• Which selector switch is the BEST? Fosi LC30 vs the classic Douk VU3 One Little Bear!——Reviewed by @Forever Analog

• VU3 VU meter & audio switcher box is originally designed by Douk Audio:
  1. As a VU meter, with dual 60*35mm large meter, can dynamically decorate audio environment and provide incomparably visual effects when switching audio signals.
  2. As an audio switcher, easily to switch between two amplifiers and 2 pair of speakers, no need to plug in and out cables repeatedly to avoid wearing the contact point of the sockets.
  
• Powerful design and strong compatibility: all channels adopt fully isolation design, each channel's GND is independent without mutual interference. Supports all kinds of amplifier such as BTL / class A / class B / class D digital amplifier / tube amplifier etc.
• High-quality components to ensure VU3's best working performance:
  1. AC 250V 5A large current relay, easily to connect amplifiers and speakers with high power.
  2. Built-in large power load resistor with metal wire winding, each channel supports up to 300W power input and output.
  3. High-precision VU meter with peak LED display, and match perfectly with customized VU driver board.
  4. Fully isolation transformer to acquisite audio signal to avoid crosstalk from VU driver board, ensure clear and pure sound.
  5. Solid CNC full aluminium alloy case, large pure copper banana speaker jacks ensures minimum signal attenuation during transmission.
  
• Easy Use & Perfect Details: Powered by micro-USB 5V, with built-in protection load for speakers. With remote control, can quickly set the working status from distance. All settings can be saved after shutdown, more convenient to use.
• Proper size with exquisite appearance: cool black case, warm VU meter and clear indicators looks vintage and dynamic, can perfectly match with a variety of usage scenarios, very suitable for audiophiles who have more than one amplifiers or speakers.

• Audio input/output: 2 groups of banana female
• Working mode: 2-IN-1-OUT / 1-IN-2-OUT
• Amplifier type supported: all kinds of type (BTL /Class A /Class AB /Class B / Class D digital amp / tube amp etc.)
• Max. through power of each channel: 300W (in actual)
• Backlight brightness adjustment: 4-level adjustment (can be turn off)
• Amplifier no-load protection: support
• Remote control function: supprt
• Settings saved after shutdown: support
• Working voltage: DC 5V (above 1A)
• Power interface: Type-C
• Battery model of remote control: CR2025 3V (may not included)
• Diameter of VU meter: 60*35mm
• Dimensions(W*D*H): 178*118*68mm / 7.01*4.65*2.68in
• Package dimensions(W*D*H): 280*185*155mm / 11.02*7.28*6.10in
• Net weight: 980g / 2.16lb
• Package weight: 1.2kg / 2.65lb

User Manual of Douk Audio VU3

Warm tips：

• For safer and faster delivery, the remote control may not include batteries (CR2025 3V), please prepare it by yourself.
• Not connect VU3 to amplifiers whose actual output power is greater than 300W, or else VU meter may be damaged.
• When power VU3 off, Amplifier B channel and Speaker 2 channel will be auto selected and can input and output audio signal normally. And when power VU3 on again, it will auto switch to the channels that are set before.