• VU56 PRO is the original and upgraded music spectrum designed by Douk Audio. 56 bit in per channel, 112 bit stereo display, ultra-high resolution, easily to see the music level status in real time, every slight change of sound can be shown visually, with much kinds of display effects to dynamically decorate your listening enjoyment.
• Two display mode, PPM (peak programme meter, 0dB=1.5Vpp) and VU (volume unit, 0dB=0.775Vrms) mode, to satisfy different display requirements. The color of main bar and peak LED can be switched green or red freely, and it also supports 8 kinds of display effects to get much fun and higher playability.
• Unique and attractive design, besides MIC pick-up, VU56 PRO also can be used as an audio converter / splitter with its RCA and 3.5mm AUX inputs and outputs. All interfaces are gold-plated to ensure the tight connection, effectively reduce the sound transmission loss, provides both visual and auditory feast.
• With full function remote control, all settings can be easily adjusted from the distance and will be saved even shutdown. Powered by USB 5V, convenient to use at home desktop / office / studio etc., and the power is only for reading the sound signal to the display main board but nor affect the sound quality.
• Proper size with exquisite appearance, cool aluminum CNC black case, solid and durable. Multi-function settings, meet all usage requirements. 112-bit LED indicators and switchable color design look amazing and dynamic, can compatible with most common audio devices and perfectly match with a variety of usage scenarios.

• Audio input: 1 group*RCA / 1 group*3.5mm AUX / Microphone
• Audio output: 1 group*RCA / 1 group*3.5mm AUX
• Max. input level: 2.5Vrms
• Max.effective input level: 1.8Vrms (VU56 PRO will always be full display when exceed this)
• Monitoring frequency range: 20Hz-20KHz
• Input impedance: 10KΩ
• Brightness adjustment: supported (4 levels)
• Display color: green / red (switchable)
• Display effects: 8 kinds
• Remote control: supported
• Display length gain: 3 levels adjustable(-3dB,0dB,+3dB)
• Display mode: PPM mode (peak programme meter) / VU Mode (volume unit)
• Holding time of peak LED: adjustable
• Drop speed of main bar/peak LED: adjustable
• Working voltage: DC 5V (≥1A)
• Power interface: Micro USB
• Dimensions: 154*116*47mm / 6.06*4.57*1.85in
• Net weight: 400g / 0.88lb
• Package weight: 600g / 1.32lb

User Manual & Driver of Douk Audio VU56 PRO