It's my own design, not modeled after any compressor that I know of. I have a lot of experience working with rackmount studio compressors - LA-2A's, 1176's, Chandlers, API's - and I wanted something that I could use in the studio that gave me a different flavor. I actually prefer it to an 1176 on bass because the ratio control goes down to 1:1. I definitely designed it with lower ratios in mind, but it'll squash pretty hard depending on what value pot I use for the ratio control. Right now I have it set at like a 10:1 max. It's not really designed for limiting, more for envelope-shaping compression.