Take a peek inside by removing the top cover and try to figure out which Version you have by matching what you see with the following descriptions. The serial numbers will give you a rough guide only. As there can be some overlap between production versions, serial numbers alone cannot be used to identify which Version you have: it is best to visually inspect the guts of your unit to really know which Version you have. However, as expected for a model that has been in production this long, there are some mechanical and electrical differences between the units, and we have broken them down into four basic groups.
The Manley Stereo Variable Mu® Limiter Compressor has been in production since 1994, and all builds of these over the years are very similar. IDENTIFYING THE DIFFERENT VERSIONS OF THE VARIABLE MU®
