The BC1 was designed to add glue to mixes in a transparent and musical manner, and owners of the Ltd version will still be able to achieve that.
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In addition, the new Grab setting offers a more aggressive and apparent compression behavior. This may be desirable on the drum bus or for a more snappy sounding mix.
THD and filter options
The BC1Ltd also has a THD switch, which adds a bit of crunch and tasty overdrive to the table. And in order to not have bass instruments having a too apparent impact on the mix, there are now three switchable high-pass filter options for the sidechain signal.
Attack time tweaks
New attack time settings have been added, to make the unit useful in even more situations.