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

Unit worked great out of the box. You need your own USB power adapter because none is provided. Pretty much any old USD power adapter you have lying around works. This device is beautiful eye candy for your stereo setup. Who doesn't like 2 lively VU meters dancing on the music? I love the dial where you can select the sensitivity of the meter, so that even at low volume your meters can be dancing wildly. Minor gripe is that no battery was included for the remote but luckily I had one lying around. I tried a CR2025 but it needs a CR2032 battery. Although the remote control is a smaller than credit card sized piece of cheap black plastic, it works great. There is no discernible impact on sound by putting this unit between your amplifier and your speakers. Perhaps a little bit more rolled off on the high frequencies but I might imagine that. This device is great for A/B testing of speakers and amplifiers. It is amazing how smoothly it switches between speakers and amps. I was totally expecting loud clicks and pauses in the music but it is completely smooth and pretty much unnoticeable. Quite amazing. Obviously you need (an) extra set(s) of speaker cables, depending on how many amps and speakers you want to connect. The unit is much smaller than you would expect from the pictures. Those pictures are doctored where the unit is enlarged and showed on top of regular sized 17" wide stereo equipment, looking like almost equal width. That's a nasty marketing ploy. Not cool! The actual unit is 7"x5"x3". If you scroll down deep enough into the small font area of the manufacturer's description they give you the actual measurements but the pictures are totally misleading. Nonetheless good build quality and everything works as advertised. It's a keeper!

Small footprint unit, about 7 inches wide, 4 inches deep and a little less than 3 inches tall including the feet. See the photos for the measurements. Banana plugs are best for rear connections. The spade connectors are difficult to tighten due to limited rear panel space and the inability to tighten the rear connectors securely enough to prevent loose connections with spade connectors. Setup is straight forward, it’s just a matter of running the wires for 2 sets of speakers (or amps) and making the connections. The remote is required to adjust the lighting on the VU meters. There is no On/OFF switch on the actual box, only on the remote itself. If you want On/Off capability on the box, Douk recommends that the user add a manual switch to the power cord. You can also plug and unplug the unit for on/off if you lose or damage the remote. I have been running this switch for months and I use it to A/B between a pair of Magico S1 and Zu Audio Soul 6 speakers. I know, it’s an unusual audio setup but with this Douk switch, I can really dial in my speakers based on the audio source. I cannot audibly detect any added noise or distortion from the Douk switch despite online reports of added distortion found during bench testing. From my experience, this switch works very well. It would be perfect with power on/off and VU meter light controls on the box but I still really like this unit. I have located a spare remote from the Douk website for $15 including shipping and it arrived faster than I expected. You will have to Google the Douk website and email them asking about a spare remote. I can’t include the URL/email here, Amazon won't let that occur. I suggested that Douk make a spare remote available on Amazon and they are considering that request. I found the folks at Douk very responsive and friendly! Otherwise, this was a great acquisition for my system, it greatly expands my audio system speaker capability and it’s well made. Hope that helps!

This adds a great visual dimension to listening to music, it’s worth that alone in my opinion. As far as the switching function, it works flawlessly, switching between 2 amps and 2 sets of stereo speakers by remote control or manually. As far as I can tell on my hi-fi setup (nothing super fancy but definitely not cheap either) this unit is dead transparent, except for the audible click from the relays within the unit itself, which sounds like powering up a surround sound receiver. I was reluctant to make the purchase because I thought this was a lower quality product but I wanted VU meters. I was pleasantly surprised when it arrived, feeling solidly built in a metal chassis with a decent finish. My two complaints are that the screen will not go into the deeper shades of blue manually, only in rotating color mode and although the VU meters are very pleasant to watch, I can’t seem to get any accuracy out of them. It is at a great price for what it does as a switcher and visual entertainer, it’s just not an accurate, blue colored VU meter.

Well, I set it all up and it works great! When I changed the speakers it was seamless switch. So cool! You can even turn all the speakers on at the same time. The amp switch work great as well. Fun to see of my friends try to determine which speakers are playing.

muy bueno para quien tiene dos pares de bocinas y quiere cambiar entre ellas sin pérdida de sonido. lo mismo con dos amplificadores, ideal para pruebas A-B

Excelente manufactura y muy fácil de usar

非常に使いやすくて重宝しています。

The Unit is overall good, looks good, there is a peak indicator LED which i felt was not required, the other draw back is the the swing indicatore needs to be adjusted every time you increase the volume. The cost of the unit is on the higher side could have been lower.

I love music. I also love colourful lights. This product adds a cute, compact retro vibe to your existing stereo. The VU meters have a pleasant glow, and the red needles move hypnotically as the signal strength changes from your stereo input. Hooking up the box was straightforward, you can use either the wire-on-post or banana plug system. It uses a low wattage USB power supply, which plugs in simply to your amp (if it has a bonus AC out) or to the wall. You have to supply your own USB wall brick, but hey -- we've got all drawers full of them. The VU box itself doesn't seem to make any difference to the sound quality, although purists may disagree. I'm a middle-aged dude with tinnitus so I'm not too picky. The only issue I have with the VU box is the sensitivity dial. Don't get me wrong, it works great. But you have to adjust the dial depending on the volume or sensitivity of your signal input -- or the needles don't dance around properly. Loud CD? Needles will slam. Quiet vinyl? Needles won't move. It would be nice if this had some kind of auto-attenuation feature for the input signal, but hey for less than $100 it's pretty cool.