Positive Grid Bass Comp is a compressor pedal and is available under the Comp effect group and is inspired by the EBS Multicomp Bass compressor.
What EBS Sweden says about the EBS Multicomp pedal:The EBS MultiComp is the most popular EBS effects unit ever. Thousands of bass players, guitarists, and other musicians all over the world use it on their pedalboards.
The compressor hits the sweet spot between allowing for dynamic playing and creating a smooth consistency across the fretboard. It can also be used simply to push the gain and beef up the overall sound when desired.