The selector comes with a good package, the chassis is strong and heavy and the front switches have a good feeling. The display is very simple, the same for the little led indicators, but they works with no problems.
The female banana connectors on the back are ok, not big and strong but they accept the whole male banana. There are 2 big problems: first, the electronic board inside is good, with good traces, but the little red cables tha connects banana plugs to PCB are way too thin!! Second, the bigger problem: when you switch on the second output, the + and - connectors are inverted! So, if you don't test it with a multimeter, you reverse the polarity of the speakers. This is not acceptable. It's not a big problem when you know about it, but it shouldn't be this way. I was thinking about send back the items, but it's not worth it. I'll redo the cabling inside the switches (I've purchased 2 of these).