only if it works... the UI crashes randomly, presets are not saved/loaded correctly and sometimes it stops giving sound without any error messages. When you write to support, Mr "Synthogy Tech Support" keeps telling you that it must be a bug in your operating system or the way you are using it.
Using Windows 7 x64 here, without any issues with most of my other plugins.
PS. Even the link to their product website is broken in the KVR site. http://www.synthogy.com/products/americanconcertd.html