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 Dual Analog VU Meter, 2-Way Amplifier/Speaker Switch, Audio Switcher Box with DB Panel Display

Douk Audio VU3 Dual Analog VU Meter, 2-Way Amplifier/Speaker Switch, Audio Switcher Box with DB Panel Display

Product ID: 637825923

Details

Brand
Douk Audio
Colour
Basic
Manufacturer
Douk Audio
Number of items
1

📡Remote control + settings memory

🔊300W max power per channel

🎛️Dual 60x35mm vintage VU meters

Description

🎵 Elevate your audio game with vintage style and modern control!

SMART REMOTE CONTROL - Adjust settings and switch channels from across the room with ease
VINTAGE VISUAL VIBES - Dual large VU meters bring dynamic, eye-catching retro flair to your setup
SEAMLESS AUDIO SWITCHING - Effortlessly toggle between 2 amps & 2 speaker pairs without cable wear
BUILT TO PROTECT PERFORM - Independent isolated channels with speaker load protection for flawless sound
UNIVERSAL AMP COMPATIBILITY - Supports BTL, Class A/B/D, tube amps—future-proof your audio rig

The Douk Audio VU3 is a sleek dual analog VU meter and 2-way amplifier/speaker switcher designed for audiophiles managing multiple amps and speakers. It supports up to 300W per channel, features large vintage-style meters for dynamic visual feedback, and offers seamless switching via remote control with memory settings. Its fully isolated channels ensure no interference, compatible with all amplifier types including tube and digital. Compact yet stylish, it enhances any audio setup with both function and flair.

Specifications

ASIN	B096KLDMCV
Box Contents	VU3 Amplifier Speaker Switch
Brand Name	Douk Audio
Color	Basic
Customer Reviews	4.3 4.3 out of 5 stars (370)
Item Weight	980 Grams
Manufacturer	Douk Audio
Manufacturer Part Number	XX-VU3
Model Number	DOUK-VU3

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