Your 'suspicions' are correct. If you stack ANY preset, you will be adding additional harmonic content.
The solution ... use one 1 preset with the full content, and THEN, any additional presets [of the same library], use the 'CLEAN' versions [sometimes called SE]. In this way you will keep to the 'original' character of the component, yet retain complete flexibility in the individual needs [eq bands] you require.
I don't use any of the clean programs anywhere. I've read tons of posts where people use clean programs for cutting and "kernel'd" programs for boosting but that doesn't work for me. I don't know why but it's about kernels for me
i7 3770k :: Asus P8H77-V LE :: 16Gb DDR3 @1600MHz :: Geforce GT 520 :: OCZ-Vertex 128Gb :: WD Black Series 1Tb and Green Series 1Tb :: F*******e Liquid56 :: REAPER 64bit and StudioOne 64bit (both latest versions) :: Win 10 64bit
I thought the OP's question had to do with 'replicating' the original hardware's [harmonic signature] ???!!!!
A CORRECTION for my post above ... the Distortion FREE versions are called 'nd'.
from AlexB VBeQ manual:
The basic programs have "full" harmonic and dynamic contents as the original hardware, the "se" programs are CPU friendly with less and different harmonic contents but with full dynamic as the basic version. Nobody with “golden ears” will say they sound exactly like the basic version, but they still sound great and are very usable. The special “nd” programs are clean without harmonic contents. In this way you can build your virtual EQ using the programs to obtain the desired amount of color and harmonics.
CoolColJ wrote:Well AlexB did recommend one for cut, and 3 kernels for boost
Also a great way to use the clean programs and save on CPU/Memory. You can create channel presets that incorporate all bands of an EQ and it sounds glorious to me. So I've never worried about stacking and it's never deterred me from mixing with a positive outcome.