They say:

Another Black Cat legacy product, the N-Fuzz was originally made in limited numbers between 2001 and 2003, and was only available in the Asian market. After discussion with our Japanese distributor about reintroducing the N-Fuzz to the Asian market, we decided to further redesign the N-Fuzz circuit to use Japanese electronic components. This gave a new meaning to the name, which now stands for “Nippon Fuzz.”

In selecting transistors, we tried several different types before we found the perfect combination. We eventually decided on Toshiba 2SC1815 for Q1 and Panasonic 2SC1384 for Q2. Much experimentation was also needed to achieve the widest usable range for the Bias control. This allows the N-Fuzz to offer many different tones and timbres of fuzz, from an ultra compressed and gated “velcro” fuzz sound, to an open dynamic crunch.