At first I criticize the missed deadline (two days late) but it's not too serious, I was able to get help from a colleague for urgent work to finish. Regarding the device, I still have nothing plugged into it, I just turned on and it is quiet as advertised except the starting snoring like any transformer that is put on; but it lasts a short time, then quiet operation. I will give my opinion on its use after connecting a 600W amp to a PA system. CAUTION This unit is heavy and very big. Too bad the size and weight are not indicated on the product; l = 18cm, L = 21cm, H = 16cm, weight = it blithely exceed 5kg. ; my very precise electronic scale refuses any greater weight; it is still important if you think about using it in his living room because not easy to hide or place on a shelf or a base cabinet. Now I want to talk about the packaging; very well done, the transformer has not suffered because of the trip packed in a carton making three times the size of the transformer box, with paper around. BUT, because there is a but, I doubt that this unit is really new, as it has some scratches, fingerprints and a small pet not matter on top; not to mention weird stuff, like crumbs; believe someone has prevailed on a picnic. VERY CURIOUS for a device NINE said. That's why I let him run for a while before ATTEMPT to plug one of my devices. CAUTION: Another criticism, but this is my fault, I should notice it before: it is unfortunate that there is ONE OUT 110 V. If you take me as a transformer 1000 W is for the margin in order to connect two or three devices in total do not exceed 700 W. (I advise you to keep 30% margin compared to the power handling and announced on the transformer). There is plenty of room in my house for a second relay engaged on this case or it's to get us to buy a US or multi-outlet Canadian (not easy to find) and end up with even more cables . Well I going to get my amp and plug because the transformer on standby does not seem to be heated; it is already a good thing and it is still silent. I should not regret my purchase still despite the critical aesthetic order which I have put above. I hope that my analysis not entirely positive but objective, will not be censored. Forward.