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.

Looks cool, works great. The remote is kind of cheap and doesn’t respond the best but overall very nice unit.

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.

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.

I was going to get the FOSI Audio version of this, but when I started hearing about the VU meter problem, I waited to see what Aiyma or Douk would do. I'm glad I did, as the VU meters dance easily, even on a low-sensitive setting. The binding posts are good and the whole unit feels premium. I didn't notice any added noise to my chain (Schiit Loki + IFI Zen Phono stage + Emotiva TA-1), but maybe in a more expensive setup, it might add something. Switching between amps and speakers is easy and the remote is very good. The VUs can adjust colors (which you can do with the remote) from a pale yellow to red and green and you can adjust the brightness, too. All in all, a fun item that you can use just on it's own because of the very sensitive mic that makes the VUs go even if not hooked into your chain.

Cool device but the pictures vs reality are off. lighting is a bit meh. The color is not uniform as a lot of white light bleed from bottom center no matter what color you set.

For me, it was about adding a little bling to my stereo. It does work for that. The speaker switching is a bonus.

I purchased this device to replace an existing one, I use to switch between a Denon receiver I use for AV, and a Primaluna tube amp I use for 2 channel music. The box is well made, metal chassis, solid clicks when I switch between amps. VU meters are just eye candy, but brilliant. Love that you can change the color on try fly. Rear panel has good quality inputs. No degradation to sound that I can tell. One of the best $145 updates I’ve made.

Excelente manufactura y muy fácil de usar

Received the product yesterday. The setup was a breeze and I did it all by myself. I used banana plus for the connections. It is working as expected and no loss in signal. The VU meters are bright enough and working fine. The Denon front two speakers out and the Pioneer Amps speaker out are connected to this. Presently one pair of Polk speakers are added. Switching works perfectly fine. I tested with both Amps. I am happy with the product.

Es bueno pero esperaba algo mejor por el precio

Really useful for interchange