Rupert Neve Designs Portico 5043 Compressor Open Box, from Neve

The 5043 Compressor/Limiter Duo is a new and powerful approach to dynamic processing! This new addition to the Portico range is designed with both tracking and mixing applications in mind.
The Portico 5043 embodies two independent Compressor-Limiters (Channels A and B) housed within a half rack, 1U module. They can be used independently or connected in sequence to provide two separate control slopes. When used independently, for example, as a stereo pair, linking the D.C. control circuits via a front panel Push-Button, enables the level of each unit, "A" and "B", to be held in a constant relationship. Rear panel TRS connections are provided to link multiple 5043s. This linking may also be extended to the former AMEK CIB and DMCL units.
When used in sequence, the Portico 5043 can be configured easily to provide dual slope compression and limiting as suggested in the graphs below.