What is it? It's the basis for a lot of what we do. At its heart is a quantitative model that allows us to precisely identify and target tonal response. Using this model, we have studied the pickup design and tonal response space and arrived at a constantly expanding library of coil winding configurations and (most importantly) novel and exotic pole piece materials that enable us to predictably dial in tone just about wherever we want. Here's an example. This plot represents a stylized presentation of our tone space, but it does quantitatively capture the measures that define the tone and output of these pickups. Of course, there is a bit more going on than we can capture in this simplified two-dimensional framework, but hopefully this kind of approach will give our users the ability to navigate the space and make more rational tonal decisions. Look for lots more on this in the coming months.