Does it work in passive mode? w/o usb power just passtrhu 1 amp to 1 set of speakers?

The instructions are to use the meter in passive mode by using the amp-B and speaker-2 selections. This is what I use and it works perfectly. BTW, turning the meter on while listening does not introduce any “pop” or other noise.

What other model from douk provides switching 2 in and 2 out using rca plugs in lieu of banana plugs?

This is speaker selection device so it uses speaker inputs and outputs. Douk does make component switching devices that will have RCA inputs and outputs for audio components (not speakers). Not sure if they have 2 in, 2 out but there are many others that do. Search RCA audio switcher

does it have an internal mic and not used as a switch?

Hello. If you want internal mic, please choose this one https://www.amazon.com/gp/product/B08N12PSC8/ref=ask_ql_qh_dp_hza

Since it doesn't include the wall wart for the usb power cable, what amperage is necessary? 0.5 amps, 1 amp, 2 amps?

It is 1 Amp, it says it right under the USB jack. You can see it in the Amazon pictures.

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Douk Audio VU3 PRO Dual Analog VU Meter, 2-Way Amplifier Switch, Speaker Selector, Amp Audio Switcher Box 2-IN-2-OUT with DB Panel Display

Douk Audio VU3 PRO Dual Analog VU Meter, 2-Way Amplifier Switch, Speaker Selector, Amp Audio Switcher Box 2-IN-2-OUT with DB Panel Display

Product ID: 728127832

Details

Manufacturer
Douk Audio
Maximum Supply Voltage
5 Volts (DC)
Minimum Supply Voltage
5 Volts (DC)
Mounting Type
Freestanding
Voltage
5 Volts (DC)

🌈35 backlight colors, 5 brightness levels

🔊350W max power pass-through

🎛️20 gain & 30 sensitivity levels

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Description

🎧 Elevate your audio game with precision switching and iconic VU flair!

POWERHOUSE COMPATIBILITY - Handles up to 350W, supporting high-power digital & tube amps including Class A/B/D and TPA3255 models.
REMOTE CONTROLLED CONVENIENCE - Switch amps and speakers or adjust settings from your seat with included remote—perfect for focused listening sessions.
SEAMLESS 2 IN 2 OUT SWITCHING - Effortlessly toggle between 2 amps and 2 speaker pairs without unplugging cables, preserving your gear and vibe.
AUDIOPHILE GRADE BUILD QUALITY - Premium CNC aluminum chassis, pure copper jacks, and high-precision sensors ensure zero sound degradation.
IMMERSIVE VISUAL AUDIO FEEDBACK - Dual oversized VU meters with customizable backlighting create a stunning, vintage-inspired audio-visual centerpiece.

The Douk Audio VU3 PRO is a premium 2-IN-2-OUT amplifier and speaker switcher featuring dual large analog VU meters with 35 customizable backlight colors. Supporting up to 350W power transmission, it’s compatible with a wide range of high-power digital and tube amplifiers. Designed for audiophiles, it offers 20 gain and 30 sensitivity levels, remote control operation, and robust build quality with CNC aluminum and pure copper connectors to ensure pristine sound integrity.

Specifications

ASIN	B0DKSVQQ1V
Best Sellers Rank	#13,029 in Electronics ( See Top 100 in Electronics ) #55 in Audio Component Amplifiers
Brand	Douk Audio
Brand Name	Douk Audio
Circuit Type	2-way
Color	Black
Compatible Devices	Amplifier, Speaker
Connector Type	Banana Plug
Contact Material	Copper
Control Method	Remote, Touch
Control Type	Manual, Remote
Controller Type	Push Button
Customer Reviews	4.5 out of 5 stars 182 Reviews
Included Components	Amplifier Speaker Switch, Power Adapter, Remote Control, USB Cable
Manufacturer	Douk Audio
Material Type	Aluminum Alloy, Metal, Copper, Relays
Model	VU3 PRO
Mounting Type	Freestanding
Number of Items	1
Number of Positions	2
Operating Voltage	5 volts_of_direct_current
Operation Mode	2-IN-2-OUT
Part Number	VU3
Specification Met	FCC
Switch Type	Selector Switch
Terminal	Banana
Warranty Description	18-Month Limited Warranty
Wattage	350 watts

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MX$9493

Duties & taxes included

In stock

Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mexico.

Secure transaction

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