The purchase is a little hassle but by following the instructions given on the site of URS by following a link sent after purchase, all is well. I found the process just sucks iLok (USB token synchronization), but hey it's a necessary evil I suppose.
I have not opened the manual, the interface is super traditional which has already seen a compressor, a hard or soft aileurs ...
2Ghz Macbook Pro with 2 GB of RAM. It turns nickel and CPU load is very reasonable in Logic Pro 7.2 (I turned ten carefree).
The sound is fantastic, that's why I wanted to leave a review. These plugs, great US known for (see U.S. forums on the subject), are very very very good and I find them really better than the Waves which are their main competitor. More "solid", more American in a way.
The sound of this plug is terrible ... I hesitated between a bundle and the bundle URS Waves SSL 4000 Collection, but frankly, after testing and purchase of the plug in particular, I am charmed by this brand, I will take the bundle of compressors with the EQ at that Macintel they will be compatible (in the coming weeks). I think the two are quite complementary.
Note that the URS 1980 Compressor compressor, the compressor channel strip comes from classic, won against the Waves SSL Bus Compressor 4000 a blind test here: http://gearslutz.com/board/showthread.php3?t=59093 and I really agree with the results, but also a matter of sensitivity, I like the sound of the solid plug.
I want to say that the long j''utilise Waves plugs, and I have the SSL 4000 Collection Native.