AnalogX ACMProperties

With ACM Properties you can get a listing of all the installed ACM plugins, as well as the audio formats that they can input and output (and their respective bit depths, sample rates, etc).

You can use this program when you're having a problem using a plugin in another program, ACM Properties quickly checks to see if the format is correct.
ACM Properties works on all versions of Windows, from Window 95 to Windows 7 and everything inbetween including XP, Vista, Win2k, etc.