This product category consists of program (.n2p) and vector (.n2v) files for the commercial Nebula plugin from Acustica Audio. Unlike traditional convolution reverb impulse responses, the Nebula engine operates around Volterra Kernels, and has the ability to represent dynamic sampling methods and capturing of harmonic distortion characteristics, if programmed to do so. These libraries were originally built, tested, and intended for Nebula 3, version 1.3.504.

The OwnHammer Channel Colors capture the subtle but discernible impact of analog mic, instrument, and line level amplifier units in both their frequency response and dynamic saturation characteristics. Not all Nebula programs are created equal, as the configuration of the platform as well as how gear is sampled is left up to the program creator to be fine tuned. Different paths from the norm were tread in creating these libraries, and is why they are considered unique and highly sought after virtual preamp collection additions to this day.