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

It does what I needed. I can A - B two sets of speakers (or two amps). And I can run both sets of speakers combined. That last feature is hard to find. The remote is handy for A - B comparing of speakers while sitting in the listening position. I like the banana plug / spade connectors. Solid and versatile. I have not noticed any degradation of sound quality when using this box. For $135 is was a good price. The meters are nice eye candy, but not all that acurate. You can change colors and brightness. Or turn them off completely if you wish. The unit does have to be powered on to pass the sound through you your speakers. I have a Furman power coditioner on my setup that I turn on before applying power to each hifi component. The VU3 pro is plugged into the Furman and it powers on when the Furman is switched on. So, that works fine for me. And the VU 3 pro remembers it's settings from the last power down. So, that's a good feature.

This was just what I needed. Using a tube amp and solid state amp in the same system, I'm able to switch between the two amps and use the same pre-amp, speakers and everything else is worth the price of admission. Added bonus I could always add another pair of speakers in the future if I decide I need them (doubtful). Well made, looks nice, VU meters (their accuracy which is highly debatable, but it looks cool) an added bonus and ability to change the backlighting is nice, but hardly a requirement. There is no discernable degradation of sound quality.

Great switching box. I can AB systems compare amps and speakers with ease. VU meters are cool. Love the remote. Doesn’t seem to color the sound.

This device does two completely separate things: 1. It is a 2x2 amplifier to speaker selector. If your amplifier doesn't have an A/B speaker switch, this will do the job (but it cannot output to both A+B at once). Less commonly, it will also switch from either of 2 amplifiers to either of the two speaker pairs as well (don't know what once would use that for). It can only handle ONE signal path at a time. 2. It has old-style VU meters with a choice of background colours. This is only for eye-candy for those who want to add a vintage look. There is no practical use for this at all (but that's what I bought it for!). I bought it for (2) and I guess it kind of does the job, though the needle is so fine that even though the meter is large and easily visible from a distance, the needle is not, so you don't really see much unless you're just a few feet away. If you only want it for eye candy, in theory you don't have to connect anything. It has a built-in microphone that will pick up the ambient sound and the meter will move with that. Unfortunately, the microphone sensitivity is low (being at the BACK of the unit doesn't help) so unless you're blasting the music, you're not going to get a satisfactory result (no real movement). So OK, you connect the device input in parallel to your amp but no, that doesn't work either since the meter will only move (according to the documentation--didn't try it) if the OUTPUT is connected to a speaker as well (why???)! So that's a pain since then I ALWAYS need to have this on since otherwise I get no sound (there is no default connection when the unit is powered off. In this mode the meter movement is fine, though at low "background-music" level volumes, it will still not move very much even at maximum gain. The gain setting works as expected. The sensitivity setting is weird. At the lowest end it increases the gain so the needle will move UP higher and more quickly, but it will move DOWN very slowly so the needle movement is sluggish and doesn't feel that it's following the music. At the highest end, it decreases the gain, but increases the responsiveness so the needle will bounce down as quickly as it bounces up. The middle position gives a more-or-less intuitive "feel" but it's not at all clear what this control is supposed to achieve. In short I'm not sure that it was worth the purchase and I think it's more trouble than it's worth to use it. It falls into the "neither here nor there" category for me. It is solidly built with a good-quality metal chassis, and the aesthetics make it look high-end (referring to the Pro model here). If you really need a 2x2 amp/speaker selector (not a switch since a 2x2 switch means you can have 2 signal paths simultaneously, which you cannot with this product), then this seems to be a good choice. As best I as I can tell, the selector is done via relays rather than via electronics, which is a good thing since you are not limiting the signal quality by passing through this unit. So I guess it gets good marks for that part, hence the 4 stars, otherwise it would be 3.

Better than the other swithces that I tested. Quality finish and functionality. This switch does not add any color and the loss of output is very minimal or I can say negligible. Very userful for every audiophile to compare between to amplifiers to evaluate performance of two differnt brands of speakers instantly. In my case I was comparing and evaluating my new Yamaha A-S801 amp with my vintage Denon PMA-720 using a pair of KEF Q350 and a pair of Klipch RP600 M-II. It is so convenient and handy to switch between amps and speaker pairs while not changing your listening position , using the remote. Also gives a good look to your rack with the UV meters. I will definitely recomend this.

I had a great experience with this seller. The condition,the quality and the appearance of my item was impeccable. The delivery was quick, and the packaging was sturdy with superb quality and appearance matching the item's description and images. The product met my expectations, and I believed it was worth the cost. I highly recommend purchasing from this seller.

pleasantly surprised. works great. Almost bought another brand but it got bad reviews because the VU meters didn't work good. These work great. You can adjust the gain and or the sensitivity, change the color and it dims too. very easy to hook up. but I had to buy a bunch of banana plugs. I only use one amp and 2 sets of speakers. I highly recommend it

Works as advertised but remote stopped working 8 months after purchase, vendor will replace for free but wants $10.00 to ship.

Excelente manufactura y muy fácil de usar

Es bueno pero esperaba algo mejor por el precio