайлаштыруу
The VU56PRO offers extensive customization options for its LED display:
- Display Effects: Choose from 8 different display effects to personalize the visual experience.
- Дисплейдин түсү: The main bar and peak LED colors can be switched between green and red.
- Жарыктыкты жөндөө: Adjust the display brightness across 4 levels.
- Display Length Gain: Adjust the sensitivity of the display with 3 levels: -3dB, 0dB, +3dB.
- Peak LED Holding Time: Configure how long the peak LED remains illuminated.
- Drop Speed: Adjust the speed at which the main bar and peak LED fall.

Image 7.2: The VU56PRO demonstrating its capability to display 8 different effects and switchable colors, enhancing visual engagement.
7.3 Алыстан башкаруунун иштеши
All settings can be conveniently adjusted using the included remote control. Settings are automatically saved even after the device is powered off.

Image 7.3: The VU56PRO shown with its remote control, emphasizing ease of adjustment from a distance.
8. Техникалык тейлөө
- Тазалоо: Аппараттын сыртын тазалоо үчүн жумшак, кургак чүпүрөктү колдонуңуз. Суюк тазалагычтарды же абразивдүү материалдарды колдонбоңуз.
- Сактагыч: Узак мөөнөткө колдонулбаганда, аспапты күн тийбеген, салкын, кургак жерде сактаңыз.
- Вентиляция: Ашыкча ысып кетүүнүн алдын алуу үчүн түзмөктүн айланасында жетиштүү аба айланышын камсыз кылыңыз.
9. Кыйынчылыктарды
- Дисплей/кубат жок:
- Ensure the USB power cable is securely connected and the power source is active (DC 5V, ≥1A).
- Long press the 'MODE' switch for 3 seconds to power on the device.
- No Audio Level Display:
- Check if the audio input cables are correctly connected to 'LINE IN' ports.
- Verify that the audio source is playing and its volume is sufficient.
- Ensure the 'MIC/LINE' switch is set to 'LINE' for external audio sources or 'MIC' for ambient sound.
- Adjust the 'Display Length Gain' setting via the remote control.
- Incorrect Level Display:
- The maximum effective input level is 1.8Vrms. Exceeding this may result in a full display.
- Adjust the input level from your audio source or use the 'Display Length Gain' setting.
- Ensure the correct display mode (PPM or VU) is selected for your application.
- Алыстан башкаруу жооп бербейт:
- Пульттун батареясын текшерип, керек болсо алмаштырыңыз.
- Пульт менен аппараттын ортосунда эч кандай тоскоолдуктар жок экенин текшериңиз.
10. Техникалык шарттар
| Параметр | Нарк |
|---|---|
| Аудио киргизүү | 1x RCA / 1x 3.5mm AUX / Microphone |
| Аудио чыгаруу | 1x RCA / 1x 3.5mm AUX |
| Max. Киргизүү деңгээли | 2.5Vrms |
| Max. Effective Input Level | 1.8Vrms |
| Monitoring Frequency Range | 20Гц-20КГц |
| Киргизүү импедансы | 10KΩ |
| Жарыктыкты жөндөө | 4 levels supported |
| Display Color | Green / Red (switchable) |
| Display Effects | 8 түрү |
| Алыстан башкаруу | Колдоого алынган |
| Display Length Gain | 3 levels adjustable (-3dB, 0dB, +3dB) |
| Дисплей режими | PPM mode / VU Mode |
| Holding Time of Peak LED | Жөнгө салынуучу |
| Drop Speed of Main Bar/Peak LED | Жөнгө салынуучу |
| Working Voltage | DC 5V (≥1A) |
| Power Interface | Микро USB |
| Өлчөмдөр | 154 x 116 x 47mm / 6.06 x 4.57 x 1.85in |
| Таза Салмак | 400г / 0.88лб |
11. Кепилдик жана колдоо
Douk Audio products are designed for reliability and performance. For warranty information or technical support, please refer to the official Douk Audio webсайтына кириңиз же сатуучуңузга кайрылыңыз. Кепилдик боюнча дооматтар үчүн сатып алганыңызды тастыктаган документти сактап коюңуз.
Кошумча жардам алуу үчүн, баш багыңыз Amazon'догу Douk аудио дүкөнү.





