TSOP elaborated two technologies for the purposes of virtual instrument projects. At the early stage of design process, we realized how important is to preserve all details of the original instrument untouched. Human ear is incredibly sensitive to barely measurable tonal coloration we wish to preserve in samples. To achieve that, we had to eliminate all unwanted influences of analog and digital signal paths. This led us to two solutions named Direct to Sample and Virtual Analog. The first one relates to the phase of preparation of a genuine device and the actual sampling, the second one is about assembling a complete virtual instrument from separate samples. Some issues might be applicable to your work, so we willingly share them.