User Manual of Douk Audio VU9

Warm tips:

• Please make sure you have installed the tubes in correct direction, or else the tubes will not light up.
• AUX input is prior, VU9 will auto enter mic pickup mode if the AUX cable is disconnected.
• Without DC 5V power adapter, please prepare by yourself. 

• VU9 supports microphone and LINE (3.5mm AUX) inputs, both achieves wireless pickup and accurate display. It matches perfectly with most common audio device such as phone, computer, CD players, or speakers etc., very suitable for home/office/studio audio system to dynamically decorate your auditory feast.
• Simulated nixie tubes, VU9 adopts unique LED beads and glass tube to reproduce the sense of retro and mystery. Compared with nixie tubes, VU9 not only can acheive the same effects, but also with lower and safer working voltage (DC 5V), longer service life and much lower price.
• VU9 with full functions, not only support gain adjustment to achieve better visual effects, but also with 9 display modes, full color, moving speed and brightness adjustment, to match better with different audio device and environments.
• VU9 is powered by USB 5V, very convenient to use no matter when and where you are. With built-in power-off saving settings, no need to reset parameters even after restarting.

• Audio input: 3.5mm AUX / microphone pick up
• Power-off saving settings: support
• Brightness setting: support
• Rhythm sensitivity setting: support
• Color setting: support full-color
• Level meter display mode: two square root signal compression
• Working voltage: DC 5V ≥1A (Type-C)
• Dimensions(W*D*H): 85*85*175mm / 3.35*3.35*6.89in
• Net weight: 250g / 0.55lb
• Package weight: 500g / 1.10lb